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Meionite

A valid IMA mineral species - grandfathered

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Photos of Meionite (229)Recorded Ages and Analyses Discuss Meionite

Meionite Gallery Search Photos of Meionite

Edit Meionite Add Synonym Edit CIF structures Clear Cache

Meionite

Gem Scapolite occurrence, Soamatasy, Ihosy District, Ihorombe, Madagascar

Meionite

San Vito Quarry, San Vito, Ercolano, Metropolitan City of Naples, Campania, Italy

Meionite

Bear Lake, Litchfield, Pontiac RCM, Outaouais, Québec, Canada

Meionite

Gem Scapolite occurrence, Soamatasy, Ihosy District, Ihorombe, Madagascar

Meionite

San Vito Quarry, San Vito, Ercolano, Metropolitan City of Naples, Campania, Italy

Meionite

Bear Lake, Litchfield, Pontiac RCM, Outaouais, Québec, Canada

Meionite

Gem Scapolite occurrence, Soamatasy, Ihosy District, Ihorombe, Madagascar

Meionite

San Vito Quarry, San Vito, Ercolano, Metropolitan City of Naples, Campania, Italy

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About MeioniteHide

Formula:

Ca₄Al₆Si₆O₂₄CO₃

Colour:

Colorless, white, grey, pink, violet, blue, yellow, orange-brown, brown

Lustre:

Vitreous, Resinous, Pearly

Hardness:

5 - 6

Specific Gravity:

2.74 - 2.78

Crystal System:

Tetragonal

Member of:

Scapolite Group

Name:

Named in 1801 by Rene Just Haüy from μειωυ Greek for less, in reference to the less acute pyramidal form as compared to vesuvianite.

Type Locality:

ⓘ Mount Somma, Metropolitan City of Naples, Campania, Italy

Scapolite (Marialite-Meionite Series).

Visit gemdat.org for gemological information about Meionite.

Unique IdentifiersHide

Mindat ID:

2627

Long-form identifier:

mindat:1:1:2627:3

Similar NamesHide

Maenite	A rock subtype
Mayenita	A synonym of Chlormayenite
Melonite	A valid IMA mineral species - grandfathered	NiTe₂
Monite	A synonym of Hydroxylapatite
Möhnite	A valid IMA mineral species	(NH₄)K₂Na(SO₄)₂

IMA Classification of MeioniteHide

IMA status:

Approved, 'Grandfathered' (first described prior to 1959)

IMA Formula:

Ca₄Al₆Si₆O₂₄(CO₃)

Classification of MeioniteHide

Strunz-mindat (2026):

9.FB.15

9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H₂O
B : Tektosilicates with additional anions

Hey's CIM Ref.:

17.4.6

17 : Silicates Containing other Anions
4 : Silicates with carbonates

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

Symbol	Source	Reference for Standard
Me	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
Mei	Siivolam & Schmid (2007)	Siivolam, J. and Schmid, R. (2007) Recommendations by the IUGS Subcommission on the Systematics of Metamorphic Rocks: List of mineral abbreviations. Web-version 01.02.07. IUGS Commission on the Systematics in Petrology. download
Me	Whitney & Evans (2010)	Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185–187 doi:10.2138/am.2010.3371

Physical Properties of MeioniteHide

Lustre:

Vitreous, Resinous, Pearly

Transparency:

Transparent, Opaque

Colour:

Colorless, white, grey, pink, violet, blue, yellow, orange-brown, brown

Streak:

White

Hardness:

5 - 6 on Mohs scale

Tenacity:

Brittle

Cleavage:

Distinct/Good
Distinct on {100}{110}

Fracture:

Irregular/Uneven, Conchoidal

Density:

2.74 - 2.78 g/cm³ (Measured) 2.86 g/cm³ (Calculated)

Optical Data of MeioniteHide

Type:

Uniaxial (-)

RI values:

n_ω = 1.59 - 1.6 n_ε = 1.556 - 1.562

Max. Birefringence:

δ = 0.034 - 0.038
Based on recorded range of RI values above.

Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.

Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.

Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.

Thickness: 30 µm Order divisions

Rotation:

Surface Relief:

Moderate (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).

This shows the grain boundary and Becke line effect under plane-polarised light, based on the contrast between this mineral's average refractive index and the mounting medium. It does not take into account mineral colouration.

Focus:

In focus

Interference Figure:

This shows the idealized uniaxial interference figure - the conoscopic (convergent-light, Bertrand-lens-in) view, for a grain cut with the optic axis centred and vertical. The coloured rings are isochromatics, computed with the same physics as the Michel-Lévy bar above; the dark cross is the isogyre.

For a genuinely uniaxial mineral viewed this way, that cross stays perfectly stationary if you rotate the stage - unlike a biaxial mineral, where it splits apart on rotation. That invariance is itself the standard diagnostic test for telling uniaxial and biaxial minerals apart at the microscope.

Thickness: 30 µm

Chemistry of MeioniteHide

Mindat Formula:

Ca₄Al₆Si₆O₂₄CO₃

Element Weights:

Element	% weight
O	46.216 %
Si	18.028 %
Al	17.320 %
Ca	17.151 %
C	1.285 %

Calculated from ideal end-member formula.

Elements listed:

Al, C, Ca, O, Si - search for minerals with similar chemistry

Common Impurities:

Mg,Na,K,Cl,H₂O,S

Chemical AnalysisHide

Oxide wt%:

	1	2	3
SiO₂	44.05 %	50.14 %	47.17 %
TiO₂	0.01 %	0.00 %	0.03 %
Al₂O₃	28.67 %	24.57 %	26.29 %
Fe₂O₃	0.08 %	0.03 %	0.15 %
MnO	0.01 %	0.00 %	0.01 %
MgO	0.07 %	0.06 %	1.00 %
CaO	18.55 %	12.56 %	14.31 %
Na₂O	2.55 %	5.70 %	3.82 %
K₂O	0.24 %	0.93 %	1.01 %
P₂O₅		0.01 %
H₂O+	0.26 %	0.07 %	0.93 %
H₂O-	0.13 %	0.22 %	0.50 %
CO₂	3.2 %	3.04 %	2.66 %
SrO	0.19 %	0.25 %
BaO
SO₃	1.63 %	1.16 %	1.42 %
Cl	0.03 %	1.52 %	0.56 %
F	0.00 %	0.00 %	0.04 %
Loss-O=Cl+F	-0.01 %	-0.34 %	-0.14 %
Total:	99.66 %	99.92 %	99.76 %

Empirical formulas:

Sample ID	Empirical Formula
1	(Ca_2.95Na_0.74K_0.05)_3.74Al_5.02Si_6.55)O₂₄[Cl_0.01(CO₃)_0.66(SO₄)_0.16]_0.83 corresponding to Mar33.8Me66.2
2	(Na_1.62Ca_1.98K_0.17)_3.82Al_4.25Si_7.36)O₂₄[Cl_0.33(CO₃)_0.63(SO₄)_0.13]_1.00 corresponding to Mar47.4Me52.6
3	(Ca_2.27Na_1.10K_0.19Mg_0.22)_3.78Al_4.59Si_6.98)O₂₄[Cl_0.11(CO₃)_0.53(SO₄)_0.14F_0.01]_0.79 corresponding to Mar40.7Me59.3

Sample references:

ID	Locality	Reference	Notes
1	Slyudyanka, Slyudyansky District, Irkutsk Oblast, Russia	Haughton, D. R. (1971) Plagioclase-scapolite equilibrium. The Canadian Mineralogist, 10 (5). p.854-870.	Wet chemical analysis of single meionite crystal with pyroxene inclusions
2	Otter Lake, Pontiac RCM, Outaouais, Québec, Canada	Haughton, D. R. (1971) Plagioclase-scapolite equilibrium. The Canadian Mineralogist, 10 (5). p.854-870.	Wet chemical analysis of meionite associated with augite, phlogopite and calcite. The specimen is labelled "Huddersfield township"
3	" "	Haughton, D. R. (1971) Plagioclase-scapolite equilibrium. The Canadian Mineralogist, 10 (5). p.854-870.	Wet chemical analysis of meionite associated with calcite, amphibole and diopside. Specimen is labelled "Huddersfield township"

Crystallography of MeioniteHide

Crystal System:

Tetragonal

Class (H-M):

4/m - Dipyramidal

Space Group:

I4/m

Cell Parameters:

a = 12.179(1) Å, c = 7.571(1) Å

Ratio:

a:c = 1 : 0.622

Unit Cell V:

1,122.99 Å³ (Calculated from Unit Cell)

Morphology:

Prismatic, granular, massive.

Comment:

On synthetic material. Teertstra & Sherriff (1996) give a = 12.20(1) and c = 7.556(5) Å for end-member meionite.

Crystal StructureHide

Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4

View
CIF File Best | x | y | z | a | b | c

Rotation
Stop | Start

Labels
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Year	Locality	Temp (K)
0006213	Meionite	Antao S M, Hassan I, Wang J, Lee P L, Toby B H (2008) State-of-the-art high-resolution powder x-ray diffraction (HRPXRD) illustrated with Rietveld structure refinement of quartz, sodalite, tremolite, and meionite The Canadian Mineralogist 46 1501-1509	2008	Slyudyanka, Siberia, Russia	293
0015648	Meionite	Lin S B, Burley B J (1974) The crystal structure of an intermediate scapolite - wernerite Tschermaks Mineralogische und Petrographische Mitteilungen 21 196-215	1974	Tsarasaotra, Madagascar	293
0004640	Meionite	Antao S M, Hassan I (2008) Unusual Al-Si ordering in calcic scapolite, Me79.6, with increasing temperature American Mineralogist 93 1470-1477	2008		298
0004644	Meionite	Antao S M, Hassan I (2008) Unusual Al-Si ordering in calcic scapolite, Me79.6, with increasing temperature American Mineralogist 93 1470-1477	2008		293
0004641	Meionite	Antao S M, Hassan I (2008) Unusual Al-Si ordering in calcic scapolite, Me79.6, with increasing temperature American Mineralogist 93 1470-1477	2008		299
0004645	Meionite	Antao S M, Hassan I (2008) Unusual Al-Si ordering in calcic scapolite, Me79.6, with increasing temperature American Mineralogist 93 1470-1477	2008		396
0004643	Meionite	Antao S M, Hassan I (2008) Unusual Al-Si ordering in calcic scapolite, Me79.6, with increasing temperature American Mineralogist 93 1470-1477	2008		196
0004642	Meionite	Antao S M, Hassan I (2008) Unusual Al-Si ordering in calcic scapolite, Me79.6, with increasing temperature American Mineralogist 93 1470-1477	2008		101
0004646	Meionite	Antao S M, Hassan I (2008) Unusual Al-Si ordering in calcic scapolite, Me79.6, with increasing temperature American Mineralogist 93 1470-1477	2008		494
0004647	Meionite	Antao S M, Hassan I (2008) Unusual Al-Si ordering in calcic scapolite, Me79.6, with increasing temperature American Mineralogist 93 1470-1477	2008		594
0004648	Meionite	Antao S M, Hassan I (2008) Unusual Al-Si ordering in calcic scapolite, Me79.6, with increasing temperature American Mineralogist 93 1470-1477	2008		694
0004649	Meionite	Antao S M, Hassan I (2008) Unusual Al-Si ordering in calcic scapolite, Me79.6, with increasing temperature American Mineralogist 93 1470-1477	2008		793
0004650	Meionite	Antao S M, Hassan I (2008) Unusual Al-Si ordering in calcic scapolite, Me79.6, with increasing temperature American Mineralogist 93 1470-1477	2008		900

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Meionite'
loop_
_publ_author_name
'Antao S M'
'Hassan I'
'Wang J'
'Lee P L'
'Toby B H'
_journal_name_full 'The Canadian Mineralogist'
_journal_volume 46 
_journal_year 2008
_journal_page_first 1501
_journal_page_last 1509
_publ_section_title
;
 State-of-the-art high-resolution powder x-ray diffraction (HRPXRD) illustrated
 with Rietveld structure refinement of quartz, sodalite, tremolite, and meionite
;
_database_code_amcsd 0006213
_chemical_compound_source 'Slyudyanka, Siberia, Russia'
_chemical_formula_sum '(Ca3.248 Na.752) (Si6.84 Al5.16) O26.948 C.668 S.235'
_cell_length_a 12.16559
_cell_length_b 12.16559
_cell_length_c 7.57446
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 1121.032
_exptl_crystal_density_diffrn      2.742
_symmetry_space_group_name_H-M 'I 4/m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  'y,-x,-z'
  '1/2+y,1/2-x,1/2-z'
  '-y,x,z'
  '1/2-y,1/2+x,1/2+z'
  'x,y,-z'
  '1/2+x,1/2+y,1/2-z'
  '-x,-y,z'
  '1/2-x,1/2-y,1/2+z'
  '-y,x,-z'
  '1/2-y,1/2+x,1/2-z'
  'y,-x,z'
  '1/2+y,1/2-x,1/2+z'
  '-x,-y,-z'
  '1/2-x,1/2-y,1/2-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Ca   0.35870   0.28284   0.00000   0.81200   0.02370
Na   0.35870   0.28284   0.00000   0.18800   0.02370
Si1   0.16039   0.09216   0.00000   0.57000   0.01170
Al1   0.16039   0.09216   0.00000   0.43000   0.01170
Si2   0.16035   0.41298   0.20649   0.57000   0.01310
Al2   0.16035   0.41298   0.20649   0.43000   0.01310
O1   0.04120   0.15180   0.00000   1.00000   0.01620
O2   0.18610   0.37350   0.00000   1.00000   0.02110
O3   0.45120   0.14930   0.20630   1.00000   0.02300
O4   0.26620   0.36730   0.67450   1.00000   0.02280
O6   0.60060   0.51520   0.00000   0.50100   0.07200
O5   0.39310   0.48010   0.09990   0.11800   0.01600
C   0.50000   0.50000   0.00000   0.66800   0.01880
S   0.50000   0.50000   0.00000   0.23500   0.01880
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Ca 0.01540 0.02100 0.03460 0.00790 0.00000 0.00000
Na 0.02100 0.02100 0.03460 0.00790 0.00000 0.00000
Si1 0.01320 0.00960 -0.00010 0.00000 0.00000 0.00000
Al1 0.01320 0.00960 -0.00010 0.00000 0.00000 0.00000
Si2 0.01010 0.01530 0.01390 -0.00280 -0.00020 -0.00090
Al2 0.01010 0.01530 0.01390 -0.00280 -0.00020 -0.00090
O1 0.01900 0.00800 0.02100 0.01000 0.00000 0.00000
O2 0.02300 0.01900 0.02100 0.00400 0.00000 0.00000
O3 0.03500 0.02200 0.01200 0.00500 0.00800 0.00110
O4 0.02600 0.01260 0.03000 0.00380 0.00940 -0.00060
O6 0.08900 0.10600 0.02200 -0.02700 0.00000 0.00000
C 0.02400 0.02400 0.00800 0.00000 0.00000 0.00000
S 0.02400 0.02400 0.00800 0.00000 0.00000 0.00000

X-Ray Powder DiffractionHide

Loading XRD data...

2θ (degrees) d-spacing (Å)

Data courtesy of RRUFF project at University of Arizona, used with permission.

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 2: Planetesimal differentiation and alteration	4.566-4.550
6 : Secondary asteroid phases	4.566-4.560
Stage 3a: Earth’s earliest Hadean crust	>4.50
9 : Lava/xenolith minerals (hornfels, sanidinite facies)
10 : Basalt-hosted zeolite minerals
Stage 3b: Earth’s earliest hydrosphere	>4.45
16 : Low-𝑇 aqueous alteration of Hadean subaerial lithologies (see also #23)
Near-surface Processes
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)
25 : Evaporites (prebiotic)
High-𝑇 alteration and/or metamorphism
31 : Thermally altered carbonate, phosphate, and iron formations
Stage 4b: Highly evolved igneous rocks	>3.0
34 : Complex granite pegmatites
Stage 5: Initiation of plate tectonics	<3.5-2.5
40 : Regional metamorphism (greenschist, amphibolite, granulite facies)

Geological Setting:

Metamorphosed rock.

Type Occurrence of MeioniteHide

Type Locality:

ⓘ Mount Somma, Metropolitan City of Naples, Campania, Italy

Synonyms of MeioniteHide

Meyonite

Other Language Names for MeioniteHide

Dutch:Meioniet

German:Meionit
Mejonit
Meyonit
Nuttalit

Russian:Мейонит

Simplified Chinese:钙柱石

Spanish:Meionita
Meyonita
Nuttalita

Varieties of MeioniteHide

Algerite	Square unterminated prisms to several cm, rarely shows the normal pyramid. Varies from fresh to an altered meionite partly replaced by muscovite and possibly minor vesuvianite.
Kembleite	Slender pale yellow to brown elongated square prismatic crystals, often intergrown with fine-grained phlogopite.
Nuttallite	gray with slight tint of purple or blue, occasional slight chatoyancy.

Relationship of Meionite to other SpeciesHide

Member of:

Scapolite Group

Other Members of Scapolite Group:

Marialite	Na₄Al₃Si₉O₂₄Cl	Tet. 4/m : I4/m
'Scapolite'	This term generally refers to just the marialite-meionite series, not the full scapolite group, ...	Tet.
Silvialite	(Ca,Na)₄(Al₆Si₆O₂₄)(SO₄,CO₃)	Tet. 4/m : I4/m

Common AssociatesHide

Associations Based on Photo Data:

55 photos of Meionite associated with Calcite	CaCO₃
51 photos of Meionite associated with Diopside	CaMgSi₂O₆
31 photos of Meionite associated with Titanite	CaTiO(SiO₄)
16 photos of Meionite associated with Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
13 photos of Meionite associated with Graphite	C
12 photos of Meionite associated with Quartz	SiO₂
12 photos of Meionite associated with Marialite	Na₄Al₃Si₉O₂₄Cl
11 photos of Meionite associated with Spinel	MgAl₂O₄
10 photos of Meionite associated with Vesuvianite	Ca₁₉Fe³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉
10 photos of Meionite associated with Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂

Related Minerals - Strunz-mindat Grouping Hide

9.FB.	Perchukite-(Y)	PbYAsSi₂O₈	Mon. 2/m : B2/b
9.FB.	Åsgruvanite-(Ce)	Ce₁₆Ca₅Al(SiO₄)₆(AsO₃)₈(CO₃)₂Cl₄F₃(OH)₂	Trig. 3m(32/m) : P3m1
9.FB.	Steudelite	Na₃(K₁₇Ca₇)Ca₄(Al₂₄Si₂₄O₉₆)(SO₃)₆F₆ · 4H₂O	Hex. 6m2 : P62c
9.FB.	Wenlanzhangite-(Y)	Y₂V³⁺₂V⁴⁺₂(SiO₄)₂O₄(OH)₄	Tric. 1 : P1
9.FB.	Slyudyankaite	Na₂₈Ca₄(Si₂₄Al₂₄O₉₆)(SO₄)₆(S₆)_1/3(CO₂) · 2H₂O	Tric. 1 : P1
9.FB.	Bolotinaite	(Na₇◻)(Al₆Si₆O₂₄)F · 4H₂O	Iso. 43m : I43m
9.FB.	Sapozhnikovite	Na₈(Al₆Si₆O₂₄)(HS)₂	Iso. 43m : P43n
9.FB.	Betzite	Na₆Ca₂(Al₆Si₆O₂₄)Cl₄	Hex. 6 : P6₃
9.FB.05	Quadridavyne	(Na,K)₆Ca₂(Al₆Si₆O₂₄)Cl₄	Hex. 6/m : P6₃/m
9.FB.05	Sulfhydrylbystrite	Na₅K₂Ca[Al₆Si₆O₂₄](S₅)₂(SH)	Trig. 3m : P31c
9.FB.05	Marinellite	(Na,K)₄₂Ca₆(Al₆Si₆O₂₄)₆(SO₄)₈Cl₂ · 3H₂O	Trig. 3m : P31c
9.FB.05	Afghanite	(Na,K)₂₂Ca₁₀(Si₂₄Al₂₄O₉₆)(SO₄)₆Cl₆	Trig. 3m : P31c
9.FB.05	Bystrite	(Na,K)₇Ca(Al₆Si₆O₂₄)(S₅)Cl	Trig. 3m : P31c
9.FB.05	Franzinite	(Na,K)₆Ca₂(Al₆Si₆O₂₄)(SO₄)₂ · 0.5H₂O	Hex.
9.FB.05	Kyanoxalite	Na₇(Al_6-xSi_6+xO₂₄)(C₂O₄)_0.5+x · 5H₂O (0 < x < 0.5)	Hex. 6 : P6₃
9.FB.05	Vishnevite	(Na,K)₈(Al₆Si₆O₂₄)(SO₄,CO₃) · 2H₂O	Hex. 6 : P6₃
9.FB.05	Farneseite	(Na,Ca,K)₅₆(Al₆Si₆O₂₄)₇(SO₄)₁₂ · 6H₂O	Hex. 6/m : P6₃/m
9.FB.05	Alloriite	(Na,Ca,K)₂₆Ca₄(Al₆Si₆O₂₄)₄(SO₄)₆Cl₆	Trig. 3m : P31c
9.FB.05	Liottite	(Na,K)₁₆Ca₈(Al₆Si₆O₂₄)₃(SO₄)₅Cl₄	Hex. 6 : P6
9.FB.05	Depmeierite	Na₈(Al₆Si₆O₂₄)(PO₄,CO₃)_1-x · 3H₂O (x<0.5)	Hex. 6 : P6₃
9.FB.05	Biachellaite	(Na,Ca,K)₈(Al₆Si₆O₂₄)(SO₄)₂(OH)_0.5 · H₂O	Trig. 3 : P3
9.FB.05	Cancrinite	(Na,Ca,◻)₈(Al₆Si₆O₂₄)(CO₃,SO₄)₂ · 2H₂O	Hex. 6 : P6₃
9.FB.05	Cancrisilite	Na₇(Al₅Si₇O₂₄)(CO₃) · 3H₂O	Hex. 6mm : P6₃mc
9.FB.05	Fantappièite	[Na_82.5Ca₃₃K_16.5](Si₉₉Al₉₉O₃₉₆)(SO₄)₃₃ · 4H₂O	Trig. 3 : R3
9.FB.05	Carbobystrite	Na₈(Al₆Si₆O₂₄)(CO₃) · 3.5H₂O	Trig. 3m : P31c
9.FB.05	Microsommite	Na₄K₂Ca₂(Al₆Si₆O₂₄)(SO₄)Cl₂	Hex. 622 : P6₃22
9.FB.05	Pitiglianoite	Na₆K₂(Al₆Si₆O₂₄)(SO₄) · 2H₂O	Hex. 6 : P6₃
9.FB.05	Tounkite	(Na,Ca,K)₈(Si₆Al₆)O₂₄(SO₄)₂Cl · 0.5H₂O	Hex. 622 : P6₂22
9.FB.05	Balliranoite	(Na,K)₆Ca₂(Si₆Al₆O₂₄)Cl₂(CO₃)	Hex. 6 : P6₃
9.FB.05	Giuseppettite	(Na,K,Ca)_7-8(Al₆Si₆O₂₄)(SO₄,Cl)_1-2	Trig. 3m : P31c
9.FB.05	Sacrofanite	(Na₆₁K₁₉Ca₃₂)(Si₈₄Al₈₄O₃₃₆)(SO₄)₂₆Cl₂F₆ · 2H₂O	Hex.
9.FB.05	Kircherite	Na₅Ca₂K(Al₆Si₆O₂₄)(SO₄)₂ · 0.33H₂O	Trig. 32 : R32
9.FB.05	Hydroxycancrinite	Na₈(Al₆Si₆O₂₄)(OH)₂ · 2H₂O	Hex. 6 : P6₃
9.FB.05	Davyne	(Na,K)₆Ca₂(Al₆Si₆O₂₄)(Cl₂,SO₄)₂	Hex. 6/m : P6₃/m
9.FB.10	Haüyne	Na₃Ca(Si₃Al₃)O₁₂(SO₄)	Iso. 43m : P43n
9.FB.10	Lazurite	Na₇Ca(Al₆Si₆O₂₄)(SO₄)(S₃) · H₂O	Iso. 43m : P43n
9.FB.10	Danalite	Be₃Fe²⁺₄(SiO₄)₃S	Iso. 43m : P43n
9.FB.10	Helvine	Be₃Mn²⁺₄(SiO₄)₃S	Iso. 43m : P43n
9.FB.10	Kamaishilite	Ca₂(Al₂SiO₆)(OH)₂	Tet.
9.FB.10	Sodalite	Na₄(Si₃Al₃)O₁₂Cl	Iso. 43m : P43n
9.FB.10	Nosean	Na₈(Al₆Si₆O₂₄)(SO₄) · H₂O	Iso. 43m : P43n
9.FB.10	Genthelvite	Be₃Zn₄(SiO₄)₃S	Iso. 43m : P43n
9.FB.10	Bicchulite	Ca₂(Al₂SiO₆)(OH)₂	Iso. 43m : I43m
9.FB.10	Tsaregorodtsevite	(N(CH₃)₄)(AlSi₅O₁₂)	Orth. 222 : I222
9.FB.10	Vladimirivanovite	Na₆Ca₂(Al₆Si₆O₂₄)(SO₄,S₃,S₂,Cl)₂ · H₂O	Orth. mmm(2/m2/m2/m)
9.FB.10	Tugtupite	(BeAlSi)Na₄(SiO₄)₃Cl	Tet. 4 : I4
9.FB.15	Marialite	Na₄Al₃Si₉O₂₄Cl	Tet. 4/m : I4/m
9.FB.15	Silvialite	(Ca,Na)₄(Al₆Si₆O₂₄)(SO₄,CO₃)	Tet. 4/m : I4/m

Fluorescence of MeioniteHide

In UV light:

Commonly orange to bright yellow to red under SW and LW

Other InformationHide

Health Risks:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Meionite in petrologyHide

An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.

Metamorphic rock
- Cinnabrite

Internet Links for MeioniteHide

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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

Mineral Dealers:

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References for MeioniteHide

Reference List:

Haberlandt, H. and Köhler, A. (1934/1935): Fluoreszenzanalyse von Skapolithen. Chemie der Erde 9, 139-144.

Haberlandt, H. (1949): Neue Luminiszenzuntersuchungen an Fluoriten und anderen Mineralien IV. Sitz.-Ber. österr. Akad. Wiss., math.-naturwiss. Kl. I, 158, 609-646.

Scacchi, A., (1851): Notiz über den Sommit (Nephelin), Mizzonit und Mejonit, Annalen der Physik und Chemie, Erg. Bd. III, 478-479, J.C. Poggendorff, Leipzig

C., O. Ingamells; J., Gittins (1967) The stoichiometry of scapolite. The Canadian Mineralogist, 9 (2). p.214-236.

Ulbrich, H. H. (1973) Structural refinement of the Monte Somma scapolite, a 93% meionite. Schweizerische mineralogische und petrographische Mitteilungen, 53. 385-393 doi:10.5169/SEALS-41391

American Mineralogist (1982): 67: 1229-1241.

Oterdoom, W. Heiko, Wenk, Hans-Rudolf (1983) Ordering and composition of scapolite: Field observations and structural interpretations. Contributions to Mineralogy and Petrology, 83 (3) 330-341 doi:10.1007/bf00371201

Belokoneva, E.L., Sokolova, N.V., Urusov, V.S. (1993) Scapolite: crystal structures of marialite (Ma11) and meiorite (Me88) with space groups as functions of composition. Kristallografiya: 38(1): 52-57 (in Russian).

Teertstra, David K., Sherriff, Barbara L. (1996) Scapolite cell-parameter trends along the solid-solution series. American Mineralogist, 81 (1) 169-180 doi:10.2138/am-1996-1-221

(2001) Meionite. Handbook of Mineralogy. Mineralogical Society of America

Seto, Yusuke; Shimobayashi, Norimasa; Miyake, Akira; Kitamura, Masao (2004) Composition and I4/m-P4₂/n phase transition in scapolite solid solutions. American Mineralogist, 89 (2-3). 257-265 doi:10.2138/am-2004-2-301

Sokolova, E., Hawthorne, F. C. (2008) The Crystal Chemistry of the Scapolite-Group Minerals. i. Crystal Structure and Long-Range Order. The Canadian Mineralogist, 46 (6) 1527-1554 doi:10.3749/canmin.46.6.1527

(2011) The structures of marialite (Me6) and meionite (Me93) in space groups P42/n and I4/m, and the absence of phase transitions in the scapolite series. Powder Diffraction, 26 (2) 119-125 doi:10.1154/1.3582802

Kostov-Kytin, Vladislav; Kadiyski, Milen; Nikolova, Rositsa (2024) Further on the Choice of Space Group for Scapolite Group Members and Genetic Considerations about the Si-Al Ordering in Their Framework Construction. Minerals, 14 (6). 556 doi:10.3390/min14060556

Localities for MeioniteHide

Showing 232 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the

symbol to view information about a locality. The

symbol next to localities in the list can be used to jump to that position on the map.

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Locality ListHide

- This locality has map coordinates listed.

- This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality.

- Good crystals or important locality for species.

- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). ~~Struck out~~ - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.


Afghanistan
Badakhshan Kuran wa Munjan District Sar-e-Sang Sar-e-Sang River ⓘ ~~Pitwak Mine~~	Thames Valley Minerals Specimen
Ghazni Muqur District ⓘ Zarkashan Au-Cu deposit	Stephen G. Peters et al. (2011) +1 other reference
Logar Mohammad Agha District ⓘ Aynak Cu deposit	Waizy et al. (2021)

Algeria
Djanet Province Djanet District ⓘ Gour Oumelalen Supergroup	Boureghda et al. (2016)

Antarctica


Argentina
Córdoba Province Santa María Department Alta Gracia District Alta Gracia ⓘ El Pozo quarry	Raul Jorge Tauber Larry specimen +1 other reference

Australia
Queensland ⓘ North Burnett Region	Updated list originally distributed by ...
Mount Biggenden ⓘ Biggenden Mine	part of list University of Queensland +1 other reference
South Australia Copper Coast Council Wallaroo ⓘ Wallaroo Mine	Pring (1988)
Pastoral Unincorporated Area Coober Pedy ⓘ Cairn Hill mine	Mount Woods Inlier et al. (Honors thesis) +1 other reference
Mount Victor Plumbago Station ⓘ Ethiudna East Cobalt Prospect	Grguric (1992)
Tasmania Waratah-Wynyard municipality Waratah district Mt Ramsay ⓘ Mt Ramsay mine	Bottrill et al. (2008)

Austria
Carinthia Wolfsberg District Frantschach-Sankt Gertraud Brandrücken ⓘ Spodumene prospect
ⓘ Gösler Hütte	Carinthia II (2013)
Wolfsberg ⓘ Gertrusk	Raith (1998)
Lower Austria Horn District Drosendorf-Zissersdorf Wollmersdorf (Zettlitz-Wollmersdorf) ⓘ Graphite quarry	Müller (2016)
Krems-Land District Lichtenau im Waldviertel Wietzen ⓘ Scheelite occurrence	Beran et al. (1985)
Maria Laach am Jauerling Felbring ⓘ Siebenhandl quarry (Kraxnerklippe)	Löffler et al. (2011)
Zintring ⓘ Unnamed quarry	Kolitsch et al. (2012)
Mühldorf Amstall ⓘ Graphite quarry	Exel (1993)
Melk District Persenbeug-Gottsdorf Loja ⓘ Quarry IV - middle & northern area	Löffler et al. (2011)
Weiten Am Schuß ⓘ Am Schuß quarry	Kolitsch et al. (2022)
ⓘ Streitwiesen	Beran et al. (1985)
Waidhofen an der Thaya District Raabs an der Thaya Eibenstein an der Thaya ⓘ Hengl quarry	Götzinger et al. (1994)
Styria Deutschlandsberg District Bad Schwanberg ⓘ Hartner quarry	Aufschluss 1972 (SB)

Brazil
Bahia Capim Grosso ⓘ Rio do Peixe claim	Projeto Apatita
ⓘ Ipirá complex	Projeto Apatita
Rio Grande do Norte Currais Novos ⓘ Brejui mine	Souza Neto et al. (2008) +1 other reference

Bulgaria
Kyustendil Province Rila Municipality ⓘ Belya Uluk	Phil Betancourt

Canada
British Columbia Greenwood Mining Division Grand Forks ⓘ Marble quarry (Kettle River Rock quarry)	Richard Gunter
Osoyoos Mining Division Hedley ⓘ Nickel Plate Mine	Econ Geol (1992)
Nunavut Qikiqtaaluk Region Baffin Island ⓘ Kimmirut (Lake Harbour)	181. +1 other reference
ⓘ Beluga sapphire property	Belley et al. (2017)
Ontario ⓘ Bancroft area	Grice (1989)
Haliburton County Highlands East Township Cardiff Township ⓘ Cardiff Uranium Mine	King (n.d.)
Glamorgan Township ⓘ Gooderham area	Anthony et al. (2016)
ⓘ Highway 507 graphite occurrence ?	Maggie Wilson
Minden Hills Township Minden Township ⓘ Route 21 outcrop	Al Burnett
Hastings County Hastings Highlands Municipality Herschel Township ⓘ Baptiste Lake area	Montgomery (n.d.)
Maynooth ⓘ Highway 62 Road cut	King (n.d.)
Wollaston Township ⓘ Route 620 road cut	King (n.d.)
Thunder Bay District ⓘ Coldwell complex	Mitchell (1991)
Québec Abitibi-Témiscamingue La Vallée-de-l'Or RCM Réservoir-Dozois ⓘ Cabonga Reservoir	Age of the Cabonga nepheline syenite +4 other references
Témiscamingue RCM Les Lacs-du-Témiscamingue ⓘ Kipawa alkaline complex
Laurentides Antoine-Labelle RCM Notre-Dame-du-Laus ⓘ Parker Mine	Velthuizen (1993)
Argenteuil RCM Grenville-sur-la-Rouge ⓘ Autoroute 50 roadcut No. 1	Bourdeau (2008)
ⓘ Grenville Scapolite prospect	King (n.d.)
Pointe-au-Chêne ⓘ McGill Scapolite Prospect	King (n.d.)
Montérégie La Vallée-du-Richelieu RCM Mont Saint-Hilaire ⓘ Poudrette quarry (De-Mix quarry; Demix quarry; Uni-Mix quarry; Carrière Mont Saint-Hilaire; MSH)	Horváth et al. (1990)
Outaouais Les Collines-de-l'Outaouais RCM Chelsea Autoroute 5 ⓘ Autoroute 5 extension	Jeffrey de Fourestier field collected ...
Autoroute 5 roadcuts ⓘ Cross Loop Road Cut (Site 1 of Phase 2)	Jeffrey de Fourestier collection
Pontiac RCM Litchfield ⓘ Bear Lake	Cindy Hasler
ⓘ Highway 301 Roadcut	Mineralienkabinet J. de Fourestier
ⓘ Otter Lake	Haughton (1971)
ⓘ Portage-du-Fort	Belley et al. (2014)

China
Jiangxi Shangrao Yanshan Co. (Qianshan Co.) Yongping ⓘ Yongping Mine (Shuiping Mine)	Zongting Liao et al. (2001)
Liaoning Dalian Wafangdian City ⓘ Diaoyutai	Lu et al. (2016)

Finland
Satakunta Siikainen ⓘ Otamo dolomite quarry	Joel Dyer collection
South Karelia Lappeenranta ⓘ Ihalainen limestone quarry	Hytönen (1999)
Southwest Finland Pargas ⓘ Ahvensaari	Eskola et. al 1919
Pargas limestone mine ⓘ Limberg quarry	Hietala
ⓘ Skräbböle Quarry	Niedermayr (2008)

France
Auvergne-Rhône-Alpes Puy-de-Dôme Issoire Nébouzat ⓘ Chuquet Genestoux quarry	Torró et al. (2018)

Germany
Bavaria Lower Bavaria Passau District Untergriesbach Pfaffenreut ⓘ Zwingau shaft	Weiß (1990)
Rhineland-Palatinate Ahrweiler Brohltal Glees ⓘ Gleeser Felder	Rath
ⓘ Hüttenberg sand pit	Brauns (1922) +1 other reference
Mayen-Koblenz Maifeld Ochtendung ⓘ Eiterköpfe quarry	Weiß (1990)
Mayen ⓘ Mayener Feld	Brauns (1922)
Mendig Mendig ⓘ In den Dellen quarries	Rath
ⓘ Thelenberg	Rath
Wingertsberg ⓘ Pumice quarries	Rath
Pellenz Kruft ⓘ Krufter Ofen	Rath
Vordereifel Ettringen ⓘ Caspar quarry	Hentschel (1983)
ⓘ Ettringer Feld	Brauns (1922)
Kottenheim ⓘ Hufnagel	Hentschel (1983)
Vulkaneifel Daun Dreis-Brück Dreis ⓘ Dreiser Weiher	Frechen (1963)
Gerolstein Rockeskyll Rockeskyll volcanic complex ⓘ Auf Dickel (incl. Nonnental)	Haardt

India
Andhra Pradesh Visakhapatnam District Paderu ⓘ Borra	Gondwana Research 3 (1) +1 other reference
Rajasthan Jaipur district ⓘ Saladipura Cu-Zn deposit	Sarkar et al. (1980)

Italy
Campania Metropolitan City of Naples Ercolano San Vito ⓘ San Vito Quarry	Russo et al. (2004)
ⓘ Vallone di San Sebastiano	Gruppo Mineralogico Geologico ...
ⓘ Mount Somma (TL)	[Traite Min. (1801) +2 other references
Pollena Trocchia ⓘ Lagno di Pollena	Carati (1982)
ⓘ Pollena quarries
Pozzuoli ⓘ San Vito geothermal field	Belkin et al. (2024)
Torre del Greco ⓘ Villa Inglese quarries	Russo (2003)
ⓘ Somma-Vesuvius Complex	Panikorovskii et al. (2017)
Lazio Metropolitan City of Rome Capital Sacrofano ⓘ Biachella Valley	Stoppani et al. (1982) +1 other reference
Lombardy Brescia Province Paspardo ⓘ Sablunera Mount	G. Branchi (2006)
Sondrio Province Chiesa in Valmalenco ⓘ Sissone Valley	Marchesini et al. (2025)
Valfurva ⓘ Cima delle Pale Rosse	Bedognè et al. (2006)
Villa di Chiavenna ⓘ Giavera	Bedogné et al. (1995)
Piedmont Biella Province Rosazza ⓘ Rosazza Quarry	Piccoli et al. (2007)
Metropolitan City of Turin Traversella ⓘ Gias del Gallo	Piccoli et al. (2007)
Verbano-Cusio-Ossola Province Crevoladossola ⓘ Crevoladossola Quarry	Piccoli et al. (2007)
Ornavasso ⓘ Migiandone Mine (Miggiandone)	Piccoli et al. (2007)
ⓘ Premosello-Chiovenda	Piccoli et al. (2007)
Santa Maria Maggiore Basso Valley Cedo Alp ⓘ Rio del Castello	Piccoli et al. (2007)
Valstrona ⓘ Monte Eyehorn pegmatites (Monte Ehie Horn pegmatites)	Rivalenti (1968) +1 other reference
Trentino-Alto Adige/Südtirol South Tyrol Wipptal (Alta Vall'Isarco) ⓘ Sterzing (Vipiteno)	Thomson (1825)

Japan
Iwate Prefecture Kamaishi City ⓘ Kamaishi mine	- (n.d.)
Mie Prefecture Kameyama City ⓘ Kabutoichiba	Banno (2008)

Kyrgyzstan
Issyk-Kul Region ⓘ Kensu Mine	Soloviev (2011)

Madagascar
Androy Ambovombe-Androy Ampamata ⓘ Mafilefy phlogopite mine	Majmundar (1970)
Bekily District Beraketa Commune ⓘ Ampandrandava phlogopite mine	Royal Museum for Central Africa
Anosy Amboasary Sud District ⓘ Tranomaro-Maromby area	WANG Feng-gang; FAN Hong-hai; FAN Cun-kun (2015)
Tranomaro ⓘ Andranokaolo thorianite deposit (Andrakaholo; Andrakakolo)	Pavel M. Kartashov data of 2015
Ihorombe Ihosy District Soamatasy ⓘ Gem Scapolite occurrence	Superchi et al. (2010)
Matsiatra Ambony Ikalamavony District ⓘ Tsitondroina	Royal Museum for Central Africa
Vakinankaratra Antsirabe II District Ambohitsimanova ⓘ Soamiakatra	Giuliani et al. (2020) +1 other reference

Mexico
Oaxaca La Pe Municipality La Panchita ⓘ La Panchita Mine	Panczner (1987) +2 other references

Myanmar
Mandalay Region Pyin-Oo-Lwin District Mogok Township Mogok Valley ⓘ Ohn-bin-ywe-htwet (Coconut Tree mine)	Themelis (2008)

Namibia
Erongo Region Dâures Constituency ⓘ Ais (Ais Dome)	- (n.d.)
Omaruru Constituency ⓘ Otjua tungsten prospect	Steven et al. (1994)
Khomas Region Windhoek Rural ⓘ Okahua Farm 418	A. Wohlschläger (2001)

Norway
Agder Kristiansand ⓘ Eg (Eeg)	Revheim (2010)
ⓘ Gimlekollen	Olav Revheim
Kalkheia ⓘ Kongegruva Limestone Mine	Revheim (2010)
Nordland Sortland Godfjorden ⓘ Mehus	Eriksen (2017)
Trøndelag Heim Halsa ⓘ E 39 Vinjefjorden	Nordrum (2009)
Vestland Bergen Ytrebygda ⓘ Kokstad	Peter Andresen collection

Poland
Opole Voivodeship Nysa County Gmina Głuchołazy ⓘ Sławniowice	Szełęg E. (scapolite group) +1 other reference

Russia
Buryatia Baunt District Vitim Plateau ⓘ Kavokta deposit	Kislov (2024)
Irkutsk Oblast Slyudyansky District ⓘ Slyudyanka	salvatore natalizia.collection +1 other reference
ⓘ Slyudyanskoe lazurite deposit	Bolotina et al. (2024)
Murmansk Oblast Kandalakshsky District ⓘ Kovdozero complex	Barkov et al. (2025)
Republic of Karelia Pitkyarantsky District Pitkyaranta mining district ⓘ Linnavaara	I.V.Pekov. E.A.Vlasov. E.A.Gerasimova Pitkyarantskaya mineralogical practice et al. (in Russian)
ⓘ Sakha	[World of Stones 12:49]

South Africa
KwaZulu-Natal Ugu District Municipality ⓘ Marble Delta	Cairncross et al. (1995)
Limpopo Sekhukhune District Municipality Fetakgomo Tubatse Local Municipality ⓘ Penge Mine	Cairncross et al. (1995)
Makhuduthamaga Local Municipality ⓘ Spitskop Alkaline Igneous Complex	Cairncross et al. (1995)
Vhembe District Municipality Makhado Local Municipality ⓘ Joffre Farm	Cairncross et al. (1995)
Northern Cape Pixley ka Seme District Municipality Ubuntu Local Municipality Victoria West ⓘ Lushof Mine	Mathias et al. (1970)

Spain
Catalonia Girona Olot ⓘ Pomereda volcano	Torró et al. (2018)
Santa Pau ⓘ Rocanegra volcano	Torró et al. (2018)
Extremadura Badajoz Burguillos del Cerro ⓘ Nueva Vizcaya Mine	Calvo Rebollar (2018)
Monesterio ⓘ Aguablanca Mine (Agua Blanca Mine)	Tornos et al. (2006)

Sweden
Norrbotten County Gällivare ⓘ Aitik Mine	Boliden Group
Örebro County Hällefors ⓘ Upper Leptitehalleflinta group	Hellingwerf (1985)
Ljusnarsberg Kopparberg ⓘ Wigströmsgruvan	c1997 +1 other reference
Stockholm County Nynäshamn ⓘ Stora Vika
Värmland County Filipstad Gåsborn ⓘ Gåsborn Mines
Nordmark mining district Jakobsberg ore field ⓘ Jakobsberg Mine
Persberg ore district ⓘ Gåsgruvan Quarry

Switzerland
Ticino Blenio Blenio Valley Santa Maria Valley Acquacalda ⓘ Campra	Stalder et al. (1998)
ⓘ Camperio	Stalder et al. (1998)
Leventina Piumogna Valley ⓘ Campolungo	Stalder et al. (1998)
Prato (Leventina) Fiesso ⓘ Lake Tremorgio	Stalder et al. (1998)

Tajikistan
Gorno-Badakhshan Murghob Rangkul ⓘ Snezhnoe deposit	Litvinenko +8 other references

USA
Arizona Cochise County Bisbee Queen Hill Copper Queen Mine ⓘ Holbrook Mine	Grant et al. (2005)
California Fresno County Kaiser Wilderness area ⓘ Unnamed Skarn occurrence [1]	Ted A. Hadley and Daniel J. Evanich (2021)
Riverside County Jurupa Valley Crestmore ⓘ Crestmore quarries	[micromounts@yahoogroups.com]
Santa Cruz County Santa Cruz ⓘ Pacific Cement and Aggregate Company quarry	Cooper et al. (1986)
Colorado Grand County ⓘ Strawberry Lake	Eckel et al. (1997)
Jefferson County ⓘ Genesee Park calc-silicate locality	Eckel et al. (1997)
Connecticut Middlesex County Haddam Haddam Neck ⓘ Connecticut Yankee atomic power plant	Harold Moritz Collection
ⓘ Hazen quarry (Epidote locality)	Weber et al. (1995)
ⓘ Jail Hill Road locality (Jail Hill Quarry)	Moritz (n.d.)
New Haven County Orange ⓘ Lambert Road serpentinite	Moritz (n.d.)
Georgia Fannin County ⓘ Cutcane Creek	...
Idaho Lemhi County Spring Mountain Mining District Quartzite Canyon ⓘ Unnamed skarn	Ream (2004)
Maine Androscoggin County Lewiston ⓘ Robinson Mountain	King et al. (1994)
Minot ⓘ Pitts-Tenney Quarry	Thompson et al. (1998)
Cumberland County Casco ⓘ Chute prospect	Thompson et al. (1998)
Harpswell ⓘ Bombazine Island	...
Franklin County Farmington ⓘ Farmington Falls Road Cut (Route 2)	King et al. (1994)
Oxford County Greenwood ⓘ Noyes Mountain Quarry (Harvard Quarry)	W. B. Thompson et al. (2005)
ⓘ Tamminen Quarry	W. B. Thompson et al. (2005)
Rumford ⓘ Rumford Falls
Sagadahoc County Phippsburg ⓘ Basin Quarry	Thompson
York County Cornish ⓘ Berry Ledge
ⓘ Day Hill
South Cornish ⓘ Doctor Healey Farm	King (n.d.)
Parsonsfield ⓘ Parsonsfield Vesuvianite locality
Sanford ⓘ Webster prospects (Sanford vesuvianite locality; Goodall Farm prospect; Webster vesuvianite prospect)	Leavitt et al. (1993)
ⓘ Six Hundred Meter Locality	King et al. (1994)
ⓘ Two Hundred meter Locality	King (n.d.)
Massachusetts Middlesex County Marlborough ⓘ Interstate 290/Interstate 495 interchange road cuts	Garza (1980)
Worcester County Bolton ⓘ Bolton Lime Quarries (Bolton Quarry; Whitcomb Quarry; Hildreth Quarry)	[var: Nuttallite] Sherriff et al. (2000) +1 other reference
Michigan Dickinson County Felch ⓘ Metronite Quarry	Heinrich et al. (2004)
ⓘ Rian Quarry	Heinrich et al. (2004)
Montana Granite County Philipsburg Mining District (Flint Creek Mining District) Franklin Hill Iron Deposit (Tarriff; Courtney Manganiferous Iron Deposit; Courtney Prospect) ⓘ Redemption Iron Mine	Gobla (2012)
Jefferson County Pipestone Mining District Delmoe Lake Road occurrences ⓘ Delmoe Road skarn	Gibson (2018)
Lewis and Clark County Helena Mining District (Spring Hill Mining District) Helena ⓘ Crazy Sphinx Mine (Dry Gulch; Crazy Sphinx claim)	Tucker (n.d.) +2 other references
Nevada Pershing County ⓘ Buena Vista Hills	Castor et al. (2004)
New Hampshire Coos County Carroll ⓘ Twin Mountain Quarry	P. Cristofono collection
Hillsborough County ⓘ Manchester	Smith (2005)
ⓘ Manchester Armory locality	Stewart
New Jersey Sussex County Franklin ⓘ Franklin Mine	[var: Algerite] Hunt (1852)
ⓘ Franklin Quarry	Betancourt (The Picking Table, Vol. 27)
Hamburg Hardistonville ⓘ Atlas Quarry (The Quarry)	Rocks & Min.: 21:668-669.
Hardyston Township Rudeville ⓘ Unspecified Meionite occurrence [1]	New Jersey State Geologist Annual Report (1890)
Ogdensburg Sterling Hill ⓘ Passaic pit (Marshall Mine; Passaic Mine)	512. +1 other reference
Sparta Township ⓘ Lime Crest Quarry	Harold Moritz Collection
New Mexico Hidalgo County Sylvanite Mining District ⓘ Ridgewood Mine	Lasky (1947) +1 other reference
Luna County Victorio Mountains Victorio District (Gage District) Victorio group ⓘ Vic 10 claim	undefined
New York Essex County Keene Township ⓘ Keene Valley Airport (Marcy Field)	Robinson et al. (2007)
Minerva Township ⓘ Olmstedville	New York State Museum mineral collection +1 other reference
ⓘ Newcomb Township	NY State Museum spec. no. 18143
Ticonderoga Township ⓘ Lead Hill Mines (Chilson Hill Mine)	New York State Museum Bulletin No. 199 et al. (July, 1917) +2 other references
Jefferson County Wilna Natural Bridge ⓘ Natural Bridge gieseckite locality	Robinson et al. (2007)
Lewis County Diana Township ⓘ Natural Bridge station	[var: Nuttallite] Beck
ⓘ Farr property	Robinson et al. (2007) +1 other reference
Orange County Bear Mountain State Park ⓘ Brooks Hollow Dam	Bear Mountain Museum Collection
ⓘ Town of Tuxedo	Manchester (1931)
Town of Warwick ⓘ Amity	Manchester (1931)
ⓘ Rhein Property	Rhein Collection
ⓘ Edenville	Manchester (1931)
Edenite Hill ⓘ Pipeline Excavation	King (n.d.)
ⓘ Pine Island	NY State Museum spec. no. 18089
ⓘ Two Ponds	Robinson et al. (2007)
Putnam County Town of Southeast ⓘ Interstate 84 road cuts	former Ronald Januzzi collection.
Rockland County Bear Mountain State Park ⓘ Iona Island	Robinson et al. (2007)
St. Lawrence County Canton Pyrites ⓘ James Kelly farm	Chamberlain et al. (2018)
ⓘ Gouverneur	NY State Museum spec. no. 18793
Pierrepont ⓘ Finlay farm	Robinson et al. (2007)
ⓘ Owen prospect	Steven C. Chamberlain (2012)
Pitcairn Rose Road ⓘ Mulvaney property (Rose Road wollastonite deposit; McDonald Sugar Bush)	Steven C. Chamberlain
ⓘ Purple Diopside Mound (PDM)	Chamberlain et al. (2014)
ⓘ North Carolina
Clay County Elf ⓘ Hiawassee Corundum Company No. 2 Mine	Pratt et al. (1906)
Rhode Island Providence County Providence Manton ⓘ Manton Avenue Quarry	Miller (1971)
Tennessee Carter County Cranberry Magnetite Mining District ⓘ State line perovskite occurrence	Paris (2011)
Vermont ⓘ Windham County	Rocks & Min. Vol. 71 (1996)
Washington ⓘ Chelan County
Okanogan County ⓘ Barber Mountain	Cannon (1975)
ⓘ Tonasket Meionite Occurrence	Cannon (1975)

Zambia
North-Western Province Solwezi District ⓘ Kansanshi Mine	MacIntyre (2019)

Zimbabwe
Masvingo Masvingo District ⓘ Renco Mine	Kisters et al. (1998)

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Meionite

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