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Muscovite-Paragonite Series

A solid-solution series between two end-member minerals

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Photos of Muscovite-Paragonite Series (2567)Recorded Ages and Analyses Discuss Muscovite-Paragonite Series

Muscovite-Paragonite Series Gallery Search Photos of Muscovite-Paragonite Series

Edit Muscovite-Paragonite Series Add Synonym Edit CIF structures Clear Cache

Sericite, etc.

Cerro Quesgar, Pampas District, Pallasca Province, Ancash, Peru

Muscovite

Zé Pinto claim, Aldeia, Cuparaque, Minas Gerais, Brazil

Muscovite, etc.

Lengenbach Quarry, Fäld, Binn, Goms, Valais, Switzerland

Sericite, etc.

Cerro Quesgar, Pampas District, Pallasca Province, Ancash, Peru

Muscovite

Zé Pinto claim, Aldeia, Cuparaque, Minas Gerais, Brazil

Muscovite, etc.

Lengenbach Quarry, Fäld, Binn, Goms, Valais, Switzerland

Sericite, etc.

Cerro Quesgar, Pampas District, Pallasca Province, Ancash, Peru

Muscovite

Zé Pinto claim, Aldeia, Cuparaque, Minas Gerais, Brazil

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About Muscovite-Paragonite SeriesHide

Series Formula:

KAl₂(AlSi₃O₁₀)(OH)₂ to NaAl₂(AlSi₃O₁₀)(OH)₂

A series between Muscovite and Paragonite

Unique IdentifiersHide

Mindat ID:

38729

Long-form identifier:

mindat:1:1:38729:7

Age distributionHide

Recorded ages:

Mesoarchean to Quaternary : 2890 Ma to 1.31 ± 0.05 Ma - based on 213 recorded ages.

Chemical AnalysisHide

Oxide wt%:

	1	2
SiO₂	48.21 %	48.93 %
TiO₂	1.06 %	0.39 %
Al₂O₃	32.13 %	28.05 %
FeO	5.46 %	2.25 %
MgO	0.25 %	3.36 %
MnO	0.09 %	0.09 %
Na₂O	1.04 %	0.68 %
K₂O	8.56 %	10.30 %
P₂O₅	0.03 %
Cr₂O₃		0.15 %
CaO		0.06 %
Total:	96.83 %	94.26 %

Empirical formulas:

Sample ID	Empirical Formula
2	K_0.89Na_0.09(Mg_0.34 Fe_0.13 Mn_0.01 Ti_0.02Al_1.51)_Σ2.11(Al_0.69Si_3.31)_Σ4.00O₁₀OH₂

Sample references:

ID	Locality	Reference	Notes
1	Kawadgaon-Challanpara pegmatite field, Dantewada District, Chhattisgarh, India	Singh, Yamuna, Pandit, P. S. C., Bagora, Sanjay, Jain, P. K. (2017) Mineralogy, geochemistry, and genesis of co-genetic granite-pegmatite-hosted rare metal and rare earth deposits of the Kawadgaon area, Bastar craton, Central India. Journal of the Geological Society of India, 89 (2) 115-130 doi:10.1007/s12594-017-0574-2	Muscovite from granite pegmatite. EMPA analysis
2	Steinsteg eclogite, Frosnitz valley, Matrei in Osttirol, Lienz District, Tyrol, Austria	Hoschek, G (2001) Thermobarometry of metasediments and metabasites from the Eclogite zone of the Hohe Tauern, Eastern Alps, Austria. Lithos, 59 (3) 127-150 doi:10.1016/s0024-4937(01)00063-9	EMPA analysis of a matrix phengite in a post eclogite-facies mica schists.

Crystal StructureHide

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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	Pressure (GPa)	Temp (K)
0000854	Muscovite	Richardson S M, Richardson J W (1982) Crystal structure of a pink muscovite from Archer's Post, Kenya: Implications for reverse pleochroism in dioctahedral micas American Mineralogist 67 69-75	1982		0	293
0001076	Muscovite	Guggenheim S, Chang Y H, Koster van Groos A F (1987) Muscovite dehydroxylation: High-temperature studies American Mineralogist 72 537-550	1987		0	293
0001077	Muscovite	Guggenheim S, Chang Y H, Koster van Groos A F (1987) Muscovite dehydroxylation: High-temperature studies American Mineralogist 72 537-550	1987		0	293
0001078	Muscovite	Guggenheim S, Chang Y H, Koster van Groos A F (1987) Muscovite dehydroxylation: High-temperature studies American Mineralogist 72 537-550	1987		0	293
0001079	Muscovite	Guggenheim S, Chang Y H, Koster van Groos A F (1987) Muscovite dehydroxylation: High-temperature studies American Mineralogist 72 537-550	1987		0	293
0001080	Muscovite	Guggenheim S, Chang Y H, Koster van Groos A F (1987) Muscovite dehydroxylation: High-temperature studies American Mineralogist 72 537-550	1987		0	293
0002013	Muscovite	Brigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample GA1 from a pegmatite on Maddalena Island, Italy American Mineralogist 83 775-785	1998		0	293
0002014	Muscovite	Brigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample RA1 from a pegmatite on Antarctica American Mineralogist 83 775-785	1998		0	293
0002015	Muscovite	Brigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample A4b from peraluminous granites at Sardinia, Italy American Mineralogist 83 775-785	1998		0	293
0002016	Muscovite	Brigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample GFS15Ab from peraluminous granites at Sardinia, Italy American Mineralogist 83 775-785	1998		0	293
0002017	Muscovite	Brigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample H87b from peraluminous granites at Sardinia, Italy American Mineralogist 83 775-785	1998		0	293
0002018	Muscovite	Brigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample CC1b from peraluminous granites at Northern Victoria Land, Antarctica American Mineralogist 83 775-785	1998		0	293
0002019	Muscovite	Brigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample C3-29b from peraluminous granites at Northern Victoria Land, Antarctica American Mineralogist 83 775-785	1998		0	293
0002020	Muscovite	Brigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample B1b from peraluminous granites at Northern Victoria Land, Antarctica American Mineralogist 83 775-785	1998		0	293
0002021	Muscovite	Brigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample C6Cb from peraluminous granites at Northern Victoria Land, Antarctica American Mineralogist 83 775-785	1998		0	293
0002022	Muscovite	Brigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample C6Bb from peraluminous granites at Northern Victoria Land, Antarctica American Mineralogist 83 775-785	1998		0	293
0002023	Muscovite	Brigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample C3-31b from peraluminous granites at Northern Victoria Land, Antarctica American Mineralogist 83 775-785	1998		0	293
0019256	Muscovite	Mesto E, Scordari F, Lacalamita M, Schingaro E (2012) Tobelite and NH4+ -rich muscovite single crystals from Ordovician Armorican sandstones (Brittany, France): Structure and crystal chemistry American Mineralogist 97 1460-1468	2012	Ordovician Armorican sandstones, Brittany, France	0	293
0005483	Muscovite	Liang J, Hawthorne F C (1996) Rietveld refinement of micaceous materials: muscovite-2M1, a comparison with single-crystal structure refinement The Canadian Mineralogist 34 115-122	1996		0	293
0005484	Muscovite	Liang J, Hawthorne F C (1996) Rietveld refinement of micaceous materials: muscovite-2M1, a comparison with single-crystal structure refinement The Canadian Mineralogist 34 115-122	1996		0	293
0005485	Muscovite	Liang J, Hawthorne F C (1996) Rietveld refinement of micaceous materials: muscovite-2M1, a comparison with single-crystal structure refinement The Canadian Mineralogist 34 115-122	1996		0	293
0005549	Muscovite	Liang J, Hawthorne F C, Swainson I P (1998) Triclinic muscovite: X-ray diffraction, neutron diffraction and photo-acoustic FTIR spectroscopy The Canadian Mineralogist 36 1017-1027	1998		0	293
0005550	Muscovite	Liang J, Hawthorne F C, Swainson I P (1998) Triclinic muscovite: X-ray diffraction, neutron diffraction and photo-acoustic FTIR spectroscopy The Canadian Mineralogist 36 1017-1027	1998		0	293
0005733	Muscovite	Brigatti M F, Kile D E, Poppi M (2001) Crystal structure and crystal chemistry of lithium-bearing muscovite-2M1 The Canadian Mineralogist 39 1171-1180	2001		0	293
0005734	Muscovite	Brigatti M F, Kile D E, Poppi M (2001) Crystal structure and crystal chemistry of lithium-bearing muscovite-2M1 The Canadian Mineralogist 39 1171-1180	2001		0	293
0005735	Muscovite	Brigatti M F, Kile D E, Poppi M (2001) Crystal structure and crystal chemistry of lithium-bearing muscovite-2M1 O4 B33 is missing a zero The Canadian Mineralogist 39 1171-1180	2001		0	293
0005736	Muscovite	Brigatti M F, Kile D E, Poppi M (2001) Crystal structure and crystal chemistry of lithium-bearing muscovite-2M1 The Canadian Mineralogist 39 1171-1180	2001		0	293
0005737	Muscovite	Brigatti M F, Kile D E, Poppi M (2001) Crystal structure and crystal chemistry of lithium-bearing muscovite-2M1 The Canadian Mineralogist 39 1171-1180	2001		0	293
0006358	Muscovite	Catti M, Ferraris G, Ivaldi G (1989) Thermal strain analysis in the crystal structure of muscovite at 700 C European Journal of Mineralogy 1 625-632	1989		0	298
0006359	Muscovite	Catti M, Ferraris G, Ivaldi G (1989) Thermal strain analysis in the crystal structure of muscovite at 700 C T= 700 C European Journal of Mineralogy 1 625-632	1989		0	293
0006533	Muscovite	Catti M, Ferraris G, Hull S, Pavese A (1994) Powder neutron diffraction study of 2M_1 muscovite at room pressure and at 2 GPa European Journal of Mineralogy 6 171-178	1994		0	293
0006534	Muscovite	Catti M, Ferraris G, Hull S, Pavese A (1994) Powder neutron diffraction study of 2M_1 muscovite at room pressure and at 2 GPa European Journal of Mineralogy 6 171-178	1994		2	293
0006546	Muscovite	Amisano-Canesi A, Chiari G, Ferraris G, Ivaldi G, Soboleva S V (1994) Muscovite- and phengite-3T: crystal structure and conditions of formation European Journal of Mineralogy 6 489-496	1994	Kazakhstan	0	293
0006547	Muscovite	Amisano-Canesi A, Chiari G, Ferraris G, Ivaldi G, Soboleva S V (1994) Muscovite- and phengite-3T: crystal structure and conditions of formation European Journal of Mineralogy 6 489-496	1994	Dora-Maira	0	293
0006858	Muscovite	Brigatti M F, Galli E, Medici L, Poppi L, Cibin G, Marcelli A, Mottana A (2001) Chromium-containing muscovite: crystal chemistry and XANES spectroscopy European Journal of Mineralogy 13 377-389	2001	Westland	0	293
0006859	Muscovite	Brigatti M F, Galli E, Medici L, Poppi L, Cibin G, Marcelli A, Mottana A (2001) Chromium-containing muscovite: crystal chemistry and XANES spectroscopy European Journal of Mineralogy 13 377-389	2001	Northwest Nelson - Campbell Creek	0	293
0006860	Muscovite	Brigatti M F, Galli E, Medici L, Poppi L, Cibin G, Marcelli A, Mottana A (2001) Chromium-containing muscovite: crystal chemistry and XANES spectroscopy European Journal of Mineralogy 13 377-389	2001	Northwest Nelson - Anatoki River	0	293
0007908	Muscovite	Comodi P, Zanazzi P F (1995) High-pressure structural study of muscovite Physics and Chemistry of Minerals 22 170-177	1995		0.05	293
0007909	Muscovite	Comodi P, Zanazzi P F (1995) High-pressure structural study of muscovite Physics and Chemistry of Minerals 22 170-177	1995		2.8	293
0007910	Muscovite	Comodi P, Zanazzi P F (1995) High-pressure structural study of muscovite Physics and Chemistry of Minerals 22 170-177	1995		0.0001	293
0007911	Muscovite	Comodi P, Zanazzi P F (1995) High-pressure structural study of muscovite Physics and Chemistry of Minerals 22 170-177	1995		2.7	293
0018220	Muscovite	Radoslovich E (1960) The Structure of Muscovite, K Al2 (Si3 Al) O10 (O H)2 _cod_database_code 1100012 Acta Crystallographica 13 919-932	1960		0	293
0018279	Muscovite	Gueven N, Burnham C (1966) The Crystal Structure of 3T Muscovite _cod_database_code 1101031 Zeitschrift fur Kristallographie 65 290-293	1966		0	293
0010646	Muscovite	Guven N, Burnham C W (1967) The crystal structure of 3T muscovite Snohomish County, Washington, USA Zeitschrift fur Kristallographie 125 163-183	1967	in granodiorite near Sunrise Copper Prospect, Sultan Basin,	0	293
0019601	Muscovite	Guven N (1971) The crystal structures of 2M1 phengite and 2M1 muscovite Zeitschrift fur Kristallographie 134 196-212	1971	Tiburon Peninsula, California, USA	0	293
0019602	Muscovite	Guven N (1971) The crystal structures of 2M1 phengite and 2M1 muscovite Zeitschrift fur Kristallographie 134 196-212	1971	pegmatite in Georgia, USA	0	293
0018221	Muscovite	Guven N, Burnham C (1966) The crystal structure of 3T muscovite _cod_database_code 1100014 Carnegie Institution of Washington: Yearbook 65 290-293	1966	Sunrise copper prospect, Snohomish Co, Washington, USA	0	293
0012228	Muscovite	Tomita K, Shiraki K, Kawano M (1998) Crystal structure of dehydroxylated 2M1 sericite and its relationship with mixed-layer mica/smectite Clay Science 10 423-441	1998	Goto mine, Nagasaki Prefecture, Japan	0	293
0012229	Muscovite	Tomita K, Shiraki K, Kawano M (1998) Crystal structure of dehydroxylated 2M1 sericite and its relationship with mixed-layer mica/smectite Clay Science 10 423-441	1998		0	293
0019604	Muscovite	Rule A C, Bailey S W (1985) Refinement of the crystal structure of phengite-2M1 Clays and Clay Minerals 33 403-409	1985	Rio de Oro, Spanish Sahara	0	293
0019597	Muscovite	Knurr R A, Bailey S W (1986) Refinement of Mn-substituted muscovite and phlogopite Clays and Clay Minerals 34 7-16	1986	Minas Gerais, Brazil	0	293
0012259	Muscovite	Gatineau L (1963) Localisation des remplacements isomorphiques dans la muscovite _cod_database_code 1000042 Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences 256 4648-4649	1963		0	293
0018219	Muscovite	Birle J, Tettenhorst R (1968) Refined Muscovite structure _cod_database_code 1100010 Mineralogical Magazine 36 883-886	1968		0	293
0014475	Muscovite	Martin-Ramos JD, Rodriguez-Gallego M (1982) Chromian mica from Sierra Nevada, Spain Mineralogical Magazine 46 269-272	1982	Sierra Nevada, Spain	0	293
0014740	Muscovite	Rothbauer R (1971) Untersuchung eines 2M1-muskovits mit neutronenstrahlen Neues Jahrbuch fur Mineralogie, Monatshefte 1971 143-154	1971	Diamond mine, Black Hills, South Dakota, USA	0	293
0000924	Paragonite	Lin C Y, Bailey S W (1984) The crystal structure of paragonite-2M1 American Mineralogist 69 122-127	1984		0	293
0008000	Paragonite	Comodi P, Zanazzi P F (1997) Pressure dependence of structural parameters of paragonite Physics and Chemistry of Minerals 24 274-280	1997		0.00001	293
0008001	Paragonite	Comodi P, Zanazzi P F (1997) Pressure dependence of structural parameters of paragonite Physics and Chemistry of Minerals 24 274-280	1997		0.05	293
0008002	Paragonite	Comodi P, Zanazzi P F (1997) Pressure dependence of structural parameters of paragonite Physics and Chemistry of Minerals 24 274-280	1997		2.54	293
0008003	Paragonite	Comodi P, Zanazzi P F (1997) Pressure dependence of structural parameters of paragonite Physics and Chemistry of Minerals 24 274-280	1997		4.05	293
0008407	Paragonite	Comodi P, Zanazzi P F (2000) Structural thermal behavior of paragonite and its dehydroxylate: a high-temperature single-crystal study Physics and Chemistry of Minerals 27 377-385	2000		0	298
0008408	Paragonite	Comodi P, Zanazzi P F (2000) Structural thermal behavior of paragonite and its dehydroxylate: a high-temperature single-crystal study Physics and Chemistry of Minerals 27 377-385	2000		0	483
0008409	Paragonite	Comodi P, Zanazzi P F (2000) Structural thermal behavior of paragonite and its dehydroxylate: a high-temperature single-crystal study Physics and Chemistry of Minerals 27 377-385	2000		0	723
0008410	Paragonite	Comodi P, Zanazzi P F (2000) Structural thermal behavior of paragonite and its dehydroxylate: a high-temperature single-crystal study Physics and Chemistry of Minerals 27 377-385	2000		0	873

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Muscovite'
loop_
_publ_author_name
'Richardson S M'
'Richardson J W'
_journal_name_full 'American Mineralogist'
_journal_volume 67 
_journal_year 1982
_journal_page_first 69
_journal_page_last 75
_publ_section_title
;
 Crystal structure of a pink muscovite from Archer's Post, Kenya: Implications
 for reverse pleochroism in dioctahedral micas
;
_database_code_amcsd 0000854
_chemical_formula_sum 'K Si3 Al3 O12 H2'
_cell_length_a 5.1988
_cell_length_b 9.0266
_cell_length_c 20.1058
_cell_angle_alpha 90
_cell_angle_beta 95.782
_cell_angle_gamma 90
_cell_volume 938.715
_exptl_crystal_density_diffrn      2.818
_symmetry_space_group_name_H-M 'C 1 2/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,1/2-z'
  '-x,-y,-z'
  '1/2-x,1/2-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
K   0.00000   0.09920   0.25000   1.00000
Si1   0.45100   0.25870   0.13550   0.75000
Al1   0.45100   0.25870   0.13550   0.25000
Si2   0.03540   0.42980   0.36460   0.75000
Al2   0.03540   0.42980   0.36460   0.25000
Al3   0.25060   0.08380   0.00020   1.00000
O1   0.38720   0.25250   0.05430   1.00000
O2   0.03660   0.44310   0.44590   1.00000
O3   0.41780   0.09310   0.16850   1.00000
O4   0.24750   0.37120   0.16850   1.00000
O5   0.25090   0.31320   0.34240   1.00000
O-H6   0.04220   0.06220   0.44920   1.00000
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
K 0.02548 0.03467 0.04034 0.00000 0.00482 0.00000
Si1 0.01545 0.01940 0.03041 -0.00118 0.00419 0.00183
Al1 0.01559 0.01940 0.03041 -0.00118 0.00419 0.00183
Si2 0.01355 0.02105 0.02838 -0.00237 0.00314 -0.00091
Al2 0.01355 0.02105 0.02838 -0.00237 0.00314 -0.00091
Al3 0.00989 0.01858 0.02635 0.00000 0.00105 0.00183
O1 0.02345 0.02807 0.03446 -0.00237 0.00629 0.00000
O2 0.02155 0.02724 0.03446 0.00378 0.00157 0.00732
O3 0.03483 0.03467 0.03446 0.00095 0.00629 0.00091
O4 0.02087 0.03632 0.04054 0.00402 0.00210 0.00274
O5 0.02656 0.03921 0.04662 0.00213 0.00210 -0.00640
O-H6 0.02656 0.03344 0.03649 -0.00426 0.00524 0.00091

Common AssociatesHide

Associated Minerals Based on Photo Data:

1 photo of Muscovite-Paragonite Series associated with Scapolite
1 photo of Muscovite-Paragonite Series associated with Albite	Na(AlSi₃O₈)

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.

Muscovite-Paragonite Series in petrologyHide

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

Internet Links for Muscovite-Paragonite SeriesHide

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References for Muscovite-Paragonite SeriesHide

Reference List:

Significant localities for Muscovite-Paragonite SeriesHide

Showing 25 significant localities out of 36,552 recorded on mindat.org.

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.

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.


Canada
Québec Abitibi-Témiscamingue La Vallée-de-l'Or RCM Réservoir-Dozois ⓘ Cabonga Reservoir	[Muscovite] Olivier Langelier Collection

Peru
Ancash Pallasca Province Pampas District ⓘ Pasto Bueno	[Muscovite] collections of Rock Currier +1 other reference

Switzerland
Ticino Leventina Faido Chironico Valley ⓘ Sponda Alp - Pizzo Forno	[Paragonite] Schaller et al. (1941) +3 other references
Valais Martigny Mont Chemin mining district ⓘ Martigny road tunnel	[Muscovite]

UK
Wales Carmarthenshire ⓘ Llandybie (Llandebie)	[Paragonite var: Brammallite] DAN Earth Sci. 208 (1973) +1 other reference

USA
Alabama Clay County ⓘ M&G Mine	[Muscovite] Anonymous. (1965) +1 other reference
Arizona Mohave County Virgin Mountains Virgin Peak (Bunkerville Mountain) Hummingbird claims ⓘ Chad Mountain Pegmatite	[Muscovite] Solomon Feinstein Collection. +1 other reference
California ⓘ Mariposa County	[Phengite var: Mariposite] Bowen et al. (1957) +2 other references
San Luis Obispo County Santa Lucia Mts (Santa Lucia Range) San Simeon ⓘ Beach cliffs	[Muscovite] Ron Layton Collection
Connecticut Fairfield County Redding Branchville ⓘ Fillow Quarry	[Muscovite] Cameron +7 other references
Hartford County Glastonbury South Glastonbury ⓘ Simpson Quarry (Wiarda Quarry)	[Muscovite] Rocks & Min 74:121 (1999) +1 other reference
Middlesex County East Hampton ⓘ Nathan Hall Quarry	[Muscovite] LMSCC Newsletter +1 other reference
Haddam Haddam Neck ⓘ Gillette Quarry (J-J Mine; Haddam Neck Quarry)	[Muscovite] Bowman (1902) +2 other references
ⓘ Hewitt Gem Quarry (Herb's Gem Quarry; Sawmill Quarry)	[Muscovite var: Schernikite] Adam Berlutti collection
Portland Collins Hill Strickland pegmatite ⓘ Strickland Quarry	[Muscovite] USGS Professional Paper 255: 333-338. +2 other references
ⓘ Pelton's Quarry	[Muscovite] Januzzi et al. (1976)
New Haven County ⓘ Naugatuck	[Muscovite] Anthony Scalzi collection
Illinois Calhoun County Gilead ⓘ Maquoketa Shale	[Muscovite var: Illite] GSA Bulletin +3 other references
Maine Sagadahoc County Topsham ⓘ Fisher Quarry	[Muscovite var: Schernikite] Cliff Trebilcock collection +1 other reference
North Carolina Catawba County Hickory ⓘ Martin Marietta Quarry (Hickory Quarry)	[Muscovite] K. Wood collection
Mitchell County Spruce Pine ⓘ Chestnut Flats Mine	[Muscovite] - (2005)
Pennsylvania Delaware County Middletown Township ⓘ Sharpless' Quarry (Sharpless Quarry)	[Muscovite] Gordon (1922)
South Dakota Pennington County Keystone Mining District Keystone ⓘ Etta Mine	[Muscovite] Dana 6: 1088 +5 other references
Texas Burnet County ⓘ Cactus Jack pegmatite	[Muscovite] F Roberts

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