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Jahnsite-(MnMnMn)

A valid IMA mineral species
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06015460017271928798296.jpg
Jahnsite-(MnMnMn), etc.

LinÃģpolis, Divino das Laranjeiras, Minas Gerais, Brazil
09092060017271928829812.jpg
Jahnsite-(MnMnMn), etc.

Fabulosa Mine, Larecaja Province, La Paz, Bolivia
06015460017271928798296.jpg
Jahnsite-(MnMnMn), etc.

LinÃģpolis, Divino das Laranjeiras, Minas Gerais, Brazil
09092060017271928829812.jpg
Jahnsite-(MnMnMn), etc.

Fabulosa Mine, Larecaja Province, La Paz, Bolivia
06015460017271928798296.jpg
Jahnsite-(MnMnMn), etc.

LinÃģpolis, Divino das Laranjeiras, Minas Gerais, Brazil
09092060017271928829812.jpg
Jahnsite-(MnMnMn), etc.

Fabulosa Mine, Larecaja Province, La Paz, Bolivia
Hide all sections | Show all sections

About Jahnsite-(MnMnMn)Hide

01661380017271924193753.jpg
Richard H. Jahns
Formula:
{Mn2+}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2 · 8H2O
Colour:
Brownish red
Lustre:
Vitreous
Hardness:
4
Crystal System:
Monoclinic
Name:
Named for Richard H. Jahns (1915-1983), mineralogist and pegmatite expert, Stanford University, Palo Alto, California, USA. The suffix indicates metal site occupancies.
Jahnsite Subgroup.


Unique IdentifiersHide

Mindat ID:
7118
Long-form identifier:
mindat:1:1:7118:1

Similar NamesHide

JahnsiteA synonym of Jahnsite Subgroup
Jahnsite-(CaFeFe)Valid as an unnamed mineral{Ca}{Fe2+}{Fe22+}{Fe23+}(PO4)4(OH)2 · 8H2O
Jahnsite-(CaFeMg)A valid IMA mineral species{Ca}{Fe2+}{Mg2}{Fe23+}(PO4)4(OH)2 · 8H2O
Jahnsite-(CaMgMg)Valid as an unnamed mineral{Ca}{Mg}{Mg2}{Fe23+}(PO4)4(OH)2 · 8H2O
Jahnsite-(CaMnFe)A valid IMA mineral species{Ca}{Mn2+}{Fe22+}{Fe23+}(PO4)4(OH)2 · 8H2O
Jahnsite-(CaMnMg)A valid IMA mineral species{Ca}{Mn2+}{(Mg,Fe2+)2}{Fe23+}(PO4)4(OH)2 · 8H2O
Jahnsite-(CaMnMn)A valid IMA mineral species{Ca}{Mn2+}{Mn22+}{Fe23+}(PO4)4(OH)2 · 8H2O
Jahnsite-(CaMnZn)A valid IMA mineral species{Ca}{Mn2+}{Zn2}{Fe23+}(PO4)4(OH)2 · 8H2O
Jahnsite-(MnMnFe)A valid IMA mineral species{Mn2+}{Mn2+}{Fe22+}{Fe23+}(PO4)4(OH)2 · 8H2O
Jahnsite-(MnMnMg)A valid IMA mineral species{Mn2+}{Mn2+}{Mg2}{Fe23+}(PO4)4(OH)2 · 8H2O
Jahnsite-(MnMnZn)A valid IMA mineral species{Mn2+}{Mn2+}{Zn2}{Fe23+}(PO4)4(OH)2 · 8H2O
Jahnsite-(NaFeMg)A valid IMA mineral species{Na}{Fe3+}{Mg2}{Fe23+}(PO4)4(OH)2 · 8H2O
Jahnsite-(NaMnMg)A valid IMA mineral species{(Na,Ca)}{(Mn2+,Fe3+)}{(Mg,Fe3+)2}{Fe23+}(PO4)4(OH)2 · 8H2O
Jahnsite-(NaMnMn)A valid IMA mineral species{Na}{Mn2+}{(Mn2+,Fe3+)2}{Fe23+}(PO4)4(OH)2 · 8H2O
JanositeA synonym of Copiapite
JonesiteA valid IMA mineral speciesBa4(K,Na)2Ti4Al2(Si3O9)2(SiO4)4O2 · 6H2O

Classification of Jahnsite-(MnMnMn)Hide

04249070017684452162373.jpg
The jahnsite structure archetype

The structure archetype of jahnsite group minerals, which includes the jahnsite and whiteite subgroups.

IMA Classification of Jahnsite-(MnMnMn)Hide

IMA status:
Approved
IMA status notes:
Redefined by the IMA
IMA Formula:
Mn2+Mn2+Mn2+2Fe3+2(PO4)4(OH)2·8H2O
First published:
1978
Approval history:
1978: Redefined by IMA by special procedure.
Strunz-mindat (2026):
8.DH.15

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
H : With large and medium-sized cations, (OH, etc.):RO4 < 1:1
Dana 8th ed.:
42.11.2.4

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
11 : (AB)3(XO4)2Zq·xH2O

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.

SymbolSourceReference for Standard
Jah-MnMnMnIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
JhnThe Canadian Mineralogist (2019)The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download

Physical Properties of Jahnsite-(MnMnMn)Hide

Lustre:
Vitreous
Colour:
Brownish red
Hardness:
4 on Mohs scale

Optical Data of Jahnsite-(MnMnMn)Hide

Type:
Biaxial (-)
RI values:
nα = 1.682 nβ = 1.695 nγ = 1.707
Max. Birefringence:
δ = 0.025
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 Âĩm 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.

Surface Relief:
Moderate
Dispersion:
relatively strong

Chemistry of Jahnsite-(MnMnMn)Hide

Mindat Formula:
{Mn2+}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2 · 8H2O
Element Weights:
Element% weight
O46.768 %
Mn24.706 %
P13.929 %
Fe12.557 %
H2.040 %

Calculated from ideal end-member formula.
Elements listed:
Fe, H, Mn, O, P - search for minerals with similar chemistry

Crystallography of Jahnsite-(MnMnMn)Hide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/a
Cell Parameters:
a = 15.136(1) Å, b = 7.2035(3) Å, c = 9.9876(6) Å
β = 110.361(5)°
Ratio:
a:b:c = 2.101 : 1 : 1.386
Unit Cell V:
1,020.93 ÅÂģ (Calculated from Unit Cell)
Z:
2

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
- Å()
Comments:
No published X-ray powder diffraction data.

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-? alteration and/or metamorphism
32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits
Stage 4b: Highly evolved igneous rocks>3.0
34 : Complex granite pegmatites

Type Occurrence of Jahnsite-(MnMnMn)Hide

Type Locality:
ⓘ Stewart Mine, Tourmaline Queen Mountain (Pala Mtn; Queen Mtn), Pala, Pala Mining District, San Diego County, California, USA
General Appearance of Type Material:
Deduced to exist in "salmonsite" as a mixture with hureaulite.
Place of Conservation of Type Material:
No designated type specimen.

Other Language Names for Jahnsite-(MnMnMn)Hide

Relationship of Jahnsite-(MnMnMn) to other SpeciesHide

Member of:
Jahnsite Subgroup > Jahnsite Group
Other Members of Jahnsite Subgroup:
'Jahnsite-(CaFeFe)'{Ca}{Fe2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon.
Jahnsite-(CaFeMg){Ca}{Fe2+}{Mg2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
'Jahnsite-(CaMgMg)'{Ca}{Mg}{Mg2}{Fe3+2}(PO4)4(OH)2 · 8H2O
Jahnsite-(CaMnFe){Ca}{Mn2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
Jahnsite-(CaMnMg){Ca}{Mn2+}{(Mg,Fe2+)2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
Jahnsite-(CaMnMn){Ca}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
Jahnsite-(CaMnZn){Ca}{Mn2+}{Zn2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
Jahnsite-(MnMnFe){Mn2+}{Mn2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
Jahnsite-(MnMnMg){Mn2+}{Mn2+}{Mg2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
Jahnsite-(MnMnZn){Mn2+}{Mn2+}{Zn2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
Jahnsite-(NaFeMg){Na}{Fe3+}{Mg2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
Jahnsite-(NaMnMg){(Na,Ca)}{(Mn2+,Fe3+)}{(Mg,Fe3+)2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
Jahnsite-(NaMnMn){Na}{Mn2+}{(Mn2+,Fe3+)2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
KeckiteCaMn2+(Fe3+Mn2+)Fe3+2(PO4)4(OH)3 · 7H2OMon. 2/m : P2/b

Common AssociatesHide

Associations Based on Photo Data:
4 photos of Jahnsite-(MnMnMn) associated with LibetheniteCu2(PO4)(OH)
4 photos of Jahnsite-(MnMnMn) associated with PhosphosideriteFePO4 · 2H2O
1 photo of Jahnsite-(MnMnMn) associated with TriphyliteLiFe2+PO4

Related Minerals - Strunz-mindat GroupingHide

8.DH.Thebaite-(NH4)(NH4)3Al(C2O4)(PO3OH)2(H2O)Mon. 2/m : P21/b
8.DH.Whiteite-(MnMnMn)Mn2+Mn2+Mn2+2Al2(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
8.DH.Ammoniotinsleyite(NH4)Al2(PO4)2(OH) · 2H2OMon. 2/m : P21/m
8.DH.Bergbauerite(H2O)2Mn2(Fe2Ti)(PO4)4(OH)2(H2O)10 · 4H2OOrth. mmm(2/m2/m2/m) : Pbca
8.DH.Dendoraite-(NH4)(NH4)2NaAl(C2O4)(PO3OH)2(H2O)2Mon. 2/m
8.DH.Rowleyite[Na(NH4,K)9Cl4][V5+,4+2(P,As)O8]6 · n[H2O,Na,NH4,K,Cl]Iso.
8.DH.HochleitneriteMn2Ti3(PO4)4O2(H2O)2 · 14H2OOrth. mmm(2/m2/m2/m) : Pbca
8.DH.Whiteite-(CaMnFe)CaMnFe2Al2(PO4)4(OH)2 · 8H2OMon. 2/m
8.DH.05MinyuliteKAl2(PO4)2F · 4H2OOrth. mm2 : Pba2
8.DH.10LeucophosphiteKFe3+2(PO4)2(OH) · 2H2OMon. 2/m : P21/b
8.DH.10TinsleyiteKAl2(PO4)2(OH) · 2H2OMon.
8.DH.10Spheniscidite(NH4,K)(Fe3+,Al)2(PO4)2(OH) · 2H2OMon. 2/m
8.DH.15Jahnsite-(CaMnFe){Ca}{Mn2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
8.DH.15Jahnsite-(NaMnMn){Na}{Mn2+}{(Mn2+,Fe3+)2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
8.DH.15Jahnsite-(CaMnMg){Ca}{Mn2+}{(Mg,Fe2+)2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
8.DH.15Jahnsite-(CaMnMn){Ca}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
8.DH.15Whiteite-(MnMnMg)MnMnMg2Al2(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
8.DH.15Jahnsite-(CaMnZn){Ca}{Mn2+}{Zn2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
8.DH.15Jahnsite-(MnMnMg){Mn2+}{Mn2+}{Mg2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
8.DH.15Jahnsite-(MnMnFe){Mn2+}{Mn2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
8.DH.15'Jahnsite-(CaFeFe)'{Ca}{Fe2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon.
8.DH.15Rittmannite{(Mn2+,Ca)}{Mn2+}{(Fe2+,Mn2+,Mg)2}{(Al,Fe3+)2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
8.DH.15KeckiteCaMn2+(Fe3+Mn2+)Fe3+2(PO4)4(OH)3 · 7H2OMon. 2/m : P2/b
8.DH.15Jahnsite-(NaMnMg){(Na,Ca)}{(Mn2+,Fe3+)}{(Mg,Fe3+)2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
8.DH.15'Jahnsite-(CaMgMg)'{Ca}{Mg}{Mg2}{Fe3+2}(PO4)4(OH)2 · 8H2O
8.DH.15Jahnsite-(MnMnZn){Mn2+}{Mn2+}{Zn2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
8.DH.15Whiteite-(CaMgMg)CaMg3Al2(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
8.DH.15Whiteite-(CaFeMg){Ca}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2 · 8H2OMon. 2/m : P21/b
8.DH.15Whiteite-(CaMnMg){Ca}{Mn2+}{Mg2}{Al2}(PO4)4(OH)2 · 8H2OMon. 2/m
8.DH.15Whiteite-(MnFeMg){(Mn2+,Ca)}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2 · 8H2OMon. 2/m : P21/b
8.DH.15'Kaluginite'(Mn2+,Ca)MgFe3+(PO4)2(OH) · 4H2OOrth.
8.DH.15Jahnsite-(CaFeMg){Ca}{Fe2+}{Mg2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
8.DH.15Whiteite-(CaMnMn){Ca}{Mn2+}{Mn2}{Al2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
8.DH.15Jahnsite-(NaFeMg){Na}{Fe3+}{Mg2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
8.DH.20SegeleriteCa2 Mg2 Fe3+2(PO4)4(OH)2 · 8H2OOrth. mmm(2/m2/m2/m) : Pcca
8.DH.20Lun'okite(Mn,Ca)(Mg,Fe,Mn)Al(PO4)2OH · 4H2OOrth. mmm(2/m2/m2/m) : Pbca
8.DH.20Manganosegelerite(Mn2+,Ca)(Mn2+,Fe2+,Mg)Fe3+(PO4)2(OH) · 4H2OOrth. mmm(2/m2/m2/m) : Pbca
8.DH.20WilhelmvierlingiteCaMnFe3+(PO4)2(OH) · 2H2OOrth. mmm(2/m2/m2/m) : Pbca
8.DH.20JuonniiteCaMgSc(PO4)2(OH) · 4H2OOrth. mmm(2/m2/m2/m) : Pbca
8.DH.20OveriteCaMgAl(PO4)2(OH) · 4H2OOrth. mmm(2/m2/m2/m) : Pbca
8.DH.25CalcioferriteCa4MgFe3+4(PO4)6(OH)4 · 12H2OMon. 2/m : B2/b
8.DH.25ZodaciteCa4Mn2+Fe3+4(PO4)6(OH)4 · 12H2OMon.
8.DH.25FanfaniiteCa4Mn2+Al4(PO4)6(OH)4 · 12H2OMon. 2/m : B2/b
8.DH.25KingsmountiteCa3Mn2+FeAl4(PO4)6(OH)4 · 12H2OTric. 1 : P1
8.DH.25MontgomeryiteCa4MgAl4(PO4)6(OH)4 · 12H2OMon. 2 : B2
8.DH.30PararobertsiteCa2Mn3+3(PO4)3O2 · 3H2OMon. 2/m : P21/b
8.DH.30RobertsiteCa2Mn3+3(PO4)3O2 · 3H2OMon. m : Bb
8.DH.30ArseniosideriteCa2Fe3+3(AsO4)3O2 · 3H2OMon. 2/m : B2/b
8.DH.30Sailaufite(Ca,Na,â—ŧ)2Mn3+3(AsO4)2(CO3)O2 · 3H2OMon. m : Bm
8.DH.30MitridatiteCa2Fe3+3(PO4)3O2 · 3H2OMon. 2/m : B2/b
8.DH.30KolfaniteCa2Fe3+3O2(AsO4)3 · 2H2OMon.
8.DH.35MantienneiteKMg2Al2Ti(PO4)4(OH)3 · 15H2OOrth. mmm(2/m2/m2/m) : Pbca
8.DH.35Sperlingite (H2O)K(Mn2+Fe3+)(Al2Ti)(PO4)4[O(OH)] [(H2O)9(OH)] · 4H2OMon. 2/m : P21/b
8.DH.35PaulkerriteK(Mg,Mn2+)2(Fe3+,Al,Ti,Mg)2Ti(PO4)4(OH)3 · 15H2OMon. m
8.DH.35Hydroxylbenyacarite(H2O)2Mn2(Ti2Fe)(PO4)4[O(OH)](H2O)10 · 4H2O Orth. mmm(2/m2/m2/m) : Pbca
8.DH.35MacraeiteK(H2O)Mn2(Fe2Ti)(PO4)4[O(OH)](H2O)10 · 4H2OMon. 2/m : P21/b
8.DH.35Benyacarite(H2O)2Mn2Ti2Fe3+(PO4)4(OF)(H2O)10 · 4H2OOrth. mmm(2/m2/m2/m) : Pbca
8.DH.35Fluormacraeite [(H2O)K]Mn2(Fe2Ti)(PO4)4(OF)(H2O)10 · 4H2OMon. 2/m : P21/b
8.DH.40XanthoxeniteCa4Fe3+2(PO4)4(OH)2 · 3H2OTric. 1 : P1
8.DH.45MahnertiteNaCu3(AsO4)2Cl · 5H2OTet. 4/mmm(4/m2/m2/m) : I4/mmm
8.DH.50AndyrobertsiteKCdCu5(AsO4)4(H2AsO4) · 2H2OMon. 2/m : P21/m
8.DH.50CalcioandyrobertsiteKCaCu5(AsO4)4(H2AsO4) · 2H2OMon. 2/m : P21/m
8.DH.55EnglishiteK3Na2Ca10Al15(PO4)21(OH)7 · 26H2OMon. 2/m
8.DH.60BouazzeriteBi6(Mg,Co)11Fe3+14(AsO4)18(OH)4O12 · 86H2OMon. 2/m
8.DH.65GalliskiiteCa4Al2(PO4)2F8 · 5H2OTric. 1 : P1
8.DH.70JoteiteCa2CuAl(AsO4)[AsO3(OH)]2(OH)2 · 5H2OTric. 1 : P1
8.DH.75KampeliteBa6Mg3Sc8(PO4)12(OH)6 · 7H2OOrth. mmm(2/m2/m2/m) : Pnma
8.DH.80KapundaiteNaCaFe4(PO4)4(OH)3 · 5H2OTric. 1 : P1
8.DH.85VaniniiteCa2Mn2+3Mn3+2O2(AsO4)4 · 2H2OMon. 2/m : P21/b

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.

Internet Links for Jahnsite-(MnMnMn)Hide

References for Jahnsite-(MnMnMn)Hide

Localities for Jahnsite-(MnMnMn)Hide

Showing 8 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.
Hide all sections | Show all sections

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.
Bolivia
 
  • La Paz
    • Larecaja Province
Joy Desor analyses by EDS and Raman
Brazil
 
  • Minas Gerais
    • Conselheiro Pena
      • Barra do CuietÃĐ
Baijot et al. (2014)
    • Divino das Laranjeiras
Luigi Chiappino
Morocco
 
  • DrÃĒa-Tafilalet Region
    • Ouarzazate Province
      • Amerzgane Cercle
        • Ouisselsate CaÃŊdat
Favreau (n.d.)
Poland
 
  • Lower Silesian Voivodeship
    • Świdnica County
      • Gmina Świdnica
Włodek et al. (2015)
Portugal
 
  • Guarda
    • Gouveia
      • Folgosinho
Alves (2016)
USA (TL)
 
  • California
    • San Diego County
      • Pala Mining District
        • Pala
          • Tourmaline Queen Mountain (Pala Mtn; Queen Mtn)
Moore et al. (1978)
  • Maine
    • Oxford County
      • Greenwood
        • Uncle Tom Mountain
King et al. (1994) +1 other reference
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