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MINERAL CLASSIFICATION / SYSTEMATIK der MINERALE
based on E.H. Nickel & M.C. Nichols (2009), H. Strunz & E.H. Nickel (2001),
revised by Thomas Witzke (2022)
7. SULFATES
(Sulfates, Selenates, Tellurates, Chromates, Molybdates, Wolframates)
7.F: Chromates
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7.FA. Without additional anions |
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7.FA.005. Tarapacaite |
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Tarapacáite | |
K2(CrO4) | |
orth., Pnam | |
FOTO | |
G |
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7.FA.010. Chromatite |
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Chromatite | |
Ca(CrO4) | |
tetr., I41/amd | |
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A |
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7.FA.015. Hashemite |
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Hashemite | |
Ba(CrO4) | |
orth., Pnma | |
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IMA 1978-006 |
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7.FA.020. Crocoite |
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Crocoite | |
Pb(CrO4) | |
mon., P21/b | |
FOTO | |
G |
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7.FB. With additional O, S, Cl |
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7.FB.005. Phoenicochroite |
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Phoenicochroite | |
Pb2O(CrO4) | |
mon., C2/m | |
FOTO | |
A |
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7.FB.010. Santanaite |
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Santanait | |
Pb11O12(CrO4) | |
hex., P6322 | |
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IMA 1971-035 |
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7.FB.015. Reynoldsite |
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Reynoldsite | |
Pb2Mn4+2O5(CrO4) | |
tric., P1 | |
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IMA 2011-051 |
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7.FB.020. Georgerobinsonite |
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Georgerobinsonite | |
Pb4(CrO4)2(OH)2FCl | |
orth., Pmmn | |
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IMA 2009-068 |
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7.FB.025. Dukeite |
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Dukeite | |
Bi3+24O25(Cr6+O4)8(OH)6·3H2O | |
trig., P31c | |
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IMA 1999-021 |
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7.FB.030. Wattersite |
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Wattersite | |
Hg1+4Hg2+O2(CrO4) | |
mon., B2/b | |
FOTO | |
IMA 1987-030 |
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7.FB.035. Deanesmithite |
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Deanesmithite | |
Hg1+2Hg2+3S2O(CrO4) | |
tric., P1 | |
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IMA 1991-001 |
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7.FB.040. Edoylerite |
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Edoylerite | |
Hg2+3S2(CrO4) | |
mon., P21/c | |
FOTO | |
IMA 1987-008 |
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7.FC. With SO4, PO4, AsO4, VO4, SiO4 |
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7.FC.005. Evanichite |
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Evanichite | |
Pb6Cr3+(CrO4)2(SO4)(OH)7FCl | |
trig., P3 | |
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IMA 2022-033 |
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7.FC.010. Vauquelinite |
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Vauquelinite | |
CuPb2(CrO4)(PO4)(OH) | |
mon., P21/n | |
FOTO | |
G |
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7.FC.015. Fornacite group |
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Fornacite | |
CuPb2(CrO4)(AsO4)(OH) | |
mon., P21/c | |
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G |
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Molybdofornacite | |
CuPb2(MoO4)(AsO4)(OH) | |
mon., P21/c | |
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IMA 1982-062 |
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7.FC.020. Iranite group |
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Raygrantite | |
ZnPb10(SO4)6(SiO4)2(OH)2 | |
tric., P1 | |
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IMA 2013-001 |
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Iranite | |
ZnPb10(CrO4)6(SiO4)2(OH)2 | |
tric., P1 | |
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A |
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Hemihedrite | |
ZnPb10(CrO4)6(SiO4)2F2 | |
tric., P1 | |
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IMA 1967-011 |
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7.FC.025. Macquartite |
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Macquartite | |
Cu2Pb7(CrO4)4(SiO4)2(OH)2 | |
mon., C2/m | |
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IMA 1979-037 |
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7.FC.030. Embreyite group |
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Embreyite | |
Pb5(CrO4)2(PO4)2·H2O | |
mon., A2/m | |
FOTO | |
IMA 1971-048 |
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Cassedanneite | |
Pb5(CrO4)2(VO4)2·H2O | |
mon., A2/m | |
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IMA 1984-063 |
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7.FD. Dichromates |
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7.FD.005. Lópezite |
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Lópezite | |
K2Cr2O7 | |
tric., P1 | |
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Rn |
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G = Grandfathered minerals: original description preceded the establishment of the CNMNC in 1959, and
generally regarded as a valid species
A or IMA No. = Minerals approved by the CNMNC
Rd = Redefinition of the mineral approved by the CNMNC
Rn = Renamed with approval by the CNMNC
Q = Questionable mineral
To distinguish from classical Strunz numbering, on hierarchical "group" level, a numbering with 3 digits is used,
like "7.FA.005. Tarapacaite", instead of 2 digits (like "7.FA.05.") in the Strunz system.
© Thomas Witzke (2022)
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