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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 (2023) 2. SULFIDES and SULFOSALTS (Sulfides, Selenides, Tellurides, Arsenides, Antimonides, Bismuthides, Sulfarsenites, Sulfantimonites, Sulfbismuthites, etc.) 2.G: Lead sulfosalts with a pronounced 2D architecture, their derivatives with a composite structure, and related compounds | ||||||||||||||||||
2.GA. Layered sulfosalts related to the tetradymite archetype | ||||||||||||||||||
2.GA.005. Aleksite group | ||||||||||||||||||
Kochkarite | PbBi4Te7 | trig., P3m1 | IMA 1988-030 | |||||||||||||||
Poubaite | PbBi2Se2(Te,S)2 | trig., R3m | IMA 1975-015 | |||||||||||||||
Rucklidgeite | (Bi,Pb)3Te4 | trig., R3m | IMA 1975-029 | |||||||||||||||
Aleksite | PbBi2Te2S2 | trig., P3m1 | IMA 1977-038 | |||||||||||||||
Saddlebackite | Pb2Bi2Te2S3 | hex. | IMA 1994-051 | |||||||||||||||
2.GA.010. Babkinite | ||||||||||||||||||
Babkinite | Pb2Bi2(S,Se)2 | trig., P3 or P3m1 | IMA 1994-030 | |||||||||||||||
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2.GB. Composite structures from alternating pseudohexagonal and PbS/SnS-like tetragonal layers | ||||||||||||||||||
2.GB.005. Nagyágite group | ||||||||||||||||||
005 a. Nagyagite homologous series | ||||||||||||||||||
Buckhornite | [Pb2BiS3][AuTe2] | orth., Pmmn | IMA 1988-022 | |||||||||||||||
Jaszczakite | [Bi3S3][AuS2] | orth., Pmmn | IMA 2016-077 | |||||||||||||||
Nagyágite | [Pb(Pb,Sb)S2][(Au,Te)] | mon., P21/m | FOTO | G | ||||||||||||||
005 b. Museumite | ||||||||||||||||||
Museumite | [Pb2(Pb,Sb)2S8][(Te,Au)2] | mon., P21 | IMA 2003-039 | |||||||||||||||
005 c. Kanatzidisite | ||||||||||||||||||
Kanatzidisite | [SbBiS3]2[Te2] | mon., P21/m | IMA 2023-014 | |||||||||||||||
005 d. Berryite | ||||||||||||||||||
Berryite | Cu3Ag2Pb3Bi7S16 | mon., P21/m | IMA 1965-013 | |||||||||||||||
005 e. Watkinsonite series | ||||||||||||||||||
Watkinsonite | Cu2PbBi4(Se,S)8 | mon., P21/m | IMA 1985-024 | |||||||||||||||
Luxembourgite | AgCuPbBi4Se8 | mon., P21/m | IMA 2018-154 | |||||||||||||||
Litochlebite | Ag2PbBi4Se8 | mon., P21/m | IMA 2009-036 | |||||||||||||||
2.GB.010. Cylindrite group | ||||||||||||||||||
010 a. Cylindrite type | ||||||||||||||||||
Cylindrite | FePb3Sn4Sb2S14 | tric., incomm. | FOTO | G | ||||||||||||||
Lévyclaudite | Pb8Cu3Sn7(Bi,Sb)3S28 | mon., incomm. | IMA 1989-034 | |||||||||||||||
Merelaniite | Pb4Mo4VSbS15 | tric., incomm. | IMA 2016-042 | |||||||||||||||
Abramovite | Pb2SnInBiS7 | tric., P1 | IMA 2006-016 | |||||||||||||||
010 b. Franckeite type | ||||||||||||||||||
Franckeite | Pb21.7Sn9.3Fe4.0Sb8.1S56.9 | tric. | FOTO | G | ||||||||||||||
Ramosite | Pb25.7Sn8.3Mn3.4Sb6.4S56.2 | mon., C2/m / mon., P21 | IMA 2019-099 | |||||||||||||||
Coiraite | (Pb,Sn)12.5As3Sn5FeS28 | mon. | IMA 2005-024 | |||||||||||||||
2.GB.015. Lengenbachite | ||||||||||||||||||
Lengenbachit | Ag4Cu2Pb18As12S39 | tric. | G | |||||||||||||||
2.GB.020. Cannizzarite group | ||||||||||||||||||
Cannizzarite | Pb8Bi10S23 | mon., 2 subcells | FOTO | G | ||||||||||||||
Wittite | Pb8Bi10(S,Se)23 | Q | ||||||||||||||||
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2.GC. Commensurate composite derivatives of cannizzarite | ||||||||||||||||||
2.GC.005. Junoite group | ||||||||||||||||||
Junoite | Cu2Pb3Bi8(S,Se)16 | mon., C2/m | IMA 1974-011 | |||||||||||||||
Felbertalite | Cu2Pb6Bi8S19 | mon., C2/m | FOTO | IMA 1999-042 | ||||||||||||||
Nordströmite | CuPb3Bi7(S,Se)14 | mon., P21/m | IMA 1978-073 | |||||||||||||||
Proudite | CuPb8Bi10(S,Se)23 | mon., C2/m | IMA 1975-028 | |||||||||||||||
Cannizzarite plesiotypic derivatives, with stepped layers. | ||||||||||||||||||
2.GC.010. Galenobismutite group | ||||||||||||||||||
Galenobismutite | PbBi2S4 | orth., Pnma (Pnam) | G | |||||||||||||||
Weibullite | Ag0.3Pb5.3Bi8.3(S,Se)18 | orth., Pnma (Pnam) | Rd | |||||||||||||||
Ángelaite | Cu2AgPbBiS4 | orth., Pnma | IMA 2003-064 | |||||||||||||||
Nuffieldite | Pb2.4Cu1.4Bi2.4Sb0.2S7 | orth., Pnma (Pbnm) | IMA 1967-003 | |||||||||||||||
Cannizzarite plesiotypic derivatives, with sheared layers. Ángelaite: crystal structure in Topa et al., 2010, Can. Min. 48, 145-153. | ||||||||||||||||||
2.GC.015. Neyite group | ||||||||||||||||||
Neyite | Ag2Cu6Pb25Bi26S68 | mon., C2 (?) | IMA 1968-017 | |||||||||||||||
Cuproneyite | Cu7Pb27Bi25S68 | mon., B2/m | IMA 2008-054 | |||||||||||||||
Rouxelite | Cu2HgPb22Sb28S64(O,S)2 | mon., C2/m | FOTO | IMA 2002-062 | ||||||||||||||
Boxwork derivatives of Cannizzarite. | ||||||||||||||||||
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 Classification principles: Subdivision of the Sulfide etc. subclass "2.G: Lead sulfosalts with a pronounced 2D architecture, their derivatives with a composite structure, and related compounds " is different from Strunz 9, and was adapted from the sulfosalt systematics in Moëlo et al. (2008), new: 2.GA Layered sulfosalts related to the tetradymite archetype; 2.GB Composite structures from alternating pseudohexagonal and PbS/SnS-like tetragonal layers; 2.GC Commensurate composite derivatives of cannizzarite. Further classification:
Based on Moëlo, Y. et al. (2008): Sulfosalt systematics: a review. Report of the sulfosalt sub-committee of the IMA Commission on Ore Mineralogy.- Eur. J. Mineral. 20, 7-46. To distinguish from classical Strunz numbering, on hierarchical "group" level, a numbering with 3 digits is used, like "2.GA.005. Aleksite group", instead of 2 digits (like "2.GA.05.") in the Strunz system. © Thomas Witzke (2023) |
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