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Modderite Mineral Data + |
General Modderite Information |
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| (Co,Fe)As | |||
| Molecular Weight = 133.08 gm | |||
| Iron 10.49 % Fe | |||
| Cobalt 33.21 % Co | |||
| Arsenic 56.30 % As | |||
| ______ | |||
| 100.00 % | |||
| Co0.75Fe2+0.25As | |||
| In heavy mineral concentrates. | |||
| Valid Species (Pre-IMA) 1924 | |||
| Modderfontein mine, Witwatersrand, Transvaal, South Africa. Link to MinDat.org Location Data. | |||
| Named for the locality. | |||
| ICSD 48026 | |||
| PDF Sep-94 | |||
Modderite Image | |||
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Modderite Crystallography |
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| a:b:c =0.5891:1:0.9016 | |||
| a = 3.458, b = 5.869, c = 5.292, Z = 4; V = 107.40 Den(Calc)= 8.23 | |||
| Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pmcn | |||
| By Intensity(I/Io): 12.1(1), 2.46(0.9), 4.48(0.8), | |||
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Mouse |
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Physical Properties of Modderite |
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| Bluish white, Steel gray. | |||
| Opaque | |||
| Granular - Generally occurs as anhedral to subhedral crystals in matrix. | |||
| Microscopic Crystals - Crystals visible only with microscopes. | |||
| 4 - Fluorite | |||
| Metallic | |||
| gray | |||
Calculated Properties of Modderite |
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relectron=7.39 gm/cc |
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| Fermion Index = 0.00222 Boson Index = 0.99778 |
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PEModderite = 55.86 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Modderite is Not Radioactive |
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Modderite Classification |
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| 2.8.18.1 (2)Sulfides - Including Selenides and Tellurides | |||
| (2.8)where Am Bn Xp, with (m+n):p=1:1 | |||
| (2.8.18)Dana Group | |||
| II/C.19-40 II - Sulfides and sulphosalts | |||
| II/C - Sulfides with metal: sulfur, selenium and tellurium = 1:1 | |||
| II/C.19 - Troilite - Pyrrhotite - Haideite series | |||
Other Modderite Information |
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| NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) | |||
| Links to other databases for Modderite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris Search for Modderite using: Visit our Advertisers for Modderite : AA Mineral SpecimensB & L Fine Minerals Crystal Vaults Dan Weinrich Fine Minerals Dan Weinrich Auctions e-Rocks Auctions Excalibur Minerals Exceptional Minerals Fabre Minerals Greenside Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club MineralsWeb Fine Minerals Rockshop.cz T G Fine Minerals Wrights Rock Shop Translate Modderite Mineral Data : Ask about Modderite here : Print or Cut-and-Paste your Modderite Specimen Label here :
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