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Perroudite Mineral Data + |
General Perroudite Information |
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| Hg5-xAg4+xS5-x(Cl,I,Br)4+x | |||
| Molecular Weight = 1,894.37 gm | |||
| Silver 22.78 % Ag | |||
| Mercury 52.94 % Hg | |||
| Sulfur 6.77 % S | |||
| Iodine 10.72 % I | |||
| Bromine 3.80 % Br | |||
| Chlorine 2.99 % Cl | |||
| ______ | |||
| 100.00 % | |||
| Hg5Ag4S4Cl1.6I1.6Br0.9 | |||
| An alteration of tennantite in sandstones and conglomerates. | |||
| Approved IMA 1992 | |||
| Cap-Garonne, Var, France. Link to MinDat.org Location Data. | |||
| Named for Pierre Perroud, Professor at Voltaire College, Geneva, Switzerland, for his work on Cap-Garonne minerals. | |||
| ICSD 202424 | |||
| PDF 42-1336 | |||
Perroudite Image | |||
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Perroudite Crystallography |
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| a:b:c =1.4284:1:0.3507 | |||
| a = 17.47, b = 12.23, c = 4.29, Z = 2; V = 916.59 Den(Calc)= 6.86 | |||
| Orthorhombic - DisphenoidalH-M Symbol (2 2 2) Space Group: P 21212 | |||
| By Intensity(I/Io): 3.012(1), 2.965(0.8), 3.945(0.6), | |||
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Mouse |
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Physical Properties of Perroudite |
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| [100] Perfect | |||
| Light red. | |||
| Transparent | |||
| Brittle - Irregular - Very brittle fracture producing irregular fragments | |||
| Acicular - Occurs as needle-like crystals. | |||
| Aggregates - Made of numerous individual crystals or clusters. | |||
| Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). | |||
| 2 - Gypsum | |||
| Vitreous - Adamantine | |||
| orange red | |||
Optical Properties of Perroudite |
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| CI calc= -0.212 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1968,KC= 0.1624 |
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| Biaxial (+), a=2.3, b=2.4, , 2V(Meas)=~70. Dispersion r > v very strong. | |||
| dark brownish red. | |||
| yellow. | |||
| brownish yellow. | |||
Calculated Properties of Perroudite |
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relectron=5.76 gm/cc |
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| Fermion Index = 0.16039 Boson Index = 0.83961 |
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PEPerroudite =1,001.26 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Perroudite is Not Radioactive |
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Perroudite Classification |
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| 2.15.5.1 (2)Sulfides - Including Selenides and Tellurides | |||
| (2.15)(Chlorides) | |||
| (2.15.5)Dana Group | |||
| II/F.13-20 II - Sulfides and sulphosalts | |||
| II/F - Sulfides with nonmetallic properties, Halogensulfides (Sulfohalides) with Mercury/Lead and related compounds | |||
| II/F.13 - Capgaronnite-Perroudite series | |||
Other Perroudite Information |
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| NAME( AntBidBlaNic1) PHYS. PROP.(Am.Min.,Vol.72,p1251-1256,1987) OPTIC PROP.(Am.Min.,Vol.72,p1251-1256,1987) | |||
| Links to other databases for Perroudite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris Search for Perroudite using: Visit our Advertisers for Perroudite : Translate Perroudite Mineral Data : Ask about Perroudite here : Print or Cut-and-Paste your Perroudite Specimen Label here :
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