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Duftite-alpha Mineral Data + |
General Duftite-alpha Information |
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| PbCu(AsO4)(OH) | |||
| Molecular Weight = 426.67 gm | |||
| Copper 14.89 % Cu 18.64 % CuO | |||
| Arsenic 17.56 % As 26.93 % As2O5 | |||
| Hydrogen 0.24 % H 2.11 % H2O | |||
| Lead 48.56 % Pb 52.31 % PbO | |||
| Oxygen 18.75 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| PbCu(AsO4)(OH) | |||
| Secondary mineral in the oxidized zone of hydrothermal base metal deposits. | |||
| Valid Species (Pre-IMA) 1956 | |||
| Tsumeb, Namibia Link to MinDat.org Location Data. | |||
| Named in 1920 for G. Duft, general manager of the mine at Tsumeb, Namibia. | |||
Duftite-alpha Image | |||
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Duftite-alpha Crystallography |
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| a:b:c =0.8433:1:0.6512 | |||
| a = 7.768, b = 9.211, c = 5.999, Z = 4; V = 429.23 Den(Calc)= 6.60 | |||
| Orthorhombic - DisphenoidalH-M Symbol (2 2 2) Space Group: P 212121 | |||
| By Intensity(I/Io): 3.26(1), 2.65(0.8), 2.85(0.8), | |||
Physical Properties of Duftite-alpha |
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| Green, Olive green, Grayish green. | |||
| 6.4 | |||
| Translucent | |||
| 3 - Calcite | |||
| Vitreous - Dull | |||
Optical Properties of Duftite-alpha |
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| CI meas= -0.103 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.069 (Fair) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1626,KPDmeas= 0.1677,KC= 0.1521 |
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| Biaxial (-), a=2.04, b=2.08, g=2.1, bire=0.0600 | |||
Calculated Properties of Duftite-alpha |
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relectron=5.72 gm/cc |
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| Fermion Index = 0.10741 Boson Index = 0.89259 |
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PEDuftite-alpha = 879.99 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Duftite-alpha is Not Radioactive |
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Duftite-alpha Classification |
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| 41.5.2.5 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen | |||
| (41.5)where (A B)2 (XO4) Zq | |||
| (41.5.2)Dana Group | |||
| VII/B.26-80 VII - Phosphates, Arsenates and Vanadates | |||
| VII/B - Waterfree phosphates with unfamiliar anions F, Cl, O, OH. cations of medium and big size: Mg, Cu, Zn, and Ca, Na, K, Ba, Pb | |||
| VII/B.26 - Adelite - Duftite group | |||
Other Duftite-alpha Information |
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| NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | |||
| Links to other databases for Duftite-alpha : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas Search for Duftite-alpha using: Visit our Advertisers for Duftite-alpha : Translate Duftite-alpha Mineral Data : Ask about Duftite-alpha here : Print or Cut-and-Paste your Duftite-alpha Specimen Label here :
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