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Duftite-beta Mineral Data + |
General Duftite-beta 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. Mya form a series with conichalcite. | |||
| 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. | |||
| Beta-duftite | |||
Duftite-beta Image | |||
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Duftite-beta 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-beta |
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| Green, Olive green, Grayish green. | |||
| 6.4 | |||
| Translucent | |||
| 3 - Calcite | |||
| Vitreous - Dull | |||
Optical Properties of Duftite-beta |
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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-beta |
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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-beta = 879.99 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Duftite-beta is Not Radioactive |
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Duftite-beta Classification |
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| 41.5.1.4 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen | |||
| (41.5)where (A B)2 (XO4) Zq | |||
| (41.5.1)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-beta Information |
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| PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | |||
| Links to other databases for Duftite-beta : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas Search for Duftite-beta using: Visit our Advertisers for Duftite-beta : Translate Duftite-beta Mineral Data : Ask about Duftite-beta here : Print or Cut-and-Paste your Duftite-beta Specimen Label here :
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