[Mineral Auctions] [Register] [Current Auctions] [Log In] [www.danweinrich.com] Dan Weinrich Auctions Specializing In Live Weekly Auctions Of Top Quality Mineral Specimens The Place To Find Great Specimens At Great Prices! General Duftite-beta InformationPbCu(AsO4)(OH) |
Molecular Weight = 426.67 gm |
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Copper 14.89 % Cu 18.64 % CuO |
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Arsenic 17.56 % As 26.93 % As2O5 |
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Hydrogen 0.24 % H 2.11 % H2O |
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Lead 48.56 % Pb 52.31 % PbO |
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Oxygen 18.75 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
PbCu(AsO4)(OH) |
Secondary mineral in the oxidized zone of hydrothermal base metal deposits. Duftite-beta (1956) is now considered a compositional intermediate in the duftite-conichalcite series |
Discredited IMA 2006 |
Tsumeb, Namibia. Link to MinDat.org Location Data. |
Named in 1920 for G. Duft, general manager of the mine at Tsumeb, Namibia. |
Duftite-beta |
Beta-duftite |
| | Duftite-beta Image
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Duftite-beta Crystallographya: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-betaGreen, Olive green, Grayish green. |
6.4 |
Translucent |
3 - Calcite |
Vitreous - Dull |
| Optical Properties of Duftite-betaCI 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 Ncalc = 1.97 - 2 Biaxial (-), a=2.04, b=2.08, g=2.1, bire=0.0600 |
| Calculated Properties of Duftite-betaBulk Density (Electron Density)=5.72 gm/cc |
note: Specific Gravity of Duftite-beta =6.60 gm/cc. Fermion Index = 0.1 |
Boson Index = 0.9 PEDuftite-beta = 879.99 barns/electron |
U=PEDuftite-beta x rElectron Density=5,036.53 barns/cc. GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Duftite-beta is Not Radioactive | Duftite-beta Classification41.05.01.04 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen |
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(41.05)where (A B)2 (XO4) Zq |
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(41.05.01)Adelite Group |
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08.BH.35 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.B - Phosphates, etc. with Additional Anions, without H2O |
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08.BH -With medium-sized and large cations, (OH,etc.):RO4 = 1:1 |
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| Other Duftite-beta InformationPHYS. 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 11 - Ruff.Info Search for Duftite-beta using: Visit our Advertisers for Duftite-beta : AA Mineral SpecimensB & L Fine Minerals Crystalarium.com Dan Weinrich Fine Minerals Dan Weinrich Auctions Dakota Matrix Desert Winds Gems and Minerals Excalibur Minerals Exceptional Minerals Fabre Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club Wrights Rock Shop 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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