General Beaverite Information
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Chemical Formula: |
PbCu++(Fe+++,Al)2(SO4)2(OH)6 |
Composition: |
Molecular Weight = 662.18 gm |
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Aluminum 2.04 % Al 3.85 % Al2O3 |
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Iron 12.65 % Fe 18.09 % Fe2O3 |
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Copper 9.60 % Cu 12.01 % CuO |
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Hydrogen 0.91 % H 8.16 % H2O |
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Lead 31.29 % Pb 33.71 % PbO |
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Sulfur 9.69 % S 24.18 % SO3 |
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Oxygen 33.83 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
PbCuFe3+1.5Al0.5(SO4)2(OH)6 |
IMA Status: |
Valid Species (Pre-IMA) 1911 |
Locality: |
Link to MinDat.org Location Data. |
Synonym: |
ICSD 67682 |
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PDF 17-476 |
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Beaverite Image |
Images:
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Beaverite Mottramite
Comments: Specimen of quartz with a thick druse of green mottramite (cuprodescloizite) crystals and a scattered grouping of micro beaverite crystals (lemon yellow in color).
Location: Tsumeb Mine, Tsumeb, Namibia.
Scale: 3.3 x 2.5 cm.
© John Veevaert |
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Images:
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Beaverite Crystallography
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Axial Ratios: |
a:c = 1:2.35179 |
Cell Dimensions: |
a = 7.203, c = 16.94, Z = 3; V = 761.15 Den(Calc)= 4.33 |
Crystal System: |
Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: R 3m |
X Ray Diffraction: |
By Intensity(I/Io): 5.85(1), 3.03(0.95), 2.276(0.45), |
Crystal Structure:
Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above
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Breidenstein B , Schluter J , Gebhard G , Neues Jahrbuch fur Mineralogie, Monatshefte , 1992 (1992) p.213-220, On beaverite: new occurrence, chemical data and crystal structure, Locality: Grand Reef mine, Graham County, Arizona, USA
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Physical Properties of Beaverite
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Color: |
Yellow. |
Density: |
4.36 |
Diaphaniety: |
Transparent to Translucent |
Hardness: |
3.5-4.5 - Between Copper Penny and Fluorite-Apatite |
Luminescence: |
Non-fluorescent. |
Luster: |
Vitreous (Glassy) |
Streak: |
light yellow |
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Optical Properties of Beaverite
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Gladstone-Dale: |
CI meas= 0.04 (Good) - where the CI = (1-KPDmeas/KC) CI calc= 0.034 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.194,KPDmeas= 0.1927,KC= 0.2007 |
Optical Data: |
Uniaxial (-), e=1.83, w=1.85, bire=0.0200. |
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Calculated Properties of Beaverite
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Electron Density: |
relectron=4.01 gm/cc note: rBeaverite =4.33 gm/cc. |
Fermion Index |
Fermion Index = 0.07272 Boson Index = 0.92728 |
Photoelectric: |
PEBeaverite = 527.94 barns/electron U=PEBeaverite x relectron=2,116.22 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Beaverite is Not Radioactive |
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Beaverite Classification
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Dana Class: |
30.2.5.7 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen |
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(30.2)where (A B)2 XO4 Zq |
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(30.2.5)Alunite Group (Jarosite Subgroup) |
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30.2.5.1 Jarosite KFe3(SO4)2(OH)6 R 3 3 |
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30.2.5.2 Natrojarosite NaFe3(SO4)2(OH)6 R 3m 3m |
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30.2.5.3 Hydronium-jarosite (H3O)Fe3(SO4)2(OH)6 R 3m 3m |
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30.2.5.4 Ammoniojarosite (NH4)Fe3(SO4)2(OH)6 R 3m 3m |
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30.2.5.5 Argentojarosite AgFe3(SO4)2(OH)6 R 3m 3m |
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30.2.5.6 Plumbojarosite PbFe6(SO4)4(OH)12 R 3m 3 2/m |
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30.2.5.7 Beaverite PbCu(Fe,Al)2(SO4)2(OH)6 R 3m 3m |
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30.2.5.8 Dorallcharite (Tl,K)Fe3(SO4)2(OH)6 R 3m 3 2/m |
Strunz Class: |
VI/B.11-120 VI - Sulfates,Chromates,Molybdates and Tungstates |
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VI/B - Waterfree sulfates [SO4]2- with unfamiliar anions. mostly big cations |
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VI/B.11 - Alunite group, Natroalunite - Jarosite - Beaverite |
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VI/B.11-10 Natroalunite NaAl3(SO4)2(OH)6 R 3m 3 2/m |
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VI/B.11-20 Alunite KAl3(SO4)2(OH)6 R 3m, R 3m Trig |
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VI/B.11-30 Ammonioalunite (NH4)Al3(SO4)2(OH)6 R 3m 3 2/m |
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VI/B.11-40 Minamiite (Na,Ca,K)Al3(SO4)2(OH)6 R 3m 3 2/m |
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VI/B.11-43 Huangite Ca0.5Al3(SO4)2(OH)6 R 3m 3 2/m |
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VI/B.11-45 Walthierite Ba0.5Al3(SO4)2(OH)6 R 3m 3 2/m |
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VI/B.11-50 Natrojarosite NaFe3(SO4)2(OH)6 R 3m 3m |
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VI/B.11-60 Jarosite KFe3(SO4)2(OH)6 R 3 3 |
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VI/B.11-65 Dorallcharite (Tl,K)Fe3(SO4)2(OH)6 R 3m 3 2/m |
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VI/B.11-70 Ammoniojarosite (NH4)Fe3(SO4)2(OH)6 R 3m 3m |
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VI/B.11-80 Hydronium-jarosite (H3O)Fe3(SO4)2(OH)6 R 3m 3m |
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VI/B.11-90 Argentojarosite AgFe3(SO4)2(OH)6 R 3m 3m |
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VI/B.11-100 Plumbojarosite PbFe6(SO4)4(OH)12 R 3m 3 2/m |
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VI/B.11-110 Osarizawaite PbCuAl2(SO4)2(OH)6 R 3m 3m |
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VI/B.11-120 Beaverite PbCu(Fe,Al)2(SO4)2(OH)6 R 3m 3m |
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Other Beaverite Information
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References: |
PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
See Also: |
Links to other databases for Beaverite :
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 -École des Mines de Paris
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Print or Cut-and-Paste your Beaverite Specimen Label here :
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Beaverite
PbCu++(Fe+++,Al)2(SO4)2(OH)6
Dana No: 30.2.5.7 Strunz No: VI/B.11-120
Locality:
Notes:
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