Beaverite Mineral Data

Beaverite Mineral Data +

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General Beaverite Information

Chemical Formula:

PbCu++(Fe+++,Al)2(SO4)2(OH)6

Composition:

Molecular Weight = 662.18 gm

Aluminum 2.04 % Al 3.85 % Al₂O₃

Iron 12.65 % Fe 18.09 % Fe₂O₃

Copper 9.60 % Cu 12.01 % CuO

Hydrogen 0.91 % H 8.16 % H₂O

Lead 31.29 % Pb 33.71 % PbO

Sulfur 9.69 % S 24.18 % SO₃

Oxygen 33.83 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

PbCuFe³⁺_1.5Al_0.5(SO₄)₂(OH)₆

IMA Status:

Valid Species (Pre-IMA) 1911

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 67682

PDF 17-476

Beaverite Image

Images:

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

Images:

Beaverite

Comments: Yellow earthy coating of beaverite.
Location: Hornsilver Mine, Frisco, Beaver County, Utah, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Beaverite Crystallography

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

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 5.85(1), 3.03(0.95), 2.276(0.45),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
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B - Bonds On/Off
Help on Above

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

Physical Properties of Beaverite

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

Optical Properties of Beaverite

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.

Calculated Properties of Beaverite

Electron Density:

r_electron=4.01 gm/cc
note: r_Beaverite=4.33 gm/cc.

Fermion Index

Fermion Index = 0.07272
Boson Index = 0.92728

Photoelectric:

PE_Beaverite= 527.94 barns/electron
U=PE_Beaverite x r_electron=2,116.22 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Beaverite is Not Radioactive

Beaverite Classification

Dana Class:

30.2.5.7 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen

(30.2)where (A B)2 XO4 Zq

(30.2.5)Alunite Group (Jarosite Subgroup)

30.2.5.1 Jarosite KFe3(SO4)2(OH)6 R 3 3

30.2.5.2 Natrojarosite NaFe3(SO4)2(OH)6 R 3m 3m

30.2.5.3 Hydronium-jarosite (H3O)Fe3(SO4)2(OH)6 R 3m 3m

30.2.5.4 Ammoniojarosite (NH4)Fe3(SO4)2(OH)6 R 3m 3m

30.2.5.5 Argentojarosite AgFe3(SO4)2(OH)6 R 3m 3m

30.2.5.6 Plumbojarosite PbFe6(SO4)4(OH)12 R 3m 3 2/m

30.2.5.7 Beaverite PbCu(Fe,Al)2(SO4)2(OH)6 R 3m 3m

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

VI/B - Waterfree sulfates [SO4]2- with unfamiliar anions. mostly big cations

VI/B.11 - Alunite group, Natroalunite - Jarosite - Beaverite

VI/B.11-10 Natroalunite NaAl3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-20 Alunite KAl3(SO4)2(OH)6 R 3m, R 3m Trig

VI/B.11-30 Ammonioalunite (NH4)Al3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-40 Minamiite (Na,Ca,K)Al3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-43 Huangite Ca0.5Al3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-45 Walthierite Ba0.5Al3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-50 Natrojarosite NaFe3(SO4)2(OH)6 R 3m 3m

VI/B.11-60 Jarosite KFe3(SO4)2(OH)6 R 3 3

VI/B.11-65 Dorallcharite (Tl,K)Fe3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-70 Ammoniojarosite (NH4)Fe3(SO4)2(OH)6 R 3m 3m

VI/B.11-80 Hydronium-jarosite (H3O)Fe3(SO4)2(OH)6 R 3m 3m

VI/B.11-90 Argentojarosite AgFe3(SO4)2(OH)6 R 3m 3m

VI/B.11-100 Plumbojarosite PbFe6(SO4)4(OH)12 R 3m 3 2/m

VI/B.11-110 Osarizawaite PbCuAl2(SO4)2(OH)6 R 3m 3m

VI/B.11-120 Beaverite PbCu(Fe,Al)2(SO4)2(OH)6 R 3m 3m

Other Beaverite Information

References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

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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: