Beaverite Mineral Data

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

Environment:

Secondary mineral in the oxidized zone of Pb-Cu deposits.

IMA Status:

Valid Species (Pre-IMA) 1911

Locality:

Horn Silver mine, Beaver County, Utah, USA. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Beaverite + Pronunciation

Synonym:

ICSD 67682

PDF 17-476

Beaverite Image

Images:

Mottramite Beaverite

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 Pyramidal H-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),

Physical Properties of Beaverite

Color:

Yellow.

Density:

4.36

Diaphaneity:

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
Ncalc = 1.87 - 1.88

Optical Data:

Uniaxial (-), e=1.83, w=1.85, bire=0.0200.

Calculated Properties of Beaverite

Electron Density:

Bulk Density (Electron Density)=4.01 gm/cc
note: Specific Gravity of Beaverite =4.33 gm/cc.

Fermion Index:

Fermion Index = 0.07
Boson Index = 0.93

Photoelectric:

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

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Beaverite is Not Radioactive

Beaverite Classification

Dana Class:

30.02.05.07 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen

(30.02)where (A B)2 XO4 Zq

(30.02.05)Alunite Group (Jarosite Subgroup)

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

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

30.02.05.03 Hydroniumjarosite (H3O)Fe3(SO4)2(OH)6 R 3m 3m

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

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

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

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

30.02.05.08 Dorallcharite (Tl,K)Fe3(SO4)2(OH)6 R 3m 3 2/m

Strunz Class:

07.BC.10 07 - SULFATES (SELENATES, TELLURATES)

07.B - Sulfates (selenates, etc.) with Additional Anions, without H2O

07.BC -With medium-sized and large cations

07.BC.10 Alunite KAl3(SO4)2(OH)6 R 3m, R 3m Trig

07.BC.10 Ammonioalunite (NH4)Al3(SO4)2(OH)6 R 3m 3 2/m

07.BC.10 Ammoniojarosite (NH4)Fe3(SO4)2(OH)6 R 3m 3m

07.BC.10 Beaverite PbCu(Fe,Al)2(SO4)2(OH)6 R 3m 3m

07.BC.10 Argentojarosite AgFe3(SO4)2(OH)6 R 3m 3m

07.BC.10 Huangite Ca0.5Al3(SO4)2(OH)6 R 3m 3 2/m

07.BC.10 Dorallcharite (Tl,K)Fe3(SO4)2(OH)6 R 3m 3 2/m

07.BC.10 Jarosite KFe3(SO4)2(OH)6 R 3 3

07.BC.10 Hydroniumjarosite (H3O)Fe3(SO4)2(OH)6 R 3m 3m

07.BC.10 Minamiite (Na,Ca,K)Al3(SO4)2(OH)6 R 3m 3 2/m

07.BC.10 Natrojarosite NaFe3(SO4)2(OH)6 R 3m 3m

07.BC.10 Natroalunite NaAl3(SO4)2(OH)6 R 3m 3 2/m

07.BC.10 Osarizawaite PbCuAl2(SO4)2(OH)6 R 3m 3m

07.BC.10 Plumbojarosite PbFe6(SO4)4(OH)12 R 3m 3 2/m

07.BC.10 Schlossmacherite (H3O,Ca)Al3(AsO4,SO4)2(OH)6 R 3m 3 2/m

07.BC.10 Walthierite Ba0.5Al3(SO4)2(OH)6 R 3m 3 2/m

Other Beaverite Information

References:

NAME( AntBidBlaNic5) 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 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

Search for Beaverite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Beaverite :

Ask about Beaverite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Beaverite Specimen Label here :

Beaverite

PbCu++(Fe+++,Al)2(SO4)2(OH)6
Dana No: 30.02.05.07 Strunz No: 07.BC.10
Locality:

Notes:

Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.