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Wherryite Mineral Data

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General Wherryite Information

Help on Chemical  Formula: Chemical Formula: Pb7Cu2(SO4)4(SiO4)2(OH)2
Help on Composition: Composition: Molecular Weight = 2,243.47 gm
   Copper     8.50 %  Cu   10.64 % CuO
   Silicon    2.50 %  Si    5.36 % SiO2
   Hydrogen   0.09 %  H     0.80 % H2O
   Lead      64.65 %  Pb   69.64 % PbO
   Sulfur     5.72 %  S    14.28 % SO3
   Oxygen    18.54 %  O
            ______        ______ 
            100.00 %      100.71 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Pb7Cu3(SO4)4(SiO4)2(OH)2
Help on Environment: Environment: Found wiith other secondary lead minerals.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1950
Help on Locality: Locality: Mammoth mine, Tiger, Pinal County, Arizona, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Edgar T. Wherry (1885-1982), American mineralogist and plant ecologist.
Help on Name Pronunciation: Name Pronunciation: Wherryite + Pronunciation Say WHERRYITE
Help on Synonym: Synonym: ICSD 79171
  PDF 23-218

Wherryite Image

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Comments: Green, acicular wherryite crystals.
Location: Mammoth mine, Tiger, Pinal County, Arizona, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Wherryite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =3.5923:1:1.5797
Help on Cell Dimensions: Cell Dimensions: a = 20.789, b = 5.787, c = 9.142, Z = 2; beta = 91.24° V = 1,099.58 Den(Calc)= 6.78
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.16(1), 2.75(0.5), 3.06(0.45),

Physical Properties of Wherryite

Help on Color: Color: Yellow green, Light green, Light yellow.
Help on Density: Density: 6.45
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Massive - Granular - Common texture observed in granite and other igneous rock.
Help on Luster: Luster: Vitreous - Adamantine

Optical Properties of Wherryite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.026 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.024 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1463,KPDmeas= 0.1538,KC= 0.1498
Ncalc = 1.97 - 2.02
Help on Optical Data: Optical Data: Biaxial (-), a=1.942, b=2.01, g=2.024, bire=0.0820, 2V(Calc)=46, 2V(Meas)=50.

Calculated Properties of Wherryite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.82 gm/cc
note: Specific Gravity of Wherryite =6.78 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.14
Boson Index = 0.86
Help on Photoelectric: Photoelectric: PEWherryite =1,160.70 barns/electron
U=PEWherryite x rElectron Density=6,755.93 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Wherryite is Not Radioactive

Wherryite Classification

Help on  Dana Class: Dana Class: (32)Compound Sulfates
  (32.03)(anhydrous) with poly-anionic formula
  (32.03.03)Dana Group Wherryite Pb7Cu2(SO4)4(SiO4)2(OH)2 C 2/m 2/m
Help on  Strunz Class: Strunz Class: 07.BC.55 07 - SULFATES (SELENATES, TELLURATES)
  07.B - Sulfates (selenates, etc.) with Additional Anions, without H2O
  07.BC -With medium-sized and large cations
07.BC.55 Wherryite Pb7Cu2(SO4)4(SiO4)2(OH)2 C 2/m 2/m

Other Wherryite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Wherryite :
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 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Dana No: Strunz No: 07.BC.55





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