Mineralogy Database

Stranskiite Mineral Data

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General Stranskiite Information

Help on Chemical  Formula: Chemical Formula: Zn2Cu++(AsO4)2
Help on Composition: Composition: Molecular Weight = 472.16 gm
   Zinc     27.70 %  Zn   34.48 % ZnO
   Copper   13.46 %  Cu   16.85 % CuO
   Arsenic  31.74 %  As   48.68 % As2O5
   Oxygen   27.11 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Zn2Cu(AsO4)2
Help on Environment: Environment: Secondary mineral in the oxidized zone of a dolostone-hosted hydrothermal polymetallic ore deposit.
Help on IMA Status: IMA Status: Approved IMA 1960
Help on Locality: Locality: Tsumeb mine, Otvai, Namibia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Iwan N. Stranski (1897-1979), German chemist and physicist, Berlin, Germany.
Help on Name Pronunciation: Name Pronunciation: Stranskiite + Pronunciation Say STRANSKIITE
Help on Synonym: Synonym: ICSD 100249
  PDF 29-1422

Stranskiite Image

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Comments: Blue fibrous Stranskiite veinlets in white quartz.
Location: Tsumeb, Oshikoto, Namibia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Stranskiite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7606:1:0.7897
Help on Cell Dimensions: Cell Dimensions: a = 5.073, b = 6.669, c = 5.267, Z = 1; alpha = 109.85°, beta = 112.14°, gamma = 86.88° V = 155.02 Den(Calc)= 5.06
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.134(1), 2.788(0.8), 2.506(0.6),

Physical Properties of Stranskiite

Help on Color: Color: Cyanic blue.
Help on Density: Density: 5.23
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 4 - Fluorite

Optical Properties of Stranskiite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.012 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.019 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1651,KPDmeas= 0.16,KC= 0.162
Ncalc = 1.82 - 1.85
Help on Optical Data: Optical Data: Biaxial (-), a=1.795, b=1.842, g=1.874, bire=0.0790, 2V(Calc)=76, 2V(Meas)=80.

Calculated Properties of Stranskiite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.85 gm/cc
note: Specific Gravity of Stranskiite =5.23 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEStranskiite = 42.52 barns/electron
U=PEStranskiite x rElectron Density= 206.27 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Stranskiite is Not Radioactive

Stranskiite Classification

Help on  Dana Class: Dana Class: (38)Anhydrous Phosphates, etc
  (38.03)(A+ B++)3 (XO4)2
  (38.03.07)Dana Group Stranskiite Zn2Cu(AsO4)2 P1 1
Help on  Strunz Class: Strunz Class: 08.AB.35 08 - PHOSPHATES, ARSENATES, VANADATES
  08.A - Phosphates, etc. without additional anions, without H2O
  08.AB -With medium-sized cations
08.AB.35 Stranskiite Zn2Cu(AsO4)2 P1 1
08.AB.35 Mcbirneyite Cu3(VO4)2 P1 1

Other Stranskiite Information

Help on References: References: NAME( AntBidBlaNic5) 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 Stranskiite :
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

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Dana No: Strunz No: 08.AB.35





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