Schaurteite Mineral Data

Schaurteite Mineral Data
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General Schaurteite Information

Help on Chemical Formula: Chemical Formula: Ca3Ge++++(SO4)2(OH)6•3(H2O)
Help on Composition: Composition: Molecular Weight = 541.06 gm
   Calcium    22.22 %  Ca   31.09 % CaO
   Germanium  13.42 %  Ge   19.33 % GeO2
   Hydrogen    2.24 %  H    19.98 % H2O
   Sulfur     11.85 %  S    29.60 % SO3
   Oxygen     50.27 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca3Ge(SO4)2(OH)6•3(H2O)
Help on Environment: Environment: Alteration product of Ge-bearing ores.
Help on IMA Status: IMA Status: Approved IMA 1965
Help on Locality: Locality: Tsumeb, Namibia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Werner T. Schaurte (1892-1978), South African scientist.
Help on Name Pronunciation: Name Pronunciation: Schaurteite + Pronunciation Say SCHAURTEITE
 

Schaurteite Image

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Schaurteite   Tennantite

Comments: Bright white silky fibrous schaurteite on dark tennantite.
Location: Tsumeb, Oshikoto, Namibia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species
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Schaurteite

Comments: Snow white acicular crystals of schauteite to about 1mm in a matted mass.
Location: Tsumeb mine, Tsumeb, Namibia. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

Schaurteite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:1.26721
Help on Cell Dimensions: Cell Dimensions: a = 8.525, c = 10.803, Z = 2; V = 679.93 Den(Calc)= 2.64
Help on Crystal System: Crystal System: Hexagonal - Ditrigonal DipyramidalH-M Symbol (6 m2) Space Group: P 62c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.34(1), 4.26(0.7), 2.139(0.6),
 

Physical Properties of Schaurteite

Help on Color: Color: Silky white.
Help on Density: Density: 2.65
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Silky
Help on Streak: Streak: white
 

Optical Properties of Schaurteite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.004 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2178,KPDmeas= 0.217,KC= 0.2179
Ncalc = 1.58
Help on Optical Data: Optical Data: Uniaxial (+), w=1.569, e=1.581, bire=0.0120.
 

Calculated Properties of Schaurteite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.65 gm/cc
note: Specific Gravity of Schaurteite =2.64 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PESchaurteite = 11.23 barns/electron
U=PESchaurteite x rElectron Density= 29.81 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Schaurteite is Not Radioactive
 

Schaurteite Classification
Help on Dana Class: Dana Class: 31.07.06.02 (31)Hydrated Sulfates Containing Hydroxyl or Halogen
  (31.07)where (A+ B++)2 (XO4) Zq·x(H2O)
  (31.07.06)Despujolsite Group
 
31.07.06.01 Despujolsite Ca3Mn(SO4)2(OH)6•3(H2O) P 62c 6 m2
 
31.07.06.02 Schaurteite Ca3Ge(SO4)2(OH)6•3(H2O) P 62c 6 m2
 
31.07.06.03 Fleischerite Pb3Ge(SO4)2(OH)6•3(H2O) P 63/mmc 6/m 2/m 2/m
 
31.07.06.04 Mallestigite! Pb3Sb(SO4)(AsO4)(OH)6•3(H2O) P 63 6 2 2
Help on Strunz Class: Strunz Class: 07.DF.25 07 - SULFATES (SELENATES, TELLURATES)
  07.D - Sulfates (selenates, etc.) with additional anions, with H2O
  07.DF -With large and medium-sized cations
 
07.DF.25 Despujolsite Ca3Mn(SO4)2(OH)6•3(H2O) P 62c 6 m2
 
07.DF.25 Fleischerite Pb3Ge(SO4)2(OH)6•3(H2O) P 63/mmc 6/m 2/m 2/m
 
07.DF.25 Mallestigite! Pb3Sb(SO4)(AsO4)(OH)6•3(H2O) P 63 6 2 2
 
07.DF.25 Schaurteite Ca3Ge(SO4)2(OH)6•3(H2O) P 62c 6 m2
 

Other Schaurteite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Schaurteite :
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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Schaurteite

Ca3Ge++++(SO4)2(OH)6•3(H2O)
Dana No: 31.07.06.02 Strunz No: 07.DF.25
Locality:

 

Notes: