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Fleischerite Mineral Data

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General Fleischerite Information

Help on Chemical  Formula: Chemical Formula: Pb3Ge(SO4)2(OH)6•3(H2O)
Help on Composition: Composition: Molecular Weight = 1,006.40 gm
   Germanium   7.21 %  Ge   10.39 % GeO2
   Hydrogen    0.80 %  H     7.16 % H2O
   Lead       61.76 %  Pb   66.53 % PbO
   Sulfur      6.37 %  S    15.91 % SO3
   Oxygen     23.85 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Pb3Ge(SO4)2(OH)6•(H2O)
Help on Environment: Environment: Oxidized portion of a dolostone-hosted hydrothermal germanium-bearing polymetallic ore deposit.
Help on IMA Status: IMA Status: Approved IMA 1960
Help on Locality: Locality: Tsumeb, Namibia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Michael Fleischer (1908-1998), mineralogist and geochemist, U.S. Geological Survey, Washington, D.C., USA.
Help on Name Pronunciation: Name Pronunciation: Fleischerite + Pronunciation Say FLEISCHERITE
Help on Synonym: Synonym: ICSD 4295
  PDF 29-771

Fleischerite Image

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Comments: Pale pink transparent acicular crystals of fleischerite.
Location: Tsumeb, Oshikoto, Namibia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fleischerite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.22159
Help on Cell Dimensions: Cell Dimensions: a = 8.89, c = 10.86, Z = 2; V = 743.30 Den(Calc)= 4.50
Help on Crystal System: Crystal System: Hexagonal - Dihexagonal Dipyramidal H-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.619(1), 2.635(0.8), 3.437(0.6),

Physical Properties of Fleischerite

Help on Cleavage: Cleavage: None
Help on Color: Color: White, Light pink.
Help on Density: Density: 4.2 - 4.4, Average = 4.3
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luster: Luster: Silky
Help on Streak: Streak: white

Optical Properties of Fleischerite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.118 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.069 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1692,KPDmeas= 0.1771,KC= 0.1584
Ncalc = 1.67 - 1.71
Help on Optical Data: Optical Data: Uniaxial (+), w=1.747, e=1.776, bire=0.0290.

Calculated Properties of Fleischerite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.92 gm/cc
note: Specific Gravity of Fleischerite =4.50 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.14
Boson Index = 0.86
Help on Photoelectric: Photoelectric: PEFleischerite =1,094.56 barns/electron
U=PEFleischerite x rElectron Density=4,287.34 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Fleischerite is Not Radioactive

Fleischerite Classification

Help on  Dana Class: Dana Class: (31)Hydrated Sulfates Containing Hydroxyl or Halogen
  (31.07)where (A+ B++)2 (XO4) Zq�x(H2O)
  (31.07.06)Despujolsite Group Despujolsite Ca3Mn(SO4)2(OH)6•3(H2O) P 62c 6 m2 Schaurteite Ca3Ge(SO4)2(OH)6•3(H2O) P 62c 6 m2 Fleischerite Pb3Ge(SO4)2(OH)6•3(H2O) P 63/mmc 6/m 2/m 2/m 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 Fleischerite 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 Fleischerite :
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: 07.DF.25





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