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Kraisslite Mineral Data

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General Kraisslite Information

Help on Chemical  Formula: Chemical Formula: (Mn++,Mg)24Zn3Fe+++(As+++O3)2(As+++++O4)3(SiO4)6(OH)18
Help on Composition: Composition: Molecular Weight = 3,019.54 gm
   Magnesium   1.53 %  Mg    2.54 % MgO
   Manganese  40.03 %  Mn   51.68 % MnO
   Zinc        6.93 %  Zn    8.63 % ZnO
   Iron        1.29 %  Fe    1.85 % Fe2O3
   Silicon     5.95 %  Si   12.74 % SiO2
   Arsenic    11.66 %  As    6.55 % As2O3 / 10.28 % As2O5
   Hydrogen    0.60 %  H     5.37 % H2O
   Oxygen     32.00 %  O
             ______        ______ 
             100.00 %       99.63 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn2+22Mg1.9Zn3.2Fe3+0.7(AsO3)2(AsO4)2.7(SiO4)6.4(OH)18
Help on Environment: Environment: Secondary mineral in the zincite zone of a metamorphosed stratiform zinc deposit.
Help on IMA Status: IMA Status: Approved IMA 1978
Help on Locality: Locality: Sterling Hill mine, Ogdensburg, Sussex County, New Jersey, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Frederick Kraissl, Jr. (1899-1986) and Alice L. Kraissl (1905-1986), of Hackensack, New Jersey.
Help on Name Pronunciation: Name Pronunciation: Kraisslite + Pronunciation Say KRAISSLITE

Kraisslite Image

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Comments: Yellow crystalline kraisslite in calcite.
Location: Sterling Mine, Ogdensburg, Sussex County, New Jersey, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kraisslite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:5.33819
Help on Cell Dimensions: Cell Dimensions: a = 8.22, c = 43.88, Z = 2; V = 2,567.68 Den(Calc)= 3.91
Help on Crystal System: Crystal System: Hexagonal - Trapezohedral H-M Symbol (6 2 2) Space Group: P 6322
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.74(1), 2.194(0.55), 2.437(0.55),

Physical Properties of Kraisslite

Help on Cleavage: Cleavage: {0001} Perfect
Help on Color: Color: Copper brown, Dark copper brown.
Help on Density: Density: 3.876
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Compact - Occurs as a compact mass.
Help on Habit: Habit: Foliated - Two dimensional platy forms.
Help on Habit: Habit: Scaly - Morphology like fish scales.
Help on Hardness: Hardness: 3-4 - Calcite-Fluorite
Help on Luster: Luster: Sub Metallic
Help on Streak: Streak: golden brown

Optical Properties of Kraisslite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.022 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.013 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2059,KPDmeas= 0.2077,KC= 0.2031
Ncalc = 1.79
Help on Optical Data: Optical Data: Uniaxial (+), e=1.805.

Calculated Properties of Kraisslite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.71 gm/cc
note: Specific Gravity of Kraisslite =3.91 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0075795107
Boson Index = 0.9924204893
Help on Photoelectric: Photoelectric: PEKraisslite = 22.53 barns/electron
U=PEKraisslite x rElectron Density= 83.62 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kraisslite is Not Radioactive

Kraisslite Classification

Help on  Dana Class: Dana Class: (43)Compound Phosphates, etc.
  (43.04)(Anhydrous Compound Anions With Hydroxyl or Halogen)
  (43.04.10)Kraisslite Group Kraisslite (Mn,Mg)24Zn3Fe(AsO3)2(AsO4)3(SiO4)6(OH)18 P 6322 6 2 2 Ekatite! (Fe,Fe,Zn)12(OH)6[AsO3]6[AsO3,HOSiO3]2 P 63mc 6mm
Help on  Strunz Class: Strunz Class: 08.BE.45 08 - PHOSPHATES, ARSENATES, VANADATES
  08.B - Phosphates, etc. with Additional Anions, without H2O
  08.BE -With only medium-sized cations, (OH, etc.):RO4 > 2:1
08.BE.45 Dixenite CuMn14Fe(AsO3)5(SiO4)2(AsO4)(OH)6 R 3 3
08.BE.45 Hematolite (Mn,Mg,Al)15(AsO3)(AsO4)2(OH)23 R 3 3
08.BE.45 Kraisslite (Mn,Mg)24Zn3Fe(AsO3)2(AsO4)3(SiO4)6(OH)18 P 6322 6 2 2
08.BE.45 Mcgovernite Mn9Mg4Zn2As2Si2O17(OH)14 R 3c 3 2/m
08.BE.45 Turtmannite! (Mn,Mg)25.5[(V,As)O4]3(SiO4)3[AsO3]xO5-5x(OH)20x R 3c 3 2/m
08.BE.45 Arakiite! (Zn,Mn)(Mn,Mg)12(Fe,Al)2(AsO3)(AsO4)2(OH)23 Cc m

Other Kraisslite Information

Help on References: References: NAME( AntBidBlaNic2) 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 Kraisslite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Franklin Minerals(Dunn)
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info

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Dana No: Strunz No: 08.BE.45





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