Meixnerite Mineral Data

Meixnerite Mineral Data
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General Meixnerite Information

Help on Chemical Formula: Chemical Formula: Mg6Al2(OH)18•4(H2O)
Help on Composition: Composition: Molecular Weight = 577.99 gm
   Magnesium  25.23 %  Mg   41.84 % MgO
   Aluminum    9.34 %  Al   17.64 % Al2O3
   Hydrogen    4.53 %  H    40.52 % H2O
   Oxygen     60.90 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg6Al2(OH)18•4(H2O)
Help on Environment: Environment: Secondary mineral with talc in cracks of a pyrope-serpentine rock.
Help on IMA Status: IMA Status: Approved IMA 1975
Help on Locality: Locality: Ybba Persenberg, Austria. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Heinrich Herman Meixner (1908-1981), Austrian mineralogist.
Help on Name Pronunciation: Name Pronunciation: Meixnerite + Pronunciation Say MEIXNERITE
 

Meixnerite Image

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Meixnerite

Comments: Colorless crystals of meixnerite.
Location: Zeilberg Quarry, Maroldsweisach, Bavaria, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Meixnerite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:7.52716
Help on Cell Dimensions: Cell Dimensions: a = 3.0463, c = 22.93, Z = 0.375; V = 184.28 Den(Calc)= 1.95
Help on Crystal System: Crystal System: Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m
 

Physical Properties of Meixnerite

Help on Cleavage: Cleavage: {0001} Perfect
Help on Color: Color: Colorless.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Pearly
Help on Streak: Streak: white
 

Optical Properties of Meixnerite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.011 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2608,KC= 0.258
Ncalc = 1.5
Help on Optical Data: Optical Data: Uniaxial (-), e=1.5, w=1.517, bire=0.0170.
 

Calculated Properties of Meixnerite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.02 gm/cc
note: Specific Gravity of Meixnerite =1.95 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEMeixnerite = 0.94 barns/electron
U=PEMeixnerite x rElectron Density= 1.91 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Meixnerite is Not Radioactive
 

Meixnerite Classification
Help on Dana Class: Dana Class: 06.04.06.01 (06)Hydroxides and Oxides Containing Hydroxyl
  (06.04)containing multiple cations
  (06.04.06)Dana Group
 
06.04.06.01 Meixnerite Mg6Al2(OH)18•4(H2O) R 3m 3 2/m
 
06.04.06.02 Fougerite! (Fe,Mg)6Fe2(OH)18•4(H2O) R 3m 3 2/m
Help on Strunz Class: Strunz Class: 04.FL.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.F - Hydroxides (without V or U)
  04.FL -Hydroxides with H2O ± (OH); sheets of edge-sharing octahedra
 
04.FL.05 Akdalaite 5(Al2O3)•(H2O) P 63mc 6mm
 
04.FL.05 Meixnerite Mg6Al2(OH)18•4(H2O) R 3m 3 2/m
 
04.FL.05 Jamborite (Ni,Ni,Fe)(OH)2(OH,S,(H2O)) Unk Hex
 
04.FL.05 Iowaite Mg4Fe(OH)8OCl•2-4(H2O) R 3m 3 2/m
 
04.FL.05 Muskoxite Mg7Fe4O13•10(H2O) Unk (pseudo HEX-R) Trig
 
04.FL.05 Woodallite! Mg6Cr2(OH)16Cl2•4(H2O) R 3m 3 2/m
 

Other Meixnerite 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 Meixnerite :
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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Ask about Meixnerite here :
Ask-A-Mineralogist from the Mineralogical Society of America
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Rockhounds Discussion Group on Yahoo Groups
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Print or Cut-and-Paste your Meixnerite Specimen Label here :

Meixnerite

Mg6Al2(OH)18•4(H2O)
Dana No: 06.04.06.01 Strunz No: 04.FL.05
Locality:

 

Notes: