Dmisteinbergite Mineral Data

Dmisteinbergite Mineral Data
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General Dmisteinbergite Information

Help on Chemical Formula: Chemical Formula: CaAl2Si2O8
Help on Composition: Composition: Molecular Weight = 278.21 gm
   Calcium   14.41 %  Ca   20.16 % CaO
   Aluminum  19.40 %  Al   36.65 % Al2O3
   Silicon   20.19 %  Si   43.19 % SiO2
   Oxygen    46.01 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaAl2Si2O8
Help on Environment: Environment: Sublimate (700-900 deg C) form burning coal dump.
Help on IMA Status: IMA Status: Approved IMA 1990
Help on Locality: Locality: Kopeysk, Chelyabinsk coal basin, southern Ural mountains, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Dmitri Sergeievich Steinberg (1910-1992), Russian petrographer, Institute of Geology, Ekaterinburg, Russa.
Help on Name Pronunciation: Name Pronunciation: Dmisteinbergite + Pronunciation Say DMISTEINBERGITE
Help on Synonym: Synonym: ICSD 26486
  IMA1989-010
  PDF 31-248
 

Dmisteinbergite Image

Click Here for Larger Dmisteinbergite Image in a New Browser Window Images:
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Dmisteinbergite   Wairakite

Comments: Pearly platy crystalline dmisteinbergite with dull white wairakite on matrix.
Location: Kurumazawa, Katashina, Gumma, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Dmisteinbergite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:2.88578
Help on Cell Dimensions: Cell Dimensions: a = 5.122, c = 14.781, Z = 2; V = 335.83 Den(Calc)= 2.75
Help on Crystal System: Crystal System: Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 6/mmm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.73(1), 2.57(0.8), 2.85(0.7),
Click Here for Large Dmisteinbergite Structure Window Crystal Structure:

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Takeuchi Y , Donnay G , Acta Crystallographica , 12 (1959) p.465-470, The crystal structure of hexagonal CaAl2Si2O8

 

Physical Properties of Dmisteinbergite

Help on Cleavage: Cleavage: {???} Perfect
Help on Color: Color: Colorless.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 6 - Orthoclase
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Dmisteinbergite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.009 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.21,KC= 0.208
Ncalc = 1.57
Help on Optical Data: Optical Data: Uniaxial (+), w=1.575, e=1.58, bire=0.0050.
 

Calculated Properties of Dmisteinbergite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.73 gm/cc
note: Specific Gravity of Dmisteinbergite =2.75 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0098442021
Boson Index = 0.9901557979
Help on Photoelectric: Photoelectric: PEDmisteinbergite = 3.12 barns/electron
U=PEDmisteinbergite x rElectron Density= 8.50 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Dmisteinbergite is Not Radioactive
 

Dmisteinbergite Classification
Help on Dana Class: Dana Class: 76.01.07.01 (76)Tectosilicate Al-Si Framework
  (76.01)with Al-Si frameworks
  (76.01.07)Dana Group
 
76.01.07.01 Dmisteinbergite CaAl2Si2O8 P 6/mmm 6/m 2/m 2/m
Help on Strunz Class: Strunz Class: 09.EG.15 09 - SILICATES (Germanates)
  09.E - Phyllosilicates
  09.EG -Double nets with 6-membered and larger rings
 
09.EG.15 Dmisteinbergite CaAl2Si2O8 P 6/mmm 6/m 2/m 2/m
 

Other Dmisteinbergite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(37th List of New Min.,Min. Mag.,1996) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Dmisteinbergite :
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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Dmisteinbergite

CaAl2Si2O8
Dana No: 76.01.07.01 Strunz No: 09.EG.15
Locality:

 

Notes: