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Dellaite Mineral Data

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General Dellaite Information

Help on Chemical  Formula: Chemical Formula: Ca6Si3O11(OH)2
Help on Composition: Composition: Molecular Weight = 534.73 gm
   Calcium   44.97 %  Ca   62.92 % CaO
   Silicon   15.76 %  Si   33.71 % SiO2
   Hydrogen   0.38 %  H     3.37 % H2O
   Oxygen    38.90 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca6Si3O11(OH)2
Help on Environment: Environment: Late-stage veins cutting a metamorphic assemblage.
Help on IMA Status: IMA Status: Approved IMA 1965
Help on Locality: Locality: Kilchoan, Ardnamurcan, Scotland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Della Martin Roy (1926-), Pennsylvania State University geochemist who first synthesized this phase.
Help on Name Pronunciation: Name Pronunciation: Dellaite Say DELLAITE
Help on Synonym: Synonym: ICSD 20148
  PDF 29-376

Dellaite Image

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  Dellaite   Rustumite

Comments: White grains of dellaite, intermixed with rustumite.
Location: Queretaro, Zacatecas, Mexico. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Dellaite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9828:1:1.8578
Help on Cell Dimensions: Cell Dimensions: a = 6.815, b = 6.934, c = 12.882, Z = 2; alpha = 90.67°, beta = 97.7°, gamma = 98.14° V = 597.13 Den(Calc)= 2.97
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.821(1), 2.551(0.8), 2.806(0.7),

Physical Properties of Dellaite

Help on Color: Color: Colorless.
Help on Density: Density: 2.94
Help on Diaphaneity: Diaphaneity: Transparent
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Dellaite

Help on Optical Data: Optical Data: NCalc= 1.64 - from Gladstone-Dale relationship (KC = 0.2137) where Ncalc=Dcalc*KC+1
NCalc= 1.63 - from Gladstone-Dale relationship (KC = 0.2137) where Ncalc=Dmeas*KC+1

Calculated Properties of Dellaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.99 gm/cc
note: Specific Gravity of Dellaite =2.98 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0081527649
Boson Index = 0.9918472351
Help on Photoelectric: Photoelectric: PEDellaite = 6.10 barns/electron
U=PEDellaite x rElectron Density= 18.22 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Dellaite is Not Radioactive

Dellaite Classification

Help on  Dana Class: Dana Class: (78)Unclassified silicates
  (78.01)possible nesosilicates
  (78.01.04)Dana Group Dellaite Ca6Si3O11(OH)2 P1 1
Help on  Strunz Class: Strunz Class: 09.BG.45 09 - SILICATES (Germanates)
  09.B - Sorosilicates
  09.BG -Sorosilicates with mixed SiO4 and Si2O7 groups;
09.BG.45 Dellaite Ca6Si3O11(OH)2 P1 1

Other Dellaite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Dellaite :
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: 09.BG.45





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