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Traskite Mineral Data

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General Traskite Information

Help on Chemical  Formula: Chemical Formula: (Ba,Ca)9(Fe++,Mn)2Ti2(SiO3)12(OH,Cl,F)6•6(H2O)
Help on Composition: Composition: Molecular Weight = 2,552.58 gm
   Barium     45.73 %  Ba   51.06 % BaO
   Strontium   0.34 %  Sr    0.41 % SrO
   Calcium     0.63 %  Ca    0.88 % CaO
   Magnesium   0.19 %  Mg    0.32 % MgO
   Titanium    3.38 %  Ti    5.63 % TiO2
   Manganese   1.08 %  Mn    1.39 % MnO
   Aluminum    0.21 %  Al    0.40 % Al2O3
   Iron        3.28 %  Fe    4.22 % FeO
   Silicon    12.98 %  Si   27.78 % SiO2
   Hydrogen    0.57 %  H     5.08 % H2O
   Chlorine    3.47 %  Cl    3.47 % Cl
                -   %   Cl   -0.78 % -O=Cl2   
   Oxygen     27.77 %  O
   Fluorine    0.37 %  F     0.37 % F
                -   %   F    -0.16 % -O=F2    
             ______        ______ 
             100.00 %      100.06 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ba8.5Ca0.4Sr0.1Fe2+1.5Mn2+0.5Mg0.2Ti1.8Si11.8Al0.2O29.9(OH)14.4Cl2.5F0.5
Help on Environment: Environment: Sanbornite-bearing metamorphic rocks along a granodiorite contact.
Help on IMA Status: IMA Status: Approved IMA 1965
Help on Locality: Locality: Big Creek - Rush Creek sanbornite deposit, 5 miles NE of Trimmer, Fresno Co., California. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for John Boardman Trask (1824-1879), first state geologist of California.
Help on Name Pronunciation: Name Pronunciation: Traskite Say TRASKITE
Help on Synonym: Synonym: ICSD 34076
  PDF 18-171
 

Traskite Image

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  Traskite   Sanbornite

Comments: Orange translucent crystalline traskite in white sanbornite.
Location: Rush Creek, Fresno County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Traskite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.68576
Help on Cell Dimensions: Cell Dimensions: a = 17.98, c = 12.33, Z = 3; V = 3,452.02 Den(Calc)= 3.68
Help on Crystal System: Crystal System: Hexagonal - Ditrigonal Dipyramidal H-M Symbol (6 m2) Space Group: P 6m2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.96(1), 15.4(0.5), 3.51(0.4),
 

Physical Properties of Traskite

Help on Cleavage: Cleavage: None
Help on Color: Color: Brownish red.
Help on Density: Density: 3.71
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Anhedral Grains - Granular minerals without the expression of crystal shapes
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: light reddish brown
 

Optical Properties of Traskite

Help on Dichroism (e): Dichroism (e): colorless or pale yellow.
Help on Dichroism (w): Dichroism (w): brownish red or brownish red.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.014 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.022 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1924,KPDmeas= 0.1908,KC= 0.1883
Ncalc = 1.69 - 1.7
Help on Optical Data: Optical Data: Uniaxial (-), e=1.702, w=1.714, bire=0.0120.
 

Calculated Properties of Traskite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.39 gm/cc
note: Specific Gravity of Traskite =3.71 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.09
Boson Index = 0.91
Help on Photoelectric: Photoelectric: PETraskite = 204.04 barns/electron
U=PETraskite x rElectron Density= 690.92 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Traskite is Not Radioactive
 

Traskite Classification

Help on  Dana Class: Dana Class: 64.05.01.01 (64)Cyclosilicates
  (64.05)12-membered rings with [Si2O7] dimers
  (64.05.01)Dana Group
 
64.05.01.01 Traskite (Ba,Ca)9(Fe,Mn)2Ti2(SiO3)12(OH,Cl,F)6•6(H2O) P 6m2 6 m2
Help on  Strunz Class: Strunz Class: 09.CP.05 09 - SILICATES (Germanates)
  09.C - Cyclosilicates
  09.CP -12-membered and larger rings
 
09.CP.05 Traskite (Ba,Ca)9(Fe,Mn)2Ti2(SiO3)12(OH,Cl,F)6•6(H2O) P 6m2 6 m2
 

Other Traskite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Traskite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - CalTech Mineral Spectroscopy
4 - EUROmin Project
5 - Ecole des Mines de Paris
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
16 - WWW-MINCRYST

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Print or Cut-and-Paste your Traskite Specimen Label here :

Traskite

(Ba,Ca)9(Fe++,Mn)2Ti2(SiO3)12(OH,Cl,F)6•6(H2O)
Dana No: 64.05.01.01 Strunz No: 09.CP.05
Locality:

 

Notes:

 

 
   
 


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