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Traskite Mineral Data + |
General Traskite Information |
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| (Ba,Ca)9(Fe++,Mn)2Ti2(SiO3)12(OH,Cl,F)6·6(H2O) | |||
| 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 | |||
| Ba8.5Ca0.4Sr0.1Fe2+1.5Mn2+0.5Mg0.2Ti1.8Si11.8Al0.2O29.9(OH)14.4Cl2.5F0.5 | |||
| Sanbornite-bearing metamorphic rocks along a granodiorite contact. | |||
| Approved IMA 1965 | |||
| Big Creek - Rush Creek sanbornite deposit, 5 miles NE of Trimmer, Fresno Co., California. Link to MinDat.org Location Data. | |||
| Named for John Boardman Trask (1824-1879), first state geologist of California. | |||
| ICSD 34076 | |||
| PDF 18-171 | |||
Traskite Image | |||
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Traskite Crystallography |
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| a:c = 1:0.68576 | |||
| a = 17.98, c = 12.33, Z = 3; V = 3,452.02 Den(Calc)= 3.68 | |||
| Hexagonal - Ditrigonal DipyramidalH-M Symbol (6 m2) Space Group: P 6m2 | |||
| By Intensity(I/Io): 2.96(1), 15.4(0.5), 3.51(0.4), | |||
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Physical Properties of Traskite |
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| None | |||
| Brownish red. | |||
| 3.71 | |||
| Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz). | |||
| Anhedral Grains - Granular minerals without the expression of crystal shapes | |||
| Euhedral Crystals - Occurs as well-formed crystals showing good external form. | |||
| 5 - Apatite | |||
| Vitreous (Glassy) | |||
| light reddish brown | |||
Optical Properties of Traskite |
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| colorless or pale yellow. | |||
| brownish red or brownish red. | |||
| 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 |
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| Uniaxial (-), e=1.702, w=1.714, bire=0.0120. | |||
Calculated Properties of Traskite |
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relectron=3.39 gm/cc |
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| Fermion Index = 0.09319 Boson Index = 0.90681 |
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PETraskite = 204.04 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Traskite is Not Radioactive |
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Traskite Classification |
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| 64.5.1.1 (64)Cyclosilicate Rings with Other Anions and Insular Silicate Groups | |||
| (64.5)12-membered rings with [Si2O7] dimers | |||
| (64.5.1)Dana Group | |||
| VIII/E.20-20 VIII - Silicates | |||
| VIII/E - Cyklosilicates, six rings [Si6O18]12- | |||
| VIII/E.20 - Tienshanite - Traskite series | |||
Other Traskite Information |
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| NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) | |||
| Links to other databases for Traskite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - CalTech Mineral Spectroscopy 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (MinSocAm) 8 -Handbook of Mineralogy (UofA) 9 -MinDAT 10 -MinMax(Deutsch) 11 -MinMax(English) 12 -Mineralienatlas (Deutsch) 13 -QUT Mineral Atlas 14 - WWW-MINCRYST 15 -École des Mines de Paris Search for Traskite using: Visit our Advertisers for Traskite : Translate Traskite Mineral Data : Ask about Traskite here : Print or Cut-and-Paste your Traskite Specimen Label here :
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