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Kokchetavite Mineral Data |
General Kokchetavite Information |
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KAlSi3O8 | ||
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Molecular Weight = 278.33 gm | ||
Potassium 14.05 % K 16.92 % K2O | |||
Aluminum 9.69 % Al 18.32 % Al2O3 | |||
Silicon 30.27 % Si 64.76 % SiO2 | |||
Oxygen 45.99 % O | |||
______ ______ | |||
100.00 % 100.00 % = TOTAL OXIDE | |||
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KAlSi3O8 | ||
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Micrometer-size inclusions in clinopyroxene and garnet in a garnet-pyroxene rock. Ultrahigh pressure metastable polymorph of K-feldspar. | ||
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Approved IMA 2004 (Dana # Added) | ||
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Kumdy-Kul, Kokchetav, Kazakhstan. Link to MinDat.org Location Data. | ||
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Named for the locality. | ||
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IMA2004-011 | ||
Kokchetavite Image | |||
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Kokchetavite Crystallography |
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a:c = 1:1.48387 | ||
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a = 5.27, c = 7.82, Z = 1; V = 188.09 Den(Calc)= 2.46 | ||
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Hexagonal - Dihexagonal Dipyramidal H-M Symbol (6/m 2/m 2/m) Space Group: P 6/mmm(?) | ||
Physical Properties of Kokchetavite |
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Inclusions - Generally found as inclusions in other minerals. | ||
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Platy - Sheet forms (e.g. micas). | ||
Optical Properties of Kokchetavite |
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NCalc= 1.51 - from Gladstone-Dale relationship (KC = 0.2058) where Ncalc=Dcalc*KC+1 |
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Calculated Properties of Kokchetavite |
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Bulk Density (Electron Density)=2.44 gm/cc note: Specific Gravity of Kokchetavite =2.46 gm/cc. |
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Fermion Index = 0.01 Boson Index = 0.99 |
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PEKokchetavite = 2.85 barns/electron U=PEKokchetavite x relectron= 6.94 barns/cc. |
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GRapi = 200.97 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Kokchetavite |
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Kokchetavite Classification |
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76.01.08.01 (76)Tectosilicate Al-Si Framework | ||
(76.01)with Al-Si frameworks | |||
(76.01.08)Hexagonal Feldspars (High Pressure) | |||
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09.FA.75 09 - SILICATES (Germanates) | ||
09.F - Tektosilicates without Zeolitic H2O | |||
09.FA -Tektosilicates without additional non-tetrahedral anions, (Al,B):Si = 1:1 | |||
Other Kokchetavite Information |
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NAME( AmMin, v90, p 1228) PHYS. PROP.(AmMin, v90, p 1228) | ||
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Links to other databases for Kokchetavite : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - GeoScienceWorld 4 - Google Images 5 - Google Scholar 6 - MinDAT 7 - Mineralienatlas (Deutsch) 8 - Online Mineral Museum 9 - QUT Mineral Atlas 10 - Ruff.Info Search for Kokchetavite using: Visit our Advertisers for Kokchetavite : Ask about Kokchetavite here : Print or Cut-and-Paste your Kokchetavite Specimen Label here :
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