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Carbokentbrooksite Mineral Data
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General Carbokentbrooksite Information
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 Chemical Formula: |
(Na,[ ])12(Na,Ce)3Ca6Mn3Zr3Nb(Si25O73)(OH)3(CO3)•H2O |
| Composition: |
Molecular Weight = 3,121.55 gm |
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Potassium 0.45 % K 0.54 % K2O |
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Sodium 8.01 % Na 10.79 % Na2O |
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Strontium 1.26 % Sr 1.49 % SrO |
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Calcium 8.04 % Ca 11.25 % CaO |
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Lanthanum 1.60 % La 1.88 % La2O3 |
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Cerium 2.69 % Ce 3.15 % Ce2O3 |
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Praeseodymium 0.23 % Pr 0.26 % Pr2O3 |
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Yttrium 0.37 % Y 0.47 % Y2O3 |
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Zirconium 8.68 % Zr 11.72 % ZrO2 |
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Titanium 0.26 % Ti 0.44 % TiO2 |
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Manganese 0.97 % Mn 1.25 % MnO |
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Niobium 2.62 % Nb 3.75 % Nb2O5 |
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Silicon 22.59 % Si 48.33 % SiO2 |
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Hydrogen 0.14 % H 1.25 % H2O |
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Carbon 0.23 % C 0.83 % CO2 |
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Neodymium 0.69 % Nd 0.81 % Nd2O3 |
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Chlorine 0.31 % Cl 0.31 % Cl |
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- %
Cl -0.07 % -O=Cl2 |
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Oxygen 40.87 % O |
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______ ______ |
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100.00 % 98.46 % = TOTAL OXIDE |
| Empirical Formula: |
Na9.48Ca0.94K0.36Na1.39Sr0.45Ce0.6La0.36Nd0.15Pr0.05Ca5.32Mn2+0.55Y0.13Zr2.97Nb0.88
Ti0.17Si25.11O73.62(OH)4.34Cl0.27(CO3)0.59 |
| Environment: |
From the quartz core of a zoned pegmatite. Forms the core of a zoned crystal with zirsilite-(Ce) rim. Eudialyte group; structure determined |
| IMA Status: |
Approved IMA 2003 (Dana # Added) |
| Locality: |
Dara-i-Pioz alkaline massif, Tajikistan. Link to MinDat.org Location Data. |
| Name Origin: |
Named for it's relationship to kentbrooksite. |
| Synonym: |
IMA2002-056 |
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