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Tritomite-(Ce) Mineral Data
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General Tritomite-(Ce) Information
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 Chemical Formula: |
(Ce,La,Ca,Y,Th)5(Si,B)3(O,OH,F)13 |
| Composition: |
Molecular Weight = 787.79 gm |
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Calcium 10.17 % Ca 14.24 % CaO |
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Lanthanum 17.63 % La 20.68 % La2O3 |
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Cerium 26.68 % Ce 31.25 % Ce2O3 |
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Yttrium 3.95 % Y 5.02 % Y2O3 |
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Thorium 4.42 % Th 5.03 % ThO2 |
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Silicon 8.91 % Si 19.07 % SiO2 |
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Boron 0.69 % B 2.21 % B2O3 |
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Hydrogen 0.38 % H 3.43 % H2O |
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Oxygen 22.34 % O |
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Fluorine 4.82 % F 4.82 % F |
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- %
F -2.03 % -O=F2 |
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______ ______ |
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100.00 % 103.71 % = TOTAL OXIDE |
| Empirical Formula: |
5(Ce0.3)5(Ca0.4)5(La0.2)5(Y0.07)5(Th0.03)Si2.5B0.5O8(OH)3F2 |
| Environment: |
Nepheline Syenite. |
| IMA Status: |
Valid Species (Pre-IMA) 1849 |
| Locality: |
Laven Island, Langesundfiord district, near Brevik, southern Norway. Link to MinDat.org Location Data. |
| Name Origin: |
Named from the Greek for "three" and "to cut," in allusion to the trihedral cavities left in the host rock by the crystals. |
| Name Pronunciation: |
Tritomite-(Ce) + Pronunciation  |
| Synonym: |
Tritomite |
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