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Melanocerite-(Ce) Mineral Data
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General Melanocerite-(Ce) Information
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 Chemical Formula: |
(Ce,Th,Ca)5(Si,B)3O12(OH,F)•n(H2O) (?) |
| Composition: |
Molecular Weight = 903.06 gm |
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Calcium 4.88 % Ca 6.83 % CaO |
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Lanthanum 10.77 % La 12.63 % La2O3 |
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Cerium 46.55 % Ce 54.52 % Ce2O3 |
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Thorium 5.14 % Th 5.85 % ThO2 |
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Silicon 6.22 % Si 13.31 % SiO2 |
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Boron 1.20 % B 3.85 % B2O3 |
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Hydrogen 0.28 % H 2.49 % H2O |
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Oxygen 23.92 % O |
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Fluorine 1.05 % F 1.05 % F |
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- %
F -0.44 % -O=F2 |
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______ ______ |
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100.00 % 100.09 % = TOTAL OXIDE |
| Empirical Formula: |
Ce3La0.7Th0.2Ca1.1Si2BO12(OH)0.5F0.5•(H2O) |
| Environment: |
Alkalic rocks and their cogenetic pegmatites. Also in metamorphosed alkalic rocks. |
| IMA Status: |
Valid Species (Pre-IMA) 1887 |
| Locality: |
Isle of Kjeo in the Langesundfiord district, southern Norway. Link to MinDat.org Location Data. |
| Name Origin: |
Named from the Greek meaning "black" and the composition (Cerium). |
| Name Pronunciation: |
Melanocerite-(Ce) + Pronunciation  |
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