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Dissakisite-(Ce) Mineral Data
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General Dissakisite-(Ce) Information
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 Chemical Formula: |
Ca(Ce,REE)(Mg,Fe++)(Al,Fe+++)2Si3O12(OH) |
| Composition: |
Molecular Weight = 599.36 gm |
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Calcium 6.69 % Ca 9.36 % CaO |
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Cerium 10.52 % Ce 12.32 % Ce2O3 |
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La,Ce,Pr,Nd,Sm, 15.62 % RE 18.22 % REE2O3 |
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Magnesium 4.46 % Mg 7.40 % MgO |
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Aluminum 5.40 % Al 10.21 % Al2O3 |
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Iron 8.39 %
Fe 5.39 % FeO / 5.99 % Fe2O3 |
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Silicon 14.06 % Si 30.07 % SiO2 |
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Hydrogen 0.17 % H 1.50 % H2O |
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Oxygen 34.70 % O |
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______ ______ |
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100.00 % 100.47 % = TOTAL OXIDE |
| Empirical Formula: |
CaCe0.45REE0.65Mg1.1Fe2+0.45Al1.2Fe3+0.45Si3O12(OH) |
| Environment: |
Formed in marble under amphibolite-facies metamorphism (600 deg C and 7 Kbar). |
| IMA Status: |
Approved IMA 1991- Dana Number Modified from 58.2.1a.5 |
| Locality: |
On the Balchen Mountain, Sor Rondane Mountains, east Antarctica. Link to MinDat.org Location Data. |
| Name Origin: |
From the Greek for "twice over," for a magnesium analog of allanite being described twice. |
| Synonym: |
ICSD 75920 |
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IMA1990-004 |
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PDF 47-1788 |
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