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Chayesite Mineral Data
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General Chayesite Information
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 Chemical Formula: |
K(Mg,Fe++)4Fe+++(Si12O30) |
| Composition: |
Molecular Weight = 1,040.72 gm |
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Potassium 3.76 % K 4.53 % K2O |
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Magnesium 7.01 % Mg 11.62 % MgO |
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Iron 10.73 % Fe 6.90 % FeO / 7.67 % Fe2O3 |
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Silicon 32.38 % Si 69.28 % SiO2 |
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Oxygen 46.12 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
KMg3Fe2+Fe3+Si12O30 |
| Environment: |
A late-crystallizing mineral, nonuniformly distributed in the groundmass of lamproites. |
| IMA Status: |
Approved IMA 1989 |
| Locality: |
From Moon Canyon, east of Francis, Summit Co., Utah, USA. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Felix Chayes (1916-1993) of the Geophysical Laboratory, Carnegie Institute, Washington, D.C., USA. |
| Synonym: |
ICSD 23369 |
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PDF 45-1472 |
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