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Rubicline Mineral Data
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General Rubicline Information
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 Chemical Formula: |
(Rb,K)AlSi3O8 |
| Composition: |
Molecular Weight = 313.11 gm |
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Potassium 3.12 % K 3.76 % K2O |
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Rubidium 20.47 % Rb 22.39 % Rb2O |
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Aluminum 8.62 % Al 16.28 % Al2O3 |
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Silicon 26.91 % Si 57.57 % SiO2 |
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Oxygen 40.88 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Rb0.75K0.25AlSi3O8 |
| Environment: |
Found in a veinlet of rubidian microcline cutting pollucite in a rare-element-bearing granitic pegmatite. The rubidium dominant analog of microcline. |
| IMA Status: |
Approved IMA 1998 (Dana # Added) |
| Locality: |
San Piero in Campo, Elba, Italy. Link to MinDat.org Location Data. |
| Name Origin: |
The name reflects its compositional and structural attributes as the rubidium analog of microcline. |
| Name Pronunciation: |
Rubicline + Pronunciation  |
| Synonym: |
IMA1996-058 |
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