General Roggianite Information
|
 Chemical Formula: |
Ca2[Be(OH)2Al2Si4O13]•<2•5(H2O) |
| Composition: |
Molecular Weight = 540.72 gm |
| |
Calcium 14.82 % Ca 20.74 % CaO |
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Beryllium 1.67 % Be 4.63 % BeO |
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Aluminum 9.98 % Al 18.86 % Al2O3 |
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Silicon 20.78 % Si 44.45 % SiO2 |
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Hydrogen 1.27 % H 11.33 % H2O |
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Oxygen 51.49 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Ca2Be(OH)2Al2(Si4O13)•2.4(H2O) |
| IMA Status: |
Approved IMA 1969 |
| Locality: |
Type locality: in albitite dike at Alpe Rosso in Val Vigezzo about 1.5 km south of Orcesco, Novara Province, Italy. Link to MinDat.org Location Data. |
| Name Origin: |
Named after Aldo G. Roggiani, a teacher of natural sciences, who first found the mineral. |
| Name Pronunciation: |
Roggianite + Pronunciation  |
| Synonym: |
Ginzburgite |
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ICSD 71349 |
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PDF 39-366 |
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