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Epididymite Mineral Data
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General Epididymite Information
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 Chemical Formula: |
NaBeSi3O7(OH) |
| Composition: |
Molecular Weight = 245.26 gm |
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Sodium 9.37 % Na 12.64 % Na2O |
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Beryllium 3.67 % Be 10.20 % BeO |
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Silicon 34.35 % Si 73.49 % SiO2 |
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Hydrogen 0.41 % H 3.67 % H2O |
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Oxygen 52.19 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
NaBe(Si3O7)(OH) |
| IMA Status: |
Valid Species (Pre-IMA) 1893 |
| Locality: |
Island of Aro, Langesundfiord, Norway. Link to MinDat.org Location Data. |
| Name Origin: |
From the Greek epi, "near" and didymos, "twin", for its dimorphous relationship with eudidymite |
| Name Pronunciation: |
Epididymite + Pronunciation  |
| Synonym: |
ICSD 2941 |
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PDF 14-64 |
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