| Classification |
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| Species: | Helvine |
| Formula: | Be3Mn42+(SiO4)3S |
| Comments: | Two 0.8mm crystals found on a single specimen associated with the other common site minerals. Crystal faces are slightly pitted with sub-vitreous luster, dusted with a small amount of sugary white alteration. Could possibly be genthelvite. |
| Habit: | tetragonal, slightly cavernous showing trigonal indentations |
| Colour: | honey-brown |
| Abundance at site: | Extremely Rare |
| Confirmation |
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| Validity: | Confirmed |
| Confirmation Methods: | Optical Analysis |
| Data |
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| Mineral Data: | Click here to view Helvine data |
| Locality Data: | Click here to view Lord Chamberlain Nursing and Rehabilitation Center (7003 Main Street; 7003 State Route 110), Stratford, Fairfield County, Connecticut, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 850343 |
| Long-form Identifier: | 1:3:850343:5 |
| GUID (UUID V4): | e010a038-882a-46ab-96ef-d7ba054823dd |
| Nearest other occurrences of Helvine |
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| 56.7km (35.2 miles) | ⓘAnderson No. 1 Mica Mine (Swanson Mine; Swanson Lithia Mine; Old Lithia Mine; Chatham Lithia Mine), East Hampton (Chatham), Middlesex County, Connecticut, USA |
| References |
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