Classification |
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Species: | Cronstedtite |
Formula: | Fe22+Fe3+((Si,Fe3+)2O5)(OH)4 |
Comments: | A drab greenish-brown to almost black mineral, abundantly associated with grunerite, siderite, and marcasite, was identified as chamosite. Careful restudy of X-ray data indicates cronstedtite as a better fit. |
Habit: | radial groups of flattened crystals |
Colour: | greenish-brown to almost black |
Quality for species: | Poor for species, only of interest for locality collectors. (#) |
Confirmation |
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Validity: | Believed Valid |
Data |
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Mineral Data: | Click here to view Cronstedtite data |
Locality Data: | Click here to view State Route 9 rock cuts, Haddam, Middlesex County, Connecticut, USA |
Data Identifiers |
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Mindat Occurrence Record ID: | 920671 |
Long-form Identifier: | 1:3:920671:7 |
GUID (UUID V4): | 09ce1e8d-7549-4f23-ae00-bd70b398ebb9 |
Nearest other occurrences of Cronstedtite |
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61.5km (38.2 miles) | ⓘOld Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA |
References |
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