Locality type: | Prospect |
Classification |
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Species: | 'Biotite' (not an IMA approved species) |
Formula: | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Confirmation |
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Validity: | Believed Valid |
Data |
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Mineral Data: | Click here to view Biotite data |
Locality Data: | Click here to view Pigeon Cove diabase porphyry prospect, Rockport, Essex County, Massachusetts, USA |
Data Identifiers |
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Mindat Occurrence Record ID: | 752553 |
Long-form Identifier: | 1:3:752553:7 |
GUID (UUID V4): | ce1b3a92-3741-48bb-90e9-eaddffcaa56c |
References |
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Reference Search (possible matching items) |
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| | Report (volume) | BUL.L.ETIN 354 CHIEF COMMERCIAL GRANITES OF MASSACHUSETTS, NEW HAMPSHIRE AND RHODE ISLAND BY T. NELSON...granites and quarries............................ Massachusetts...............................................Descriptions of the granites and quarries Continued. Massachusetts Continued. Quincy....................................................................... 98 Rockport..................................................................................... 126 Rockport porphyry .................................... 139 |
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