Locality type: | Quarry |
Classification |
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Species: | Amblygonite |
Formula: | LiAl(PO4)F |
Comments: | Penfield's 1879 analysis of a Branchville specimen showed an OH:F ratio of 1.02, making this specimen montebrasite as now defined. Many references are not specific to species, back then all of the massive lithium phosphate of this series was generically called "amblygonite". It is now known that the amblygonite species is incredibly uncommon even in localities which have fluorite, massive fluorapatite, and topaz. Therefore, specimens from this locality are most likely montebrasite. |
Confirmation |
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Validity: | Erroneously Reported |
Data |
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Mineral Data: | Click here to view Amblygonite data |
Locality Data: | Click here to view Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield County, Connecticut, USA |
Data Identifiers |
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Mindat Occurrence Record ID: | 770005 |
Long-form Identifier: | 1:3:770005:7 |
GUID (UUID V4): | 4d2122c3-615d-414f-a5f2-e78a87fedafc |
Nearest other occurrences of Amblygonite |
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79.3km (49.3 miles) | ⓘStrickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA |
References |
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