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Biotite from
Frazer Granite Quarry, Westerly, Washington County, Rhode Island, USA


Locality type:Quarry
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Frazer Granite Quarry, Westerly, Washington County, Rhode Island, USA
Data Identifiers
Mindat Occurrence Record ID:149516
Long-form Identifier:1:3:149516:4
GUID (UUID V4):1cd23715-bb48-4b64-975d-09f04ecf20df
References
Reference Search (possible matching items)
Jacobs, Elbridge C. (1946) 1945-1946. Report of the State Geologist on the Mineral Industries of Vermont 25. Vermont State Geologist
Report (issue)
geology in 1816. Amos Eaton had surveyed Rensselaer County, N. Y., and the route of the Erie Canal; further...1839 and under C. H. Hitchcock in 1868; the Rhode Island survey, also under Jackson, in 1839; and the...and unstratified, the latter including lavas and granite, which are "of igneous origin erupted from beneath...OF THE VERMONT STATE GEOLOGIST In Troy, Orleans County, titaniferous magnetite had been discovered in...analyzed by Olmsted. Scant attention is paid to granite which "forms a line of eruptions extending from
 
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