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Gloucester, Essex Co., Massachusetts, USA
Latitude: 42°36'57"N
Longitude: 70°39'43"W
Longitude: 70°39'43"W
Area granite quarries and other bedrock exposures. Plutonic rocks of Cape Ann include gabbro, foidal syenite, alkali-feldspar syenite and alkali-feldspar granite. Pegmatites and miarolitic cavities are associated with the granite.
Mineral List
Mineral list contains entries from the region specified including sub-localities113 entries listed. 48 valid minerals.
Localities in this Region
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References
Cooke, Josiah P., Jr. (1866): On Danalite, a new Mineral Species from the Granite of Rockport, Mass. (American Journal of Science and Arts 47:73-78).
Shaler, N. S. (1888): The Geology of Cape Ann, Massachusetts. (U. S. Geological Survey Ninth Annual Report)
Sears, John Henry (1905): The Physical Geography, Geology, Mineralogy and Paleontology of Essex County.
Palache, Charles (1907): Phenacite as an Alteration Product of Danalite from Gloucester, Mass. (American Journal of Science 24:252-255).
Dennen, W. H. (1992): Bedrock geologic map of the Gloucester and Rockport Quadrangles, Essex County, Massachusetts.
Shaler, N. S. (1888): The Geology of Cape Ann, Massachusetts. (U. S. Geological Survey Ninth Annual Report)
Sears, John Henry (1905): The Physical Geography, Geology, Mineralogy and Paleontology of Essex County.
Palache, Charles (1907): Phenacite as an Alteration Product of Danalite from Gloucester, Mass. (American Journal of Science 24:252-255).
Dennen, W. H. (1992): Bedrock geologic map of the Gloucester and Rockport Quadrangles, Essex County, Massachusetts.
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