Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Tremolite from
Cape Rosier Mine (Callahan Mine; Rosier Consolidated Mine), Brooksville, Blue Hill - Castine Mining District, Hancock County, Maine, USA


Locality type:Mine
Classification
Species:Tremolite
Formula:◻Ca2Mg5(Si8O22)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Tremolite data
Locality Data:Click here to view Cape Rosier Mine (Callahan Mine; Rosier Consolidated Mine), Brooksville, Blue Hill - Castine Mining District, Hancock County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:31426
Long-form Identifier:1:3:31426:8
GUID (UUID V4):0
Nearest other occurrences of Tremolite
5.8km (3.6 miles) ⓘTapley Mine, Brooksville, Blue Hill - Castine Mining District, Hancock County, Maine, USA
15.3km (9.5 miles) ⓘDouglass Copper Mine, Blue Hill, Blue Hill - Castine Mining District, Hancock County, Maine, USA
15.9km (9.9 miles) ⓘStewart Mine, Blue Hill, Blue Hill - Castine Mining District, Hancock County, Maine, USA
38.2km (23.7 miles) ⓘNellie Ulmer Marble Quarry, Thomaston, Knox County, Maine, USA
40.6km (25.2 miles) ⓘDragon Cement Quarry, Thomaston, Knox County, Maine, USA
49.3km (30.6 miles) ⓘSullivan Silver mines, Sullivan Mining District, Sullivan, Hancock County, Maine, USA
References
Thompson, Woodrow B., Joyner, Ronald L., Woodman, Raymond G., King, Vandall T. (1998) Bulletin (41), A Collector's Guide to Maine Mineral Localities (3rd ed.) Maine Geological Survey
 
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