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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Microcline from
Sullivan Quarry (Armetta Quarry; Copar Quarry; Westerly Granite Co. Quarry), Bradford, Westerly, Washington County, Rhode Island, USA


Locality type:Quarry
Classification
Species:Microcline
Formula:K(AlSi3O8)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Microcline data
Locality Data:Click here to view Sullivan Quarry (Armetta Quarry; Copar Quarry; Westerly Granite Co. Quarry), Bradford, Westerly, Washington County, Rhode Island, USA
Data Identifiers
Mindat Occurrence Record ID:36893
Long-form Identifier:1:3:36893:1
GUID (UUID V4):0
Nearest other occurrences of Microcline
0.3km (0.2 miles) ⓘCrumb Granite Quarry, Bradford, Westerly, Washington County, Rhode Island, USA
6.1km (3.8 miles) ⓘRedstone Granite Quarry (Cherenzia Quarry), Westerly, Washington County, Rhode Island, USA
7.0km (4.4 miles) ⓘSmith Granite quarry, Westerly, Washington County, Rhode Island, USA
9.0km (5.6 miles) ⓘWhite Rock Quarry, Westerly, Washington County, Rhode Island, USA
13.7km (8.5 miles) ⓘMoonstone Beach, South Kingstown, Washington County, Rhode Island, USA
18.8km (11.7 miles) ⓘWest Kingston, South Kingstown, Washington County, Rhode Island, USA
20.4km (12.7 miles) ⓘMasons Island Quarry, Stonington, New London County, Connecticut, USA
20.5km (12.8 miles) ⓘKingston Hill, South Kingstown, Washington County, Rhode Island, USA
21.0km (13.1 miles) ⓘMount Tom road cut, Exeter, Washington County, Rhode Island, USA
22.5km (14.0 miles) ⓘMooresfield Granite quarry, South Kingstown, Washington County, Rhode Island, USA
References
Miller, C. E. (1971) Rhode Island Minerals and their Locations. University of Rhode Island.
 
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