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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Sphalerite from
Grants Mills, Cumberland, Providence County, Rhode Island, USA


Locality type:Road Cutting
Classification
Species:Sphalerite
Formula:ZnS
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Sphalerite data
Locality Data:Click here to view Grants Mills, Cumberland, Providence County, Rhode Island, USA
Data Identifiers
Mindat Occurrence Record ID:36830
Long-form Identifier:1:3:36830:2
GUID (UUID V4):0
Nearest other occurrences of Sphalerite
2.2km (1.3 miles) ⓘSneech Pond copper mines (Copper Mine Hill), Cumberland, Providence County, Rhode Island, USA
3.9km (2.4 miles) ⓘSheldonville Gold Mine (Wrentham Gold Mine), Wrentham, Norfolk County, Massachusetts, USA
7.5km (4.7 miles) ⓘLorusso Wrentham Quarry, Wrentham, Norfolk County, Massachusetts, USA
9.5km (5.9 miles) ⓘConklin Quarry, Lime Rock, Lincoln, Providence County, Rhode Island, USA
9.8km (6.1 miles) ⓘDexter Quarry (Dexter Lime Quarry), Lime Rock, Lincoln, Providence County, Rhode Island, USA
21.4km (13.3 miles) ⓘScadden Silver Mine (Uxbridge Silver Mine; Tucker Prospect), Uxbridge, Worcester County, Massachusetts, USA
22.1km (13.7 miles) ⓘInterstate 295 / US Route 6 road cuts, Johnston, Providence County, Rhode Island, USA
25.7km (16.0 miles) ⓘAggregate Industries Quarry (Bayer-Mingolla Quarry; Trimount Quarry), Ashland, Middlesex County, Massachusetts, USA
42.3km (26.3 miles) ⓘMillstone Hill Quarry, Worcester, Worcester County, Massachusetts, USA
42.4km (26.4 miles) ⓘFallon Brothers Quarry, Quincy, Norfolk County, Massachusetts, USA
References
Miller, C. E. (1971) Rhode Island Minerals and their Locations. University of Rhode Island.
Carr, Ralph L., Edwards, John O. (1986) A Field Trip in Northeastern Rhode Island. Rocks & Minerals, 61 (5) 286-289 doi:10.1080/00357529.1986.11762728
 
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