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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Forsterite from
Brinton's Quarry, Westtown Township, Chester County, Pennsylvania, USA


Locality type:Quarry
Classification
Species:Forsterite
Formula:Mg2(SiO4)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Forsterite data
Locality Data:Click here to view Brinton's Quarry, Westtown Township, Chester County, Pennsylvania, USA
Data Identifiers
Mindat Occurrence Record ID:150545
Long-form Identifier:1:3:150545:0
GUID (UUID V4):0
Nearest other occurrences of Forsterite
14.5km (9.0 miles) ⓘWilliamson Trade School, Middletown Township, Delaware County, Pennsylvania, USA
14.6km (9.1 miles) ⓘCastle Rock, Edgemont Township, Delaware County, Pennsylvania, USA
31.6km (19.7 miles) ⓘFrench Creek Mines, Saint Peters, Warwick Township, Chester County, Pennsylvania, USA
48.3km (30.0 miles) ⓘWood's Chrome Mine, Texas, Little Britain Township, Lancaster County, Pennsylvania, USA
50.9km (31.6 miles) ⓘCedar Hill Quarry (Stoltzfuss Quarry), Fulton Township, Lancaster County, Pennsylvania, USA
53.8km (33.4 miles) ⓘLine pit (Lowe's Chromite Mine), Fulton Township, Lancaster County, Pennsylvania, USA
53.8km (33.4 miles) ⓘLine pit (Lowe's Mine), Cecil County, Maryland, USA
66.7km (41.4 miles) ⓘSafe Harbor Quarry, Safe Harbor, Conestoga Township, Lancaster County, Pennsylvania, USA
78.9km (49.1 miles) ⓘCornwall Mines (Cornwall Iron Mine), Cornwall Borough (Cornwall), Lebanon County, Pennsylvania, USA
References
Lapham, Davis M. and Geyer, Alan R. (1965), Mineral Collecting in PA: 50, 81
(1969): 52, 87.
Annotated Bibliography of Minerals New to the Pennsylvania List - 1965-1974, Reed, Juliet C., Min. Soc. of PA, Inc. (1976): 41
 
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