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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Anthophyllite from
Wissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA


03723180017272033917836.jpg
Anthophyllite, etc.

Wissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
03928750017504286465818.jpg
Anthophyllite

Wissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
07619520017502355134213.jpg
Anthophyllite

Wissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
00179090017501268395978.jpg
Anthophyllite

Wissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
03723180017272033917836.jpg
Anthophyllite, etc.

Wissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
00011070017502058026230.jpg
Anthophyllite

Wissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
07962190017502354943492.jpg
Anthophyllite

Wissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
04016630017501268304876.jpg
Anthophyllite

Wissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
03723180017272033917836.jpg
Anthophyllite, etc.

Wissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
03928750017504286465818.jpg
Anthophyllite

Wissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
00421280017504286469682.jpg
Anthophyllite

Wissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
01366760017506679533733.jpg
Anthophyllite

Wissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
Locality type:Valley
Classification
Species:Anthophyllite
Formula:◻Mg2Mg5(Si8O22)(OH)2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Talc1
Data
Mineral Data:Click here to view Anthophyllite data
Locality Data:Click here to view Wissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
Photo GalleryView Gallery (4 photos)
Data Identifiers
Mindat Occurrence Record ID:320617
Long-form Identifier:1:3:320617:1
GUID (UUID V4):0
Nearest other occurrences of Anthophyllite
4.2km (2.6 miles) ⓘGladwyne Quarries, Gladwyne, Lower Merion Township, Montgomery County, Pennsylvania, USA
20.5km (12.7 miles) ⓘBlue Hill, Media, Upper Providence Township, Delaware County, Pennsylvania, USA
21.2km (13.2 miles) ⓘCastle Rock, Edgemont Township, Delaware County, Pennsylvania, USA
32.1km (19.9 miles) ⓘCambridge Downs, Concord Township, Delaware County, Pennsylvania, USA
44.8km (27.8 miles) ⓘFrench Creek Mines, Saint Peters, Warwick Township, Chester County, Pennsylvania, USA
45.4km (28.2 miles) ⓘMount Cuba serpentinite, New Castle County, Delaware, USA
73.0km (45.4 miles) ⓘSherrer Quarry, C.K. Williams Quarry complex, Chestnut Hill, Easton, Northampton County, Pennsylvania, USA
73.3km (45.5 miles) ⓘWhite Barrens, Elk Township, Chester County, Pennsylvania, USA
79.4km (49.3 miles) ⓘDunlap's Quarry, West Nottingham Township, Chester County, Pennsylvania, USA
References
Gordon, Samuel G. (1922) The Mineralogy of Pennsylvania. Special Publication 1. The Academy of Natural Sciences of Philadelphia 255pp.
 
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