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


Locality type:Valley
Classification
Species:Talc
Formula:Mg3Si4O10(OH)2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Anthophyllite1
Data
Mineral Data:Click here to view Talc data
Locality Data:Click here to view Wissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
Data Identifiers
Mindat Occurrence Record ID:320606
Long-form Identifier:1:3:320606:5
GUID (UUID V4):0
Nearest other occurrences of Talc
4.0km (2.5 miles) ⓘPrince's Soapstone Quarry, Lafayette Station, Philadelphia County, Pennsylvania, USA
4.2km (2.6 miles) ⓘGladwyne Quarries, Gladwyne, Lower Merion Township, Montgomery County, Pennsylvania, USA
4.2km (2.6 miles) ⓘLafayette (opposite Lafayette), Lower Merion Township, Montgomery County, Pennsylvania, USA
4.6km (2.9 miles) ⓘRose's Quarry, 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
33.9km (21.1 miles) ⓘMarshall Quarry, West Goshen Township, Chester County, Pennsylvania, USA
35.8km (22.3 miles) ⓘBrinton's Quarry, Westtown Township, Chester 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
References
Gordon, Samuel G. (1922) The Mineralogy of Pennsylvania. Special Publication 1. The Academy of Natural Sciences of Philadelphia 255pp.
 
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