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
Gladwyne Quarries, Gladwyne, Lower Merion Township, Montgomery County, Pennsylvania, USA


03820010017524750078862.jpg
Talc, etc.

Gladwyne Quarries, Gladwyne, Lower Merion Township, Montgomery County, Pennsylvania, USA
06188270017524750074684.jpg
Talc, etc.

Gladwyne Quarries, Gladwyne, Lower Merion Township, Montgomery County, Pennsylvania, USA
00269250017523482603164.jpg
Talc, etc.

Gladwyne Quarries, Gladwyne, Lower Merion Township, Montgomery County, Pennsylvania, USA
06188270017524750074684.jpg
Talc, etc.

Gladwyne Quarries, Gladwyne, Lower Merion Township, Montgomery County, Pennsylvania, USA
00269250017523482603164.jpg
Talc, etc.

Gladwyne Quarries, Gladwyne, Lower Merion Township, Montgomery County, Pennsylvania, USA
06188270017524750074684.jpg
Talc, etc.

Gladwyne Quarries, Gladwyne, Lower Merion Township, Montgomery County, Pennsylvania, USA
Locality type:Quarry
Classification
Species:Talc
Formula:Mg3Si4O10(OH)2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Dolomite3
Tremolite3
Data
Mineral Data:Click here to view Talc data
Locality Data:Click here to view Gladwyne Quarries, Gladwyne, Lower Merion Township, Montgomery County, Pennsylvania, USA
Data Identifiers
Mindat Occurrence Record ID:48855
Long-form Identifier:1:3:48855:4
GUID (UUID V4):0
Nearest other occurrences of Talc
0.1km (0.1 miles) ⓘLafayette (opposite Lafayette), Lower Merion Township, Montgomery County, Pennsylvania, USA
0.3km (0.2 miles) ⓘPrince's Soapstone Quarry, Lafayette Station, Philadelphia County, Pennsylvania, USA
0.5km (0.3 miles) ⓘRose's Quarry, Gladwyne, Lower Merion Township, Montgomery County, Pennsylvania, USA
4.2km (2.6 miles) ⓘWissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
16.9km (10.5 miles) ⓘBlue Hill, Media, Upper Providence Township, Delaware County, Pennsylvania, USA
17.3km (10.8 miles) ⓘCastle Rock, Edgemont Township, Delaware County, Pennsylvania, USA
29.8km (18.5 miles) ⓘMarshall Quarry, West Goshen Township, Chester County, Pennsylvania, USA
31.9km (19.8 miles) ⓘBrinton's Quarry, Westtown Township, Chester County, Pennsylvania, USA
41.1km (25.5 miles) ⓘFrench Creek Mines, Saint Peters, Warwick Township, Chester County, Pennsylvania, USA
41.9km (26.0 miles) ⓘMount Cuba serpentinite, New Castle County, Delaware, USA
References
Topo & Geol. Survey of Penna Rpt4:90-91.
 
and/or  
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