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
Prospect Park Quarry, Prospect Park, Passaic County, New Jersey, USA


Locality type:Quarry
Classification
Species:Talc
Formula:Mg3Si4O10(OH)2
Comments:The only data for talc from traprocks are from NJ Geol. Survey Bull. #64, Trap Rock Minerals of NJ, Mason, B. (1960), but the optical data used for the determination do not match talc closely enough. More study is needed.
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Talc data
Locality Data:Click here to view Prospect Park Quarry, Prospect Park, Passaic County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:78711
Long-form Identifier:1:3:78711:8
GUID (UUID V4):0
Nearest other occurrences of Talc
4.0km (2.5 miles) ⓘUpper New Street Quarry, Paterson, Passaic County, New Jersey, USA
17.6km (11.0 miles) ⓘLake Valhalla Quarry (Gordon's Crystalline Limestone Quarry), Montville Township, Morris County, New Jersey, USA
21.6km (13.4 miles) ⓘLaurel Hill, Secaucus, Hudson County, New Jersey, USA
22.5km (14.0 miles) ⓘInwood Valley (Inwood), Manhattan (New York County), New York City, New York, USA
23.6km (14.7 miles) ⓘHarlem Ship Canal, Manhattan (New York County), New York City, New York, USA
25.1km (15.6 miles) ⓘMoorhead Mine (Morehead Mine), Sloatsburg, Town of Ramapo, Rockland County, New York, USA
25.1km (15.6 miles) ⓘBehring Mine (Bering Mine), Sloatsburg, Town of Ramapo, Rockland County, New York, USA
25.4km (15.8 miles) ⓘStevens Bluffs, Hoboken, Hudson County, New Jersey, USA
31.3km (19.4 miles) ⓘMorristown occurrences, Morristown, Morris County, New Jersey, USA
36.0km (22.4 miles) ⓘOssining (Sing Sing), Westchester County, New York, USA
References
NJ Geol. Survey Bull. #64, Trap Rock Mins of NJ, Mason, B. (1960)
Peters, Joseph J. (1984) Triassic Traprock Minerals of New Jersey. Rocks & Minerals, 59 (4) 157-183 doi:10.1080/00357529.1984.11764472
 
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