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While externally similar shapes, these two minerals are very different inside.
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Graphite from
Brookside, Mendham Township, Morris County, New Jersey, USA


Locality type:Hamlet
Classification
Species:Graphite
Formula:C
Comments:Occurs in a quartz-graphite schist.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Graphite data
Locality Data:Click here to view Brookside, Mendham Township, Morris County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:70741
Long-form Identifier:1:3:70741:3
GUID (UUID V4):0
Nearest other occurrences of Graphite
2.4km (1.5 miles) ⓘLewis Morris Park, Harding Township, Morris County, New Jersey, USA
6.0km (3.7 miles) ⓘUnnamed Graphite prospect, Mendham, Morris County, New Jersey, USA
7.2km (4.5 miles) ⓘMorristown occurrences, Morristown, Morris County, New Jersey, USA
8.4km (5.2 miles) ⓘChester graphite occurrence, Chester Township, Morris County, New Jersey, USA
8.7km (5.4 miles) ⓘEnglemann Mine, Peapack, Peapack and Gladstone Borough, Somerset County, New Jersey, USA
15.8km (9.8 miles) ⓘPottersville, Tewksbury Township, Hunterdon County, New Jersey, USA
17.0km (10.6 miles) ⓘMase Mountain, Tierneys Corner, Jefferson Township, Morris County, New Jersey, USA
17.7km (11.0 miles) ⓘFairmount, Washington Township, Morris County, New Jersey, USA
19.0km (11.8 miles) ⓘLockwood, Byram Township, Sussex County, New Jersey, USA
28.9km (18.0 miles) ⓘOak Ridge, West Milford Township, Passaic County, New Jersey, USA
References
Rutgers Univ. Bull. #5, Pt 1:194.
NJ State Geol. Ann. Rpt.(1879:153
 
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