Montclair, Montclair Township, Essex Co., New Jersey, USA
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|Latitude & Longitude (WGS84):||40° 49' 33'' North , 74° 12' 33'' West|
|Latitude & Longitude (decimal):||40.8258333333, -74.2091666667|
The quarrying operations at Montclair were in the basalt of the First Watchung Mountain.
7 entries listed. 5 valid minerals.
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Manchester, J.G. (1931), The Minerals of New York City & Its Environs, New York Mineralogical Club Bulletin: 3(1): 81.