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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Oligoclase from
Ahles Mine (Osmun-Robeson Mine; Pequest), Oxford Furnace, Oxford Township, Warren County, New Jersey, USA


Locality type:Mine
Classification
Species:Albite var: Oligoclase
Formula:(Na,Ca)[Al(Si,Al)Si2O8]
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Oligoclase data
Locality Data:Click here to view Ahles Mine (Osmun-Robeson Mine; Pequest), Oxford Furnace, Oxford Township, Warren County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:70997
Long-form Identifier:1:3:70997:0
GUID (UUID V4):0
Nearest other occurrences of Oligoclase
16.2km (10.0 miles) ⓘMarsh Mine, Washington Township, Morris County, New Jersey, USA
26.3km (16.3 miles) ⓘBEMCO prospect (Charlotte Mine), Cranberry Lake, Byram Township, Sussex County, New Jersey, USA
35.2km (21.9 miles) ⓘScrub Oaks Mine, Mine Hill, Morris County, New Jersey, USA
37.9km (23.6 miles) ⓘMase Mountain, Tierneys Corner, Jefferson Township, Morris County, New Jersey, USA
39.4km (24.5 miles) ⓘAllen Mine, Rockaway Township, Morris County, New Jersey, USA
46.8km (29.1 miles) ⓘBeach Glen Mines (Beach Glenn Mine), Hibernia, Rockaway Township, Morris County, New Jersey, USA
47.9km (29.8 miles) ⓘFurnace Quarry, Franklin, Sussex County, New Jersey, USA
69.9km (43.4 miles) ⓘKornerupine Group locality, Ringwood, Passaic County, New Jersey, USA
84.7km (52.6 miles) ⓘMcCrea's Quarry, Germantown, Philadelphia, Philadelphia County, Pennsylvania, USA
86.5km (53.8 miles) ⓘO'Neil Mine, Lake Mombasha, Town of Monroe, Orange County, New York, USA
References
The Iron Mines of NJ (1910), Bayley:211.
William Shirley Bayley (1941) Pre-Cambrian geology and mineral resources of the Delaware Water Gap and Easton quadrangles, New Jersey and Pennsylvania. USGS Bulletin 920
 
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