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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Biotite from
Scrub Oaks Mine, Mine Hill, Morris County, New Jersey, USA


Locality type:Mine
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Scrub Oaks Mine, Mine Hill, Morris County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:73391
Long-form Identifier:1:3:73391:3
GUID (UUID V4):0
Nearest other occurrences of Biotite
4.3km (2.7 miles) ⓘGove Mine [1], Mount Arlington, Morris County, New Jersey, USA
4.4km (2.7 miles) ⓘThomas Fanning's Quarry, Dover, Morris County, New Jersey, USA
4.6km (2.9 miles) ⓘAllen Mine, Rockaway Township, Morris County, New Jersey, USA
6.2km (3.9 miles) ⓘMase Mountain, Tierneys Corner, Jefferson Township, Morris County, New Jersey, USA
7.0km (4.4 miles) ⓘMount Hope Mines (Mt Hope Mines), Mount Hope, Rockaway Township, Morris County, New Jersey, USA
10.4km (6.4 miles) ⓘUnnamed pegmatites, Wildcat Ridge Wildlife Management Area, Rockaway Township, Morris County, New Jersey, USA
11.6km (7.2 miles) ⓘByram Crushed Stone Quarry (Tilcon Byram Quarry), Byram Township, Sussex County, New Jersey, USA
11.9km (7.4 miles) ⓘBeach Glen Mines (Beach Glenn Mine), Hibernia, Rockaway Township, Morris County, New Jersey, USA
12.9km (8.0 miles) ⓘPanther Hill Granite Co. Quarry, Whitehall, Byram Township, Sussex County, New Jersey, USA
13.0km (8.1 miles) ⓘBEMCO prospect (Charlotte Mine), Cranberry Lake, Byram Township, Sussex County, New Jersey, USA
References
 
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