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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Muscovite from
Franklin Quarry, Franklin, Sussex County, New Jersey, USA


Locality type:Quarry
Classification
Species:Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Franklin Quarry, Franklin, Sussex County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:51372
Long-form Identifier:1:3:51372:6
GUID (UUID V4):0
Nearest other occurrences of Muscovite
1.1km (0.7 miles) ⓘSterling Mine, Sterling Hill, Ogdensburg, Sussex County, New Jersey, USA
2.0km (1.2 miles) ⓘFurnace Quarry, Franklin, Sussex County, New Jersey, USA
2.5km (1.6 miles) ⓘBuckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA
2.7km (1.7 miles) ⓘBuckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
2.8km (1.7 miles) ⓘFranklin Mine, Franklin, Sussex County, New Jersey, USA
3.6km (2.2 miles) ⓘMill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
8.1km (5.0 miles) ⓘLime Crest Quarry, Sparta Township, Sussex County, New Jersey, USA
11.2km (6.9 miles) ⓘMcAfee Quarry, McAfee, Vernon Township, Sussex County, New Jersey, USA
14.0km (8.7 miles) ⓘSussex nepheline-syenite sill, Libertyville, Wantage Township, Sussex County, New Jersey, USA
16.4km (10.2 miles) ⓘMase Mountain, Tierneys Corner, Jefferson Township, Morris County, New Jersey, USA
References
Betancourt, P.P. (The Picking Table, Vol. 27(2):2-10.
Yau, Yu -Chyi, Anovitz, Lawrence M., Essene, Eric J., Peacor, Donald R. (1984) Phlogopite-chlorite reaction mechanisms and physical conditions during retrograde reactions in the Marble Formation, Franklin, New Jersey. Contributions to Mineralogy and Petrology, 88 (3) 299-306 doi:10.1007/bf00380175
Dunn, Pete J. (1995) Franklin and Sterling Hill, New Jersey: The world's most magnificent mineral deposits Vol. 4. The Franklin-Ogdensburg Mineralogical Society.p.468
 
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