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
Sandy Run Monazite Placer North Tributary, Rutherford County, North Carolina, USA


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 Sandy Run Monazite Placer North Tributary, Rutherford County, North Carolina, USA
Data Identifiers
Mindat Occurrence Record ID:950403
Long-form Identifier:1:3:950403:5
GUID (UUID V4):0
Nearest other occurrences of Biotite
3.1km (1.9 miles) ⓘHinton Creek Monazite Placer SW Tributary, Rutherford County, North Carolina, USA
4.1km (2.5 miles) ⓘLax Stroud Mine, Rutherford County, North Carolina, USA
6.7km (4.2 miles) ⓘWest Branch Monazite Placer East Tributary, Rutherford County, North Carolina, USA
8.5km (5.3 miles) ⓘJoe E. Humphries Mine, Cleveland County, North Carolina, USA
9.8km (6.1 miles) ⓘWilliamson Mine, Cleveland County, North Carolina, USA
10.8km (6.7 miles) ⓘL. R. Elliot Mine, Cleveland County, North Carolina, USA
11.0km (6.8 miles) ⓘCampbell Mine, Cleveland County, North Carolina, USA
11.3km (7.0 miles) ⓘMountain Creek Monazite Placer, Rutherford County, North Carolina, USA
11.6km (7.2 miles) ⓘW. H. Bailey Deposit, Rutherford County, North Carolina, USA
13.6km (8.5 miles) ⓘChrysolite Mine, Cleveland County, North Carolina, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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