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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Plagioclase from
Bill Willis Mine, Mitchell County, North Carolina, USA


Locality type:Mine
Classification
Species:'Plagioclase' (not an IMA approved species)
Formula:(Na,Ca)[(Si,Al)AlSi2]O8
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Plagioclase data
Locality Data:Click here to view Bill Willis Mine, Mitchell County, North Carolina, USA
Data Identifiers
Mindat Occurrence Record ID:866625
Long-form Identifier:1:3:866625:3
GUID (UUID V4):0
Nearest other occurrences of Plagioclase
0.9km (0.6 miles) ⓘLissie Smith Mine, Mitchell County, North Carolina, USA
0.9km (0.6 miles) ⓘMiller Mine, Mitchell County, North Carolina, USA
1.0km (0.6 miles) ⓘBloodworth Mine, Mitchell County, North Carolina, USA
1.3km (0.8 miles) ⓘGuy Mine, Mitchell County, North Carolina, USA
1.3km (0.8 miles) ⓘBlalock Mine, Mitchell County, North Carolina, USA
1.5km (0.9 miles) ⓘDrawbarr Mine, Mitchell County, North Carolina, USA
1.6km (1.0 miles) ⓘPeterson Mine, Mitchell County, North Carolina, USA
1.7km (1.1 miles) ⓘCalhoun Smith Mine, Mitchell County, North Carolina, USA
1.9km (1.2 miles) ⓘDeer Park Mine, Penland, Mitchell County, North Carolina, USA
1.9km (1.2 miles) ⓘAbernathy Mine, Spruce Pine, Mitchell County, North Carolina, USA
References
Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577
 
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