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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Cassiterite from
Little Duke Mine (North Tavy Mine), Gulworthy, West Devon, Devon, England, UK


Locality type:Mine
Classification
Species:Cassiterite
Formula:SnO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Cassiterite data
Locality Data:Click here to view Little Duke Mine (North Tavy Mine), Gulworthy, West Devon, Devon, England, UK
Data Identifiers
Mindat Occurrence Record ID:15253
Long-form Identifier:1:3:15253:4
GUID (UUID V4):0
Nearest other occurrences of Cassiterite
0.3km (0.2 miles) ⓘVirtuous Lady Mine, Buckland Monachorum, West Devon, Devon, England, UK
1.4km (0.9 miles) ⓘBedford Consols, Gulworthy, West Devon, Devon, England, UK
2.1km (1.3 miles) ⓘHarewood Consols, Harewood, Calstock, Cornwall, England, UK
2.6km (1.6 miles) ⓘOkel Tor Mine, Harewood, Calstock, Cornwall, England, UK
2.7km (1.7 miles) ⓘEast Wheal Russell, Gulworthy, West Devon, Devon, England, UK
3.6km (2.3 miles) ⓘRussell United Mine (incl. Wheal Russell), Gulworthy, West Devon, Devon, England, UK
3.8km (2.3 miles) ⓘWheal Franco (New Wheal Franco; Old Wheal Franco), Wheal Franco Consols, Horrabridge, West Devon, Devon, England, UK
4.0km (2.5 miles) ⓘWheal Arthur (Wheal Phoenix; Slime Veor Mine), Drakewalls, Calstock, Cornwall, England, UK
4.3km (2.7 miles) ⓘNorth Roborough Down Mine, Horrabridge, West Devon, Devon, England, UK
4.3km (2.7 miles) ⓘSouth Bedford Mine (South Gunnislake Mine; in part: South Bedford and East Gunnislake Mine), Gulworthy, West Devon, Devon, England, UK
References
Day, Harry (1999) BMS Database, British Micromount Society.
 
and/or  
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