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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Quartz from
Wheal Ann, Boderwennack, Wendron, Cornwall, England, UK


Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Wheal Ann, Boderwennack, Wendron, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:782296
Long-form Identifier:1:3:782296:4
GUID (UUID V4):0
Nearest other occurrences of Quartz
0.4km (0.3 miles) ⓘWheal Trumpet (Trumpet Consols), Boderwennack, Wendron, Cornwall, England, UK
0.7km (0.4 miles) ⓘRoselidden mine, Wendron, Cornwall, England, UK
1.4km (0.8 miles) ⓘWheal Roots (Poldark Mine), Trenear, Wendron, Cornwall, England, UK
2.7km (1.7 miles) ⓘSouth Wendron Mine (South Wheal Lovell; Lovell Consols), Trewennack, Wendron, Cornwall, England, UK
2.9km (1.8 miles) ⓘFatwork Mine, East Wheal Lovell (incl. Tregonebris Mine), Trewennack, Wendron, Cornwall, England, UK
3.0km (1.9 miles) ⓘBassett & Grylls Mine (Porkellis Mine; Porkellis Tin Mines; Wheal Jantar; Balwath Mine), Porkellis, Wendron, Cornwall, England, UK
3.2km (2.0 miles) ⓘGarlidna Mine, Garlidna United Mines, Porkellis, Wendron, Cornwall, England, UK
3.5km (2.2 miles) ⓘWheal Enys (Wheal Vernon), Porkellis, Wendron, Cornwall, England, UK
4.2km (2.6 miles) ⓘPolcrebo Downs Mine, Nancegollan, Crowan, Cornwall, England, UK
4.2km (2.6 miles) ⓘBalcoath, Porkellis, Wendron, Cornwall, England, UK
References
Henwood, William Jory (1843) On the Metalliferous Deposits of Cornwall and Devon. Transactions of the Royal Geological Society of Cornwall, 5. 1-386
 
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