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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Tourmaline from
Cameron Quarry, St Agnes, Cornwall, England, UK


Locality type:Quarry
Classification
Species:'Tourmaline' (not an IMA approved species)
Formula:AD3G6(T6O18)(BO3)3X3Z
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Cassiterite1
Quartz1
Data
Mineral Data:Click here to view Tourmaline data
Locality Data:Click here to view Cameron Quarry, St Agnes, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:1753686
Long-form Identifier:1:3:1753686:8
GUID (UUID V4):0
Nearest other occurrences of Tourmaline
0.3km (0.2 miles) ⓘWheal Bungay, St Agnes, Cornwall, England, UK
0.7km (0.4 miles) ⓘWheal Coates, St Agnes, Cornwall, England, UK
0.9km (0.6 miles) ⓘTrevaunance Mine (Wheal Trevaunance), St Agnes Consols (Polberro Consols), St Agnes, Cornwall, England, UK
1.1km (0.7 miles) ⓘSeal Hole Mine, St Agnes Consols (Polberro Consols), St Agnes, Cornwall, England, UK
1.2km (0.7 miles) ⓘNorth Seal Hole Mine, St Agnes Consols (Polberro Consols), St Agnes, Cornwall, England, UK
1.4km (0.9 miles) ⓘWest Wheal Kitty (Wheal Rock), West Wheal Kitty group, St Agnes, Cornwall, England, UK
1.6km (1.0 miles) ⓘWheal Charlotte (Great Wheal Charlotte), Porthtowan, St Agnes, Cornwall, England, UK
2.1km (1.3 miles) ⓘWheal Kitty (Kitty and Penhalls United Mine; incl. Goonlaze Mine; Wheal Osborne), St Agnes, Cornwall, England, UK
2.2km (1.4 miles) ⓘPenhalls Mine, Wheal Kitty (Kitty and Penhalls United Mine; incl. Goonlaze Mine; Wheal Osborne), St Agnes, Cornwall, England, UK
3.2km (2.0 miles) ⓘLushington Cove, Porthtowan, St Agnes, Cornwall, England, UK
References
 
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