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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Arsenopyrite from
Tregardock Mine (Tregarget Mine), Treligga, St Teath, Cornwall, England, UK


Locality type:Mine
Classification
Species:Arsenopyrite
Formula:FeAsS
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Arsenopyrite data
Locality Data:Click here to view Tregardock Mine (Tregarget Mine), Treligga, St Teath, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:612366
Long-form Identifier:1:3:612366:6
GUID (UUID V4):0
Nearest other occurrences of Arsenopyrite
1.8km (1.1 miles) ⓘBackways Cove, Trebarwith, Tintagel, Cornwall, England, UK
2.7km (1.7 miles) ⓘBarrett 's Zawn, St Teath, Cornwall, England, UK
2.8km (1.7 miles) ⓘTrebarwith Quarry, Trebarwith, Tintagel, Cornwall, England, UK
3.4km (2.1 miles) ⓘBounds Cliff, St Endellion, Cornwall, England, UK
4.4km (2.7 miles) ⓘTresungers Point (incl. Tartar Cove), St Endellion, Cornwall, England, UK
4.6km (2.8 miles) ⓘTreore Mine, St Endellion, Cornwall, England, UK
4.7km (2.9 miles) ⓘOld Treburgett Mine, St Teath, Cornwall, England, UK
8.4km (5.2 miles) ⓘGreat Onslow Consols (Great Michell Consols), St Breward, Cornwall, England, UK
15.8km (9.8 miles) ⓘPenbugle and Lancarffe Consols, Helland, Cornwall, England, UK
16.3km (10.1 miles) ⓘSouthern Merop Island, Gunver Head, Padstow, Cornwall, England, UK
References
Clayton, R. E., Spiro, B. (2000) Sulphur, carbon and oxygen isotope studies of early Variscan mineralisation and Pb-Sb vein deposits in the Cornubian orefield: implications for the scale of fluid movements during Variscan deformation. Mineralium Deposita, 35 (4) 315-331 doi:10.1007/s001260050244
 
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