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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Calcite from
Delabole Slate Quarry, St Teath, Cornwall, England, UK


Locality type:Quarry
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Delabole Slate Quarry, St Teath, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:2590
Long-form Identifier:1:3:2590:4
GUID (UUID V4):0
Nearest other occurrences of Calcite
2.4km (1.5 miles) ⓘPrince of Wales Quarry (North Delabole Quarry), Tintagel, Cornwall, England, UK
4.7km (2.9 miles) ⓘOld Treburgett Mine, St Teath, Cornwall, England, UK
10.9km (6.8 miles) ⓘPort Quin Mine, Port Quin, St Minver, Cornwall, England, UK
16.7km (10.4 miles) ⓘTreburland Manganese Mine (Treburland manganese deposits), Altarnun, Cornwall, England, UK
23.8km (14.8 miles) ⓘTerrace Hill Quarry, Lostwithiel, Cornwall, England, UK
23.9km (14.8 miles) ⓘSouth Caradon Mine, Caradon Hill, St Cleer, Cornwall, England, UK
24.7km (15.3 miles) ⓘSilver Vein Mine (Beacon Hill Mine; Wheal Fortescue), Lostwithiel, Cornwall, England, UK
27.5km (17.1 miles) ⓘHerodsfoot Mine (North Herodsfoot Mine), Lanreath, Cornwall, England, UK
27.9km (17.3 miles) ⓘSouth Herodsfoot Mine, Duloe, Cornwall, England, UK
28.2km (17.5 miles) ⓘWheal Treweatha, Menheniot, Cornwall, England, UK
References
Hogg, Thomas (1825) A Manual of Mineralogy - In which is shown how much Cornwall contributes to the illustration of the science. W. Polybank High Cross, Truro.
Hall, Townshend M. (1868) The Mineralogist's Directory: or, a guide to the Principal Mineral Localities in the United Kingdom of Great Britain and Ireland. Edward Stanford.
Collins, J. H. (1871) A Handbook to the Mineralogy of Cornwall and Devon. Heard and Sons, Truro.
 
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