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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Erythrite from
Polgooth Mine (Old Polgooth Mine; Polgooth United Mine; Tregontrees and Old Polgooth Mine), Polgooth, St Mewan, Cornwall, England, UK


Locality type:Mine
Classification
Species:Erythrite
Formula:Co3(AsO4)2 · 8H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Erythrite data
Locality Data:Click here to view Polgooth Mine (Old Polgooth Mine; Polgooth United Mine; Tregontrees and Old Polgooth Mine), Polgooth, St Mewan, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:5007
Long-form Identifier:1:3:5007:4
GUID (UUID V4):0
Nearest other occurrences of Erythrite
3.3km (2.0 miles) ⓘSt Austell Consols (incl. Wheal Hawkins), Downderry, St Stephen-in-Brannel, Cornwall, England, UK
6.8km (4.3 miles) ⓘSouth Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen-in-Brannel, Cornwall, England, UK
14.4km (9.0 miles) ⓘWheal Trugo, Trebudannon, St Columb Major, Cornwall, England, UK
23.3km (14.5 miles) ⓘHerodsfoot Mine (North Herodsfoot Mine), Lanreath, Cornwall, England, UK
26.1km (16.2 miles) ⓘCligga Mine, Cligga Head, Perranporth, Perranzabuloe, Cornwall, England, UK
26.6km (16.5 miles) ⓘPoldice Mine, St Day United Mines (Poldice Mines), Gwennap, Cornwall, England, UK
27.3km (16.9 miles) ⓘWheal Unity, Gwennap, Cornwall, England, UK
30.1km (18.7 miles) ⓘPentireglaze Mine (Pentire Glaze Mine), Polzeath, St Minver, Cornwall, England, UK
30.8km (19.1 miles) ⓘPednandrea Mine (Pedn-an-Drea Mine), Redruth, Cornwall, England, UK
30.9km (19.2 miles) ⓘNew Wheal Towan (Wheal Fox), Wheal Clarence (Nancekuke Mine; incl. New Dolcoath Mine), Porthtowan, St Agnes, Cornwall, England, UK
References
Phillips, William (1823) An Elementary Introduction to Mineralogy (3rd ed.)
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.
Dines, H. G. (1956) The Metalliferous Mining Region of South-West England (1st ed.) Vol. 2. Geological Survey of Great Britain.pp.548-550
 
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