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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Chalcocite from
Pembroke Mine, South Par Mine, St Blaise, Cornwall, England, UK


Locality type:Mine
Classification
Species:Chalcocite
Formula:Cu2S
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcocite data
Locality Data:Click here to view Pembroke Mine, South Par Mine, St Blaise, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:690804
Long-form Identifier:1:3:690804:1
GUID (UUID V4):0
Nearest other occurrences of Chalcocite
0.3km (0.2 miles) ⓘEast Crinnis Mine (incl. Wheal Rowe), South Par Mine, St Blaise, Cornwall, England, UK
1.4km (0.9 miles) ⓘCrinnis Mine (Great Crinnis Mine; Carlyon Consolidated Mine), Carlyon Bay, Carlyon, Cornwall, England, UK
2.0km (1.3 miles) ⓘWheal Eliza (Boscundle Mine), Carlyon, Cornwall, England, UK
3.1km (1.9 miles) ⓘLanescot Mine, Fowey Consols (incl. Wheal Treasure; Wheal Fortune; Wheal Chance), Tywardreath and Par, Cornwall, England, UK
3.4km (2.1 miles) ⓘFowey Consols (incl. Wheal Treasure; Wheal Fortune; Wheal Chance), Tywardreath and Par, Cornwall, England, UK
3.9km (2.4 miles) ⓘNew Fowey Consols, Lanlivery, Cornwall, England, UK
4.7km (2.9 miles) ⓘWest Polmear Mine (Carvath United Mine; Carvath Mine; Wheal Change), St Austell, Cornwall, England, UK
7.5km (4.7 miles) ⓘGunheath China Clay Pit, Stenalees, Treverbyn, Cornwall, England, UK
8.1km (5.0 miles) ⓘOld Beam Mine (Great Beam Mine), Bugle, Treverbyn, Cornwall, England, UK
8.9km (5.5 miles) ⓘSilver Vein Mine (Beacon Hill Mine; Wheal Fortescue), Lostwithiel, 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
Smyth, Warington W.; Reeks, Trenham; Rudler, F. W. (1864) A Catalogue of the Mineral Collections in the Museum of Practical Geology. Museum of Practical Geology.
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.559-561
 
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