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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Brochantite from
The Gannel Smelter slag locality, Crantock, Cornwall, England, UK


Locality type:Slag Locality
Classification
Species:Brochantite
Formula:Cu4(SO4)(OH)6
Formation:Post-mining/Anthropogenic
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Brochantite data
Locality Data:Click here to view The Gannel Smelter slag locality, Crantock, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:693268
Long-form Identifier:1:3:693268:8
GUID (UUID V4):0
Nearest other occurrences of Brochantite
8.7km (5.4 miles) ⓘPerran St George Mine (Perran Great St George Mine; Great St George Mine; Perran St George United Mine), Perran St George and Droskyn Mines, Perranporth, Perranzabuloe, Cornwall, England, UK
9.1km (5.7 miles) ⓘCligga Mine, Cligga Head, Perranporth, Perranzabuloe, Cornwall, England, UK
9.3km (5.8 miles) ⓘCligga Head, Perranporth, Perranzabuloe, Cornwall, England, UK
9.6km (6.0 miles) ⓘHanover Cove (Vugga Hayle), St Agnes, Cornwall, England, UK
12.3km (7.6 miles) ⓘWheal Friendly (West Wheal Pink), West Wheal Kitty group, St Agnes, Cornwall, England, UK
15.2km (9.5 miles) ⓘWheal Charlotte (Great Wheal Charlotte), Porthtowan, St Agnes, Cornwall, England, UK
16.6km (10.3 miles) ⓘSouth Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen-in-Brannel, Cornwall, England, UK
19.0km (11.8 miles) ⓘWheal Unity, Gwennap, Cornwall, England, UK
19.3km (12.0 miles) ⓘWheal Gorland, St Day, Cornwall, England, UK
19.9km (12.4 miles) ⓘWheal Jewel, Gwennap, Cornwall, England, UK
References
BMS Newsletter 79, March 2010 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
 
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