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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Chalcopyrite from
Roughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK


Locality type:Mine
Classification
Species:Chalcopyrite
Formula:CuFeS2
Comments:Bridges et al. (2011): "Chalcopyrite was one of the principal ores in the veins and is common on the 90-fathom level dumps, mainly as blebs reaching no more than a few centimetres across in quartz. Oxidation to brown ‘limonite’ is common and alteration to grey copper(I) sulphides is apparent on a few specimens."
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Quartz4
Malachite4
Data
Mineral Data:Click here to view Chalcopyrite data
Locality Data:Click here to view Roughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:15490
Long-form Identifier:1:3:15490:3
GUID (UUID V4):0
Nearest other occurrences of Chalcopyrite
0.1km (0.0 miles) ⓘRoughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
0.3km (0.2 miles) ⓘMexico Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
0.4km (0.2 miles) ⓘIron Crag, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
0.4km (0.3 miles) ⓘSilver Gill, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
0.6km (0.4 miles) ⓘHigher Roughton Gill (Balliway Rigg), Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
0.8km (0.5 miles) ⓘRed Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
0.9km (0.5 miles) ⓘSwinburn Gill, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
1.3km (0.8 miles) ⓘBrae Fell Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
1.7km (1.1 miles) ⓘHay Gill Copper Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
1.8km (1.1 miles) ⓘShort Grain, Deer Hills, Caldbeck, Allerdale, Cumbria, England, UK
References
 
and/or  
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