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
Red Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK


04494470017370920445630.jpg
Calcite, etc.

Red Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
07493340017370920448968.jpg
Calcite, etc.

Red Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
01192420017370297974296.jpg
Calcite, etc.

Red Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
04289570017370297975368.jpg
Calcite, etc.

Red Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
01192420017370297974296.jpg
Calcite, etc.

Red Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
04289570017370297975368.jpg
Calcite, etc.

Red Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
Locality type:Mine
Classification
Species:Calcite
Formula:CaCO3
Comments:M.P. Cooper Collection.
Habit:small deeply etched lenticular crystals from a small dump by Swinburn Gill a few meters south of the Red Gill deep level; Quartz epimorphs with scalenohedral morphology, possibly after calcite from the No. 2 level.
Abundance at site:Very Rare
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Linarite2
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Red Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:15181
Long-form Identifier:1:3:15181:8
GUID (UUID V4):0
Nearest other occurrences of Calcite
0.7km (0.4 miles) ⓘRoughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
0.7km (0.5 miles) ⓘSilver Gill, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
0.8km (0.5 miles) ⓘRoughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
0.9km (0.6 miles) ⓘBrae Fell Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
1.1km (0.7 miles) ⓘHigher Roughton Gill (Balliway Rigg), Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
1.1km (0.7 miles) ⓘIron Crag, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
1.3km (0.8 miles) ⓘClints Gill (Roughton South Vein), Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
1.8km (1.1 miles) ⓘHay Gill Copper Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
2.3km (1.4 miles) ⓘLonglands Fell Mine, Ireby and Uldale, Allerdale, Cumbria, England, UK
2.3km (1.4 miles) ⓘIngray Gill, Caldbeck, Allerdale, Cumbria, England, UK
References
Cooper, M. P., Stanley, C. J. (1990) Minerals of the English Lake District - Caldbeck Fells. The Natural History Museum, London.
Bridges, T.F., Green, D.I., Rumsey, M.S., Leppington, C.M. (2008) A review of the mineralisation at Red Gill Mine, Caldbeck Fells, Cumbria, England. Journal of the Russell Society, 11. 29-47
 
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