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
Dale Head Mine, Newlands Valley, Above Derwent, Allerdale, Cumbria, England, UK


Locality type:Mine
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Dale Head Mine, Newlands Valley, Above Derwent, Allerdale, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:15135
Long-form Identifier:1:3:15135:9
GUID (UUID V4):0
Nearest other occurrences of Calcite
4.0km (2.5 miles) ⓘWad Mine, Seathwaite, Borrowdale, Allerdale, Cumbria, England, UK
5.4km (3.4 miles) ⓘBarrow Mine, Above Derwent, Allerdale, Cumbria, England, UK
5.9km (3.7 miles) ⓘForce Crag Mine, Coledale, Above Derwent, Allerdale, Cumbria, England, UK
10.1km (6.3 miles) ⓘWythburn Mine (Wheal Henry; Helvellyn Mine), St. John's Castlerigg and Wythburn, Allerdale, Cumbria, England, UK
12.6km (7.9 miles) ⓘThrelkeld Quarry, St. John's Castlerigg and Wythburn, Allerdale, Cumbria, England, UK
12.8km (8.0 miles) ⓘFalcon Crag, Patterdale, Eden, Cumbria, England, UK
12.8km (8.0 miles) ⓘEycott Hill, Patterdale, Eden, Cumbria, England, UK
13.1km (8.2 miles) ⓘEagle Crag Mine, Patterdale, Eden, Cumbria, England, UK
13.6km (8.4 miles) ⓘGreenside Mine, Patterdale, Eden, Cumbria, England, UK
17.1km (10.6 miles) ⓘHodge Close Quarry, Coniston, South Lakeland, Cumbria, England, UK
References
Day, Harry (1999) BMS Database, British Micromount Society.
 
and/or  
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