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
Royal mine, Matlock, Derbyshire Dales District, Derbyshire, England, UK


Locality type:Mine
Classification
Species:Calcite
Formula:CaCO3
Habit:Scalenohedrons to 30cm
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Royal mine, Matlock, Derbyshire Dales District, Derbyshire, England, UK
Data Identifiers
Mindat Occurrence Record ID:629686
Long-form Identifier:1:3:629686:5
GUID (UUID V4):0
Nearest other occurrences of Calcite
0.2km (0.1 miles) ⓘCumberland mine, Matlock, Derbyshire Dales District, Derbyshire, England, UK
0.4km (0.3 miles) ⓘWapping Mine, Matlock Bath, Derbyshire Dales District, Derbyshire, England, UK
0.7km (0.4 miles) ⓘRutland Cave Mine (Rutland Mine; Nestus Mine), Heights of Abraham, Matlock Bath, Derbyshire Dales District, Derbyshire, England, UK
0.7km (0.4 miles) ⓘMasson Cave, Heights of Abraham, Matlock Bath, Derbyshire Dales District, Derbyshire, England, UK
0.7km (0.4 miles) ⓘBall Eye Quarry, Bonsall, Derbyshire Dales District, Derbyshire, England, UK
0.8km (0.5 miles) ⓘBall Eye Mine, Bonsall, Derbyshire Dales District, Derbyshire, England, UK
1.1km (0.7 miles) ⓘRiber mine, Matlock, Derbyshire Dales District, Derbyshire, England, UK
1.3km (0.8 miles) ⓘMasson Hill Quarry, Matlock, Derbyshire Dales District, Derbyshire, England, UK
1.8km (1.1 miles) ⓘDene Quarry, Cromford, Derbyshire Dales District, Derbyshire, England, UK
2.1km (1.3 miles) ⓘJug Holes, Matlock, Derbyshire Dales District, Derbyshire, England, UK
References
Ford, T., Sarjeant, A., Smith, M. (1993) The minerals of the Peak district of Derbyshire. UK Journal of Mines and Minerals 13, Rockbottom Publications. 16-55
 
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