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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Fluorite from
Speedwell Mine (Oakden Level), Castleton, High Peak, Derbyshire, England, UK


Locality type:Mine
Classification
Species:Fluorite
Formula:CaF2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Fluorite data
Locality Data:Click here to view Speedwell Mine (Oakden Level), Castleton, High Peak, Derbyshire, England, UK
Data Identifiers
Mindat Occurrence Record ID:630351
Long-form Identifier:1:3:630351:8
GUID (UUID V4):0
Nearest other occurrences of Fluorite
0.4km (0.2 miles) ⓘShackhole Scrin, Castleton, High Peak, Derbyshire, England, UK
0.4km (0.2 miles) ⓘSlate Scrin Mine, Castleton, High Peak, Derbyshire, England, UK
0.4km (0.3 miles) ⓘOld Tor Mine, Castleton, High Peak, Derbyshire, England, UK
0.4km (0.3 miles) ⓘCowlow Nick, Castleton, High Peak, Derbyshire, England, UK
0.6km (0.3 miles) ⓘTreak Cliff Cavern (Treak Cliff Mine), Castleton, High Peak, Derbyshire, England, UK
0.8km (0.5 miles) ⓘWall Shaft Mine, Castleton, High Peak, Derbyshire, England, UK
0.9km (0.5 miles) ⓘPeakshole Sough, Castleton, High Peak, Derbyshire, England, UK
0.9km (0.6 miles) ⓘBlue John Mine (Blue John Cavern), Castleton, High Peak, Derbyshire, England, UK
1.0km (0.6 miles) ⓘOdin Mine, Castleton, High Peak, Derbyshire, England, UK
1.0km (0.6 miles) ⓘCavedale, Castleton, High Peak, 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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