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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Selenite from
Masson Hill and mines, Matlock, Derbyshire Dales District, Derbyshire, England, UK


Locality type:Mine
Classification
Species:Gypsum var: Selenite
Formula:CaSO4 · 2H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Selenite data
Locality Data:Click here to view Masson Hill and mines, Matlock, Derbyshire Dales District, Derbyshire, England, UK
Data Identifiers
Mindat Occurrence Record ID:630265
Long-form Identifier:1:3:630265:8
GUID (UUID V4):0
Nearest other occurrences of Selenite
3.7km (2.3 miles) ⓘBage Mine, Wirksworth, Derbyshire Dales District, Derbyshire, England, UK
19.1km (11.9 miles) ⓘGlebe Mine, Eyam, Derbyshire Dales District, Derbyshire, England, UK
19.1km (11.9 miles) ⓘEcton, Wetton, Staffordshire Moorlands, Staffordshire, England, UK
29.2km (18.1 miles) ⓘOdin Mine, Castleton, High Peak, Derbyshire, England, UK
29.6km (18.4 miles) ⓘMam Tor, Edale, High Peak, Derbyshire, England, UK
30.5km (19.0 miles) ⓘChellaston Hill, Derby, England, UK
32.1km (20.0 miles) ⓘFauld Mine, Hanbury, East Staffordshire, Staffordshire, England, UK
48.6km (30.2 miles) ⓘBardon Hill Quarry, Bardon, North West Leicestershire, Leicestershire, England, UK
86.3km (53.6 miles) ⓘGrange Top Quarry, Ketton, Rutland, England, UK
91.1km (56.6 miles) ⓘDraycote Reservoir site, Thurlaston, Warwickshire, 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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