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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Gypsum from
Boulton Moor, Derby, England, UK


Locality type:Moor
Classification
Species:Gypsum
Formula:CaSO4 · 2H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Gypsum data
Locality Data:Click here to view Boulton Moor, Derby, England, UK
Data Identifiers
Mindat Occurrence Record ID:18606
Long-form Identifier:1:3:18606:3
GUID (UUID V4):0
Nearest other occurrences of Gypsum
2.5km (1.5 miles) ⓘChellaston Hill, Derby, England, UK
11.3km (7.0 miles) ⓘRed Hill, Thrumpton, Rushcliffe, Nottinghamshire, England, UK
14.6km (9.1 miles) ⓘBrands Hill, Barton in Fabis, Rushcliffe, Nottinghamshire, England, UK
16.5km (10.2 miles) ⓘClifton, Nottingham, Nottinghamshire, England, UK
17.4km (10.8 miles) ⓘMarblaegis Mine, East Leake, Rushcliffe, Nottinghamshire, England, UK
18.7km (11.7 miles) ⓘEast Leake Quarry, East Leake, Rushcliffe, Nottinghamshire, England, UK
20.0km (12.4 miles) ⓘBardon Hill Quarry, Bardon, North West Leicestershire, Leicestershire, England, UK
20.6km (12.8 miles) ⓘFauld Mine, Hanbury, East Staffordshire, Staffordshire, England, UK
24.2km (15.1 miles) ⓘCrich Quarry (Crich Cliff Quarry; Cliff Quarry), Crich, Amber Valley, Derbyshire, England, UK
25.0km (15.6 miles) ⓘBage Mine, Wirksworth, Derbyshire Dales District, Derbyshire, England, UK
References
Day, Harry (1999) BMS Database, British Micromount Society.
 
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