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
High Down Quarry, West Buckland, North Devon, Devon, England, UK


Locality type:Quarry
Classification
Species:Gypsum
Formula:CaSO4 · 2H2O
Formation:Post-mining/Anthropogenic
Comments:Soft, delicate druses of fine gypsum crystals on some parts of the quarry north wall. Occasionally deposited on mosses and lichens.
Habit:Euhedral, typically blocky, tabular, occasionally prismatic to 2mm. Also encrusting, anhedral.
Colour:Clear white to yellowish and brownish.
Quality for species:Poor for species, only of interest for locality collectors. (#)
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Confirmation Details:Where Tested and Reference ID: F2017-03-HD-0001
Data
Mineral Data:Click here to view Gypsum data
Locality Data:Click here to view High Down Quarry, West Buckland, North Devon, Devon, England, UK
Data Identifiers
Mindat Occurrence Record ID:1069104
Long-form Identifier:1:3:1069104:1
GUID (UUID V4):0
Nearest other occurrences of Gypsum
36.0km (22.4 miles) ⓘRamsley Mine (Fursdon Mine), South Tawton, West Devon, Devon, England, UK
40.0km (24.9 miles) ⓘBlue Anchor, Somerset West and Taunton, Somerset, England, UK
42.8km (26.6 miles) ⓘWarren Bay, Watchet, Somerset West and Taunton, Somerset, England, UK
49.6km (30.8 miles) ⓘWheal Betsy (North Wheal Friendship; Prince Arthur Consols), Mary Tavy, West Devon, Devon, England, UK
51.4km (31.9 miles) ⓘKilve Beach, Kilve, Somerset West and Taunton, Somerset, England, UK
51.6km (32.1 miles) ⓘWheal Friendship, Mary Tavy, West Devon, Devon, England, UK
54.4km (33.8 miles) ⓘLilstock Beach, Shurton, Stogursey, Somerset West and Taunton, Somerset, England, UK
54.9km (34.1 miles) ⓘSilverbrook Mine, Ilsington, Teignbridge, Devon, England, UK
60.0km (37.3 miles) ⓘWheal Josiah, Devon Great Consols, Gulworthy, West Devon, Devon, England, UK
60.0km (37.3 miles) ⓘJackson's Bay, Barry Island, Vale of Glamorgan, Wales, UK
References
Alysson Rowan collection
 
and/or  
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