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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Phenakite from
Stamps and Jowl Zawn (Roscommon Cliff), Cliff outcrops, Botallack, St Just, Cornwall, England, UK


Locality type:Cliff
Classification
Species:Phenakite
Formula:Be2SiO4
Habit:long-prismatic
Colour:opaque white to yellowish (iron-stained), colourless
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Phenakite data
Locality Data:Click here to view Stamps and Jowl Zawn (Roscommon Cliff), Cliff outcrops, Botallack, St Just, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:8557
Long-form Identifier:1:3:8557:1
GUID (UUID V4):0
Nearest other occurrences of Phenakite
0.2km (0.1 miles) ⓘWheal Cock, Botallack Mine, Botallack, St Just, Cornwall, England, UK
1.2km (0.8 miles) ⓘWheal Edward, Botallack, St Just, Cornwall, England, UK
30.8km (19.1 miles) ⓘSouth Crofty Mine, Pool, Carn Brea, Cornwall, England, UK
37.6km (23.4 miles) ⓘWheal Gorland, St Day, Cornwall, England, UK
38.1km (23.7 miles) ⓘSt Day United Mines (Poldice Mines), Gwennap, Cornwall, England, UK
39.9km (24.8 miles) ⓘWheal Kitty (Kitty and Penhalls United Mine; incl. Goonlaze Mine; Wheal Osborne), St Agnes, Cornwall, England, UK
42.1km (26.1 miles) ⓘCligga Head, Perranporth, Perranzabuloe, Cornwall, England, UK
97.0km (60.3 miles) ⓘSouth Phoenix Mine, Minions, Linkinhorne, Cornwall, England, UK
97.1km (60.3 miles) ⓘCheesewring Quarry, Minions, Linkinhorne, Cornwall, England, UK
97.5km (60.6 miles) ⓘPhoenix United Mine, Minions, Linkinhorne, Cornwall, England, UK
References
Russell, Arthur (1920) On the occurrence of Phenacite and Scheelite at Wheal Cock, St. Just, Cornwall. Mineralogical Magazine and Journal of the Mineralogical Society, 19 (88) 19-22 doi:10.1180/minmag.1920.019.88.06
Kingsbury, Arthur W. G. (1958) Two beryllium minerals new to Britain: euclase and herderite. Mineralogical Magazine and Journal of the Mineralogical Society, 31 (240). 815-817 doi:10.1180/minmag.1958.031.240.10referring to Russell, 1920
 
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