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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Allophane from
Garras Mine (Gwarnick Mine; Guarneck Mine), Shortlanesend, Kenwyn, Cornwall, England, UK


Locality type:Mine
Classification
Species:Allophane
Formula:(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Allophane data
Locality Data:Click here to view Garras Mine (Gwarnick Mine; Guarneck Mine), Shortlanesend, Kenwyn, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:413
Long-form Identifier:1:3:413:0
GUID (UUID V4):0
Nearest other occurrences of Allophane
26.7km (16.6 miles) ⓘNew Fowey Consols, Lanlivery, Cornwall, England, UK
35.1km (21.8 miles) ⓘPort Quin Mine, Port Quin, St Minver, Cornwall, England, UK
47.9km (29.7 miles) ⓘWheal Hazard, Botallack Mine, Botallack, St Just, Cornwall, England, UK
50.2km (31.2 miles) ⓘPhoenix United Mine, Minions, Linkinhorne, Cornwall, England, UK
52.2km (32.4 miles) ⓘHawkswood Mine (Hawk's Wood Mine), North Hill, Cornwall, England, UK
66.0km (41.0 miles) ⓘWatson's Mine, Devon Great Consols, Gulworthy, West Devon, Devon, England, UK
68.3km (42.5 miles) ⓘNew East Wheal Russell (South Wheal Crebor), Gulworthy, West Devon, Devon, England, UK
75.4km (46.9 miles) ⓘSouth Mine (Wheal Ann), Devon United Mines, Peter Tavy, West Devon, Devon, England, UK
86.3km (53.6 miles) ⓘMeldon Mine, Okehampton Hamlets, West Devon, Devon, England, UK
91.4km (56.8 miles) ⓘBlackchurch cliff, Mouth Mill bay, Clovelly, Torridge, Devon, England, UK
References
Royal Cornwall Polytechnic Society (1870): 38. Annual Report, pp. 30-31
Collins, J. H. (1871) A Handbook to the Mineralogy of Cornwall and Devon. Heard and Sons, Truro.
 
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