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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Quartz from
Willyhole Mine, Harwood, Forest and Frith, County Durham, England, UK


Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Willyhole Mine, Harwood, Forest and Frith, County Durham, England, UK
Data Identifiers
Mindat Occurrence Record ID:233169
Long-form Identifier:1:3:233169:0
GUID (UUID V4):0
Nearest other occurrences of Quartz
1.4km (0.9 miles) ⓘGrasshill Mine, Harwood, Forest and Frith, County Durham, England, UK
1.9km (1.2 miles) ⓘAshgillhead Mine, Harwood, Forest and Frith, County Durham, England, UK
2.4km (1.5 miles) ⓘGreenhurth Mine, Forest and Frith, County Durham, England, UK
3.4km (2.1 miles) ⓘLangtae Head Mine (Longty Head Mine), Ireshope Moor, Stanhope, County Durham, England, UK
5.5km (3.4 miles) ⓘWindy Brow Vein, Alston Moor, Eden, Cumbria, England, UK
5.5km (3.4 miles) ⓘLangdon Beck Mine, Forest and Frith, County Durham, England, UK
5.6km (3.5 miles) ⓘCalvert Mine, Alston Moor, Eden, Cumbria, England, UK
5.9km (3.7 miles) ⓘTynehead Mine, Garrigill, Alston Moor, Eden, Cumbria, England, UK
7.2km (4.5 miles) ⓘCarricks Mine, Ireshopeburn, Stanhope, County Durham, England, UK
7.8km (4.9 miles) ⓘBarbary Mine, Ireshopeburn, Stanhope, County Durham, England, UK
References
Dunham, K.C. (1990) Geology of the Northern Pennine Orefield, Volume 1, Tyne to Stainmore. 2nd edition, British Geological Survey.
 
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