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
Herodsfoot Mine (North Herodsfoot Mine), Lanreath, Cornwall, England, UK


Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Bournonite78
Chalcopyrite55
Tetrahedrite Subgroup46
Galena45
Siderite29
Pyrite11
Fluorite2
Ankerite1
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Herodsfoot Mine (North Herodsfoot Mine), Lanreath, Cornwall, England, UK
Photo GalleryView Gallery (4 photos)
Data Identifiers
Mindat Occurrence Record ID:46861
Long-form Identifier:1:3:46861:1
GUID (UUID V4):0
Nearest other occurrences of Quartz
0.5km (0.3 miles) South Herodsfoot Mine, Duloe, Cornwall, England, UK
3.4km (2.1 miles) Botelet Mine, Lanreath, Cornwall, England, UK
7.1km (4.4 miles) Killham Mine (Pensilva Tin Mine; Wheal Coryton), St Neot, Cornwall, England, UK
7.4km (4.6 miles) West Wheal Mary Ann (West Mary Ann Mine), Roseland, Menheniot, Cornwall, England, UK
8.3km (5.2 miles) Wheal Mary Ann, Menheniot, Cornwall, England, UK
8.3km (5.2 miles) Wheal Trelawny (incl. Wheal Honey), Menheniot, Cornwall, England, UK
8.5km (5.3 miles) Wheal Trehane, Menheniot, Cornwall, England, UK
8.9km (5.5 miles) Silver Vein Mine (Beacon Hill Mine; Wheal Fortescue), Lostwithiel, Cornwall, England, UK
9.4km (5.8 miles) Penhale Mine, Penhale and Trecarne United Mine (Caradon United Mines), Common Moor, St Cleer, Cornwall, England, UK
9.7km (6.0 miles) Wheal Treweatha, Menheniot, Cornwall, England, UK
References
 
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