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
Wheal Trewavas (Trewavas Cliff Mine), Rinsey, Breage, Cornwall, 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 Wheal Trewavas (Trewavas Cliff Mine), Rinsey, Breage, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:890741
Long-form Identifier:1:3:890741:7
GUID (UUID V4):0
Nearest other occurrences of Quartz
0.7km (0.4 miles) ⓘMegiliggar Rocks (Tremearne pegmatite), Breage, Cornwall, England, UK
1.2km (0.7 miles) ⓘRinsey Head, Rinsey, Breage, Cornwall, England, UK
3.3km (2.0 miles) ⓘLady Gwendolen Mine, Germoe, Cornwall, England, UK
3.5km (2.2 miles) ⓘGreat Wheal Fortune, Breage, Cornwall, England, UK
3.5km (2.2 miles) ⓘTregonning Hill, Breage, Cornwall, England, UK
3.7km (2.3 miles) ⓘWheal Penrose, Porthleven, Cornwall, England, UK
4.0km (2.5 miles) ⓘWheal Reeth, Boscreege, Germoe, Cornwall, England, UK
4.2km (2.6 miles) ⓘGreat Work Mine (incl. Leeds Mine), Godolphin Cross, Breage, Cornwall, England, UK
4.3km (2.7 miles) ⓘWheal Rose (Wheal Lomax), Porthleven, Cornwall, England, UK
4.4km (2.8 miles) ⓘWheal Vor (Great Wheal Vor), Carleen, Breage, Cornwall, England, UK
References
LeBoutillier, N.G.; Shail, R.K.; Jewson, C. (2003) Monazite in polymetallic chlorite-(tourmaline)-quartz-(fluorite)-cassiterite-sulphide lodes and its potential for constraining the chronology of magmatic hydrothermal mineralisation in Cornwall. Geoscience in South-West England, 10 (4). 403-409
 
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