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
Geco Mine, Gemmell Township, Thunder Bay District, Ontario, Canada


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 Geco Mine, Gemmell Township, Thunder Bay District, Ontario, Canada
Data Identifiers
Mindat Occurrence Record ID:614951
Long-form Identifier:1:3:614951:2
GUID (UUID V4):0
Nearest other occurrences of Quartz
2.6km (1.6 miles) ⓘWillroy mine, Gemmell Township, Thunder Bay District, Ontario, Canada
51.9km (32.2 miles) ⓘGolden Giant Mine, Hemlo gold deposit, Bomby Township, Thunder Bay District, Ontario, Canada
52.0km (32.3 miles) ⓘHemlo gold deposit, Bomby Township, Thunder Bay District, Ontario, Canada
52.0km (32.3 miles) ⓘWilliams Mine (Page Williams Mine), Hemlo gold deposit, Bomby Township, Thunder Bay District, Ontario, Canada
52.3km (32.5 miles) ⓘFearless-Python property, Thunder Bay District, Ontario, Canada
55.3km (34.3 miles) ⓘWhite River property (White River gold occurrence), Bomby Township, Thunder Bay District, Ontario, Canada
68.9km (42.8 miles) ⓘPrairie Lake carbonatite, Killala Lake Area, Thunder Bay District, Ontario, Canada
69.4km (43.1 miles) ⓘSugar Zone deposit, Hambleton Township, Thunder Bay District, Ontario, Canada
74.0km (46.0 miles) ⓘDeadhorse Creek complex, Walsh Township, Thunder Bay District, Ontario, Canada
74.4km (46.2 miles) ⓘColdwell complex, Thunder Bay District, Ontario, Canada
References
Petersen, E. U.; Essene, E. J.; Peacor, D. R.; Marcotty, L. A. (1989) The occurrence of högbomite in high-grade metamorphic rocks. Contributions to Mineralogy and Petrology, 101 (3). 350-360 doi:10.1007/bf00375319
Pan, Yuanming, Fleet, Michael E. (1992) Mineralogy and genesis of calc-silicates associated with Archean volcanogenic massive sulphide deposits at the Manitouwadge mining camp, Ontario. Canadian Journal of Earth Sciences, 29 (7) 1375-1388 doi:10.1139/e92-111
 
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