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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Biotite from
Zenith Mine (Phoenix Mine), Bagot Township, Greater Madawaska, Renfrew County, Ontario, Canada


Locality type:Mine
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Zenith Mine (Phoenix Mine), Bagot Township, Greater Madawaska, Renfrew County, Ontario, Canada
Data Identifiers
Mindat Occurrence Record ID:87233
Long-form Identifier:1:3:87233:7
GUID (UUID V4):0
Nearest other occurrences of Biotite
7.6km (4.7 miles) ⓘJamieson Lime Quarry, Horton, Renfrew County, Ontario, Canada
9.5km (5.9 miles) ⓘCalabogie iron mine, Bagot Township, Greater Madawaska, Renfrew County, Ontario, Canada
9.5km (5.9 miles) ⓘJ. Dempsey occurrence, Horton, Renfrew County, Ontario, Canada
11.1km (6.9 miles) ⓘBluff Point Mine, Bagot Township, Greater Madawaska, Renfrew County, Ontario, Canada
18.6km (11.6 miles) ⓘHunt Mine (Belgian), Brougham Township, Greater Madawaska, Renfrew County, Ontario, Canada
22.9km (14.3 miles) ⓘHighway 17 roadcut, Ross Township, Whitewater Region, Renfrew County, Ontario, Canada
23.1km (14.3 miles) ⓘGreen Lake Graphite occurrence, Brougham Township, Greater Madawaska, Renfrew County, Ontario, Canada
24.7km (15.3 miles) ⓘBlack Donald Mine, Brougham Township, Greater Madawaska, Renfrew County, Ontario, Canada
25.2km (15.6 miles) ⓘRadnor mine, Grattan Township, Bonnechere Valley, Renfrew County, Ontario, Canada
31.9km (19.8 miles) ⓘDike No. 1, Griffith Township, Greater Madawaska, Renfrew County, Ontario, Canada
References
Sabina, A. P. (1971) Rocks and minerals for the collector Ottawa to North Bay, Ontario; Hull to Waltham, Quebec. Paper 70-50. Geological Survey of Canada 140 pp. doi:10.4095/102463
 
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