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Tourmaline from
Black Donald mine, Brougham Township, Renfrew Co., Ontario, Canada

Locality type:Mine
Classification
Species:'Tourmaline' (not an IMA approved species)
Formula:A(D3)G6(Si6O18)(BO3)3X3Z
Confirmation
Validity:Believed Valid
References
References:http://www.geologyontario.mndm.gov.on.ca/mndmfiles/MDI/data/records/MDI31F02NW00006.html
Data
Mineral Data:Click here to view Tourmaline data
Locality Data:Click here to view Black Donald mine, Brougham Township, Renfrew Co., Ontario, Canada
Nearest other occurrences of Tourmaline
18.5km (11.5 miles) Clyde Forks Mine, Lavant Township, Lanark Co., Ontario, Canada
19.6km (12.2 miles) Calabogie iron mine, Bagot Township, Renfrew Co., Ontario, Canada
24.7km (15.3 miles) Zenith Mine (Phoenix Mine), Bagot Township, Renfrew Co., Ontario, Canada
24.8km (15.4 miles) Keyfortmore mine, Gratton Township, Renfrew Co., Ontario, Canada
25.5km (15.9 miles) Chamberlain Creek occurrence, Bagot Township, Renfrew Co., Ontario, Canada
26.6km (16.5 miles) Kring occurrence, Miller Township, Frontenac Co., Ontario, Canada
32.2km (20.0 miles) Jamieson Lime Quarry, Horton Township, Renfrew Co., Ontario, Canada
33.3km (20.7 miles) Boerth Mine, Clarendon Township, Frontenac Co., Ontario, Canada
34.6km (21.5 miles) Swaugers Lake Occurrence, Clarendon Township, Frontenac Co., Ontario, Canada
35.7km (22.2 miles) Fernleigh occurrence, Clarendon Township, Frontenac Co., Ontario, Canada
 
Mineral and/or Locality  
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