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Dome mine, Tisdale Township, Porcupine Mining District, Timmins area, Cochrane District, Ontario, Canada
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Latitude: 48°27'46"N
Longitude: 81°14'42"W
 
 
A gold mine 2 miles SW of South Porcupine in the city of Timmins. The ore is hosted by Keewatin basalts, Timiskaming sediments and Kenoran porphyry. Gold occurs primarily in cross-cutting quartz veins and in ankerite-quartz-tourmaline veins which parallel the trend of the country rock. Tellurides are present in minor amounts. Silver is recovered at a ratio of 1 oz. of silver for each 6 oz. of gold. Of the sulphides, pyrite and/or pyrrhotite are dominant, however chalcopyrite, sphalerite, and galena are considered good indicators of gold. Minor scheelite is found in association with the porphyry ore.

The mine has been in operation since 1910.



Mineral List

Actinolite
Albite
Altaite
Ankerite
Arsenopyrite
Axinite-(Fe)
Calcite
Chalcopyrite
'Chlorite Group'
Dolomite
Epidote
Galena
Gold
Muscovite
var: Fuchsite

Muscovite
var: Sericite

Petzite
Pyrite
Pyrrhotite
Quartz
Scheelite
Silver
Sphalerite
Sylvanite
Tellurobismuthite
'Tourmaline'


25 entries listed. 21 valid minerals.

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References

- Metal Mining Mining Geol.(1937),A.I.M.E.: 383.
- Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged, Volume I, 834pp.: 94, 340.
- Geological Survey of Canada Miscellaneous Report 57.
-Gold Deposits of Ontario,Part 1, 1971, ODM, Mineral Resources Circular No.13
Geological Survey of Canada, Open File 2161 By Fyon, J A, Green, A H

Morritz, R.P. (1990): Mechanics of formation of gold-bearing fuchsite vein at the Dome Mine, Timmins, Ontario, Canada. Earth Science 1609-1620.

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Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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