Ore deposits of the Cobalt area / W. Petruk, Mineral Sciences Division.: M38-8/44E-PDF
"The Cobalt area is underlain by Keewatin volcanic and sedimentary rocks, pre-Algoman intrusive rocks, Algoman granite, Huronian sediments, Nipissing diabase, and late Keweenawan diabase dykes. Silver deposits occur as individual veins and clusters of veins in Keewatin rocks, pre-Algoman larnprophyre dykes, Huronian sediments, and Nipissing diabase. The veins are generally nearly vertical and are up to several hundred feet in vertical and horizontal extent. They are composed of carbonate minerals and contain shoots of silver ore, cobalt arsenides, and nickel arsenides. The silver ore shoots contain up to 8,000 ounces silver per ton of vein material. The silver in them is present as masses, veinlets, and separate grains. The masses and separate grains occur in arsenides, carbonate veins, and adjacent wall rock; the veinlets occur in fractures in the veins and wall rock, and along the boundaries between the veins and wall rock"--Abstract, p. 123.
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| Department/Agency | Canada. Natural Resources Canada. Canada. Department of Energy, Mines and Resources. Canada. Mines Branch. |
|---|---|
| Title | Ore deposits of the Cobalt area / W. Petruk, Mineral Sciences Division. |
| Series title | Reprint series ; RS 44 |
| Publication type | Series - View Master Record |
| Language | [English] |
| Format | Electronic |
| Electronic document | |
| Note(s) | Cover title. "Reprinted from Guidebook - Eastern Ontario and Western Quebec, pp. 123-136, August-September [...]." Historical publication digitized from print 2017 [by Natural Resources Canada]. Includes bibliographical references. |
| Publishing information | Ottawa : Queen's Printer, 1967. |
| Author / Contributor | Petruk, W., 1930- |
| Description | p. 123-136 : ill., maps |
| Catalogue number |
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| Departmental catalogue number | 300123 |
| Subject terms | Metals Minerals |
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