Potassium–argon ages of intrusion and scheelite mineralization, Cantung, Tungsten, Northwest Territories

K–Ar dating of magmatic biotite, and of hydrothermal biotite and muscovite, demonstrates that quartz monzonite intrusion and exoskarn scheelite mineralization at Cantung, N.W.T., took place over a brief interval in the Upper Cretaceous (ca. 91 Ma). The regional age relationships of magmatic and ore-...

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Bibliographic Details
Published in:Canadian Journal of Earth Sciences
Main Authors: Archibald, Douglas A., Clark, Alan H., Farrar, Edward, Zaw, U Khin
Format: Article in Journal/Newspaper
Language:English
Published: Canadian Science Publishing 1978
Subjects:
General Earth and Planetary Sciences
Northwest Territories
Mackenzie mountains
Online Access:http://dx.doi.org/10.1139/e78-126
http://www.nrcresearchpress.com/doi/pdf/10.1139/e78-126
Description
Summary:K–Ar dating of magmatic biotite, and of hydrothermal biotite and muscovite, demonstrates that quartz monzonite intrusion and exoskarn scheelite mineralization at Cantung, N.W.T., took place over a brief interval in the Upper Cretaceous (ca. 91 Ma). The regional age relationships of magmatic and ore-forming activity in the Logan–Mackenzie Mountains are poorly defined, but it is tentatively inferred that tungsten mineralization may have been related to a late stage in the plutonic development of the area.

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