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felsic rock |
Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson | 0.09 sec. |
felsic rockIgneous rock dominated by the light-coloured, silicon- and aluminum-rich minerals feldspar and quartz. The presence of these minerals gives felsic rock its characteristic light gray colour. The presence of small amounts of dark minerals rich in magnesium and iron produces slight colour variations. Typical felsic rocks include granite and rhyolite. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| prospect, hole KW06-01 was drilled vertically to 880 feet and encountered sheared and veined intermediate volcaniclastic andesite country rock and interbedded felsic rhyolite to rhyodacite units. Recent work on the 18 claim (450 hectares) copper property known has the "Shaylee" property have uncovered some very impressive native copper along with globs of massive chalcocite in quartz veins hosted by sericite schist derived from felsic volcanic & epiclastic sediment protholiths. A broad through-going garnet-chlorite-pyrite surface alteration zone, within felsic volcanic rocks, earlier mapped by the Company is coincident with the Redfox Lake Anomaly, providing strong geological evidence in support of the conductor. |
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