mafic

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Exploration work by Paragon has documented a mesothermal gold vein environment with strong similarities to the mafic-ultramafic hosted gold deposits of other greenstone belts in Canada.

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Definitions (1)

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  1. adjective Containing or relating to a group of dark-colored minerals, composed chiefly of magnesium and iron, that occur in igneous rocks.

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Examples (37)

  • The amphibolites may represent mafic volcaniclastic lithologies. —  Digital50.com Digital 50 Daily Industry News RSS Feed
  • The Boiteau Lake Uranium Trend is hosted within mid paleoproterozoic rock units of the Joe's Pond Formation and contains a variety of lithologies including mafic volcanics, sandstones, conglomerates, chert, argillites, schist, gneiss and pegmatites. —  Digital50.com Digital 50 Daily Industry News RSS Feed
  • Uranium mineralization in all showings either occurs in carbonate altered shears and veinlets or in fractured and gossanous metapelitic sediments dominantly hosted within the mafic volcanic units. —  Digital50.com Digital 50 Daily Industry News RSS Feed
  • These intersections are all from unaltered, biotitic coarse-grained granitic dykes cutting mafic rocks. —  StreetInsider.com News Articles
  • Topics in Sedimentary Geology That I Write About Theoretical Stratigraphy #2: Barrell and the Rhythms of Geologic Time Constraints on the depths and temperatures of basaltic magma generation on Earth and other terrestrial planets using new thermobarometers for mafic magmas Methanotrophs regulated atmospheric sulfur isotope anomalies during the Mesoarchean (Tumbiana Formation, Western Australia) —  Clastic Detritus
 

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Etymologies (1)

Toggle American Heritage etymologies American Heritage Dictionary (1)

  1. ma(gnesium) + Latin f(errum), iron + -ic.
 

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