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ultrabasic

   Also found in: Dictionary/thesaurus, Wikipedia 0.01 sec.
ultrabasic [¦əl·trə′bā·sik]
(petrology)
Of igneous rock, having a low silica content, as opposed to the higher silica contents of acidic, basic, and intermediate rocks.
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Sheffield Resources will explore for nickel on its new Golden Loon project over a 7 kilometre by 2 kilometre layered ultrabasic intrusive located 4 kilometres to the west of Little Fort, British Columbia.
Production-minded Sheffield Resources picks exploration projects in ... by Western Standard
The lab tests state that "One of the rocks (epidotite), being the product of a high metamorphic reaction of ultrabasic magma and groundwater might be seen as another indication of processes related to the intrusion of kimberlite pipes.
Independent rock sample lab-tests confirm ''diamond deposits well ... by Business Wire
Southern Dyke - an extremely weathered ultrabasic rock identified along with the recovery of chrome spinels and high interest clinopyroxenes have been recovered.
Caldera Resources Inc.: Runton Igneous Complex-Positive Drill Results by Business Wire
 
 
 
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