ultramafic


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Related to ultramafic: Intermediate Rock

ultramafic

[¦əl·trə′maf·ik]
(petrology)
Referring to igneous rock composed principally of mafic minerals, such as olivine and pyroxene.
References in periodicals archive ?
Jijal ultramafic rocks are medium to coarse grained and have hypidiomorphic texture whereas chromite mostly has allotriomorphic texture.
For example, the ultramafic intrusion at Voisey Bay in Canada is one of the richest nickel deposits in the world (also contains copper and cobalt).
To complement his 2010 Rare Earth Elements in Ultramafic and Mafic Rocks and Their Minerals; Main Types of Rocks; Rock-Forming Minerals Lesnov (geodynamics and magnetism, Russian Academy of Sciences-Siberian Branch) summarizes analytical data accumulated in the world literature and other materials about the regularities of the rare earth element distribution in minerals contained in ultramafic and mafic rocks as accessory phases.
Seven holes were drilled to test for gold mineralization associated with an ultramafic intrusive body, similar to the Ultramafic Zone in the TWG property, states the website.
The results obtained by Geologie Quebec from systematic mapping coverage indicate the presence of a wide variety of biotite-, hornblende- and pyroxene-bearing plutonic rocks, ranging in composition from felsic to ultramafic, and numerous, isolated belts of variably metamorphosed volcanic and sedimentary rocks (Fig.
Mafic to ultramafic bodies of possible ophiolitic affinity, ranging in size from 100 [m.
The first botanical investigations of ultramafic areas probably
In this study, approximate amounts of CO2 that can be sequestered in all the ultramafic rocks of Chilas, Jijal, Alpuri and Dargai are estimated using equation formulated by Zevenhoven and Kohlmann, (2001).
Even other deposit types, not traditionally related to mafic magmatic events (VMS, SEDEX), may owe their ultimate origin to mafic or ultramafic intrusions, i.
This paper is restricted to the ultramafic rocks in terms of their petrology and mineralogy.