ultramafic


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Related to ultramafic: Intermediate Rock

ul·tra·maf·ic

 (ŭl′trə-măf′ĭk)
adj.
Ultrabasic.

ultramafic

(ˌʌltrəˈmæfɪk)
adj
(Geological Science) geology (of igneous rock) composed of a very high percentage of magnesium and iron
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References in periodicals archive ?
This study is focused on the ultramafic rocks of the Jijal complex in Shangla district.
Blue Mountain contains an ultramafic intrusion (a body of ultramafic magma that intruded its way to the surface).
Rare earth elements in ultramafic and mafic rocks and their minerals; minor and accessory minerals.
The Footwall and Ultramafic zones have the greatest grade-times-width values and currently account for 80 per cent of the total tonnage in the indicated resource, according to the company's website.
Among grassroots exploration projects, Falconbridge undertook a reconnaissance program designed to follow-up on a series of Ni-Cu-Co geochemical anomalies, possibly associated with magmatic deposits in ultramafic rocks; and Soquem, Virginia Gold Mines, and Cambior coordinated their efforts to carry out prospecting work in the search for epigenetic gold, VMS, magmatic Ni-Cu and Cu-U (Olympic Dam type) deposits.
The bodies fall into two types; the first consists of relatively undeformed, fresh, layered gabbroic bodies, which contrasts with the second that consists of metamorphosed ultramafic lithologies.
Ultramafic outcrops in Italy are concentrated along the Alps and
This package overlies a soft, talcose ultramafic unit which dips north at about 70 degrees and strikes east- northeast.
Pakistan has many major ultramafic complexes with varying thickness and lithologies containing Ca and/or Mg rich silicate minerals, such as pyroxene, olivine, amphibole, serpentine, etc.
Davies, 1992) of subcreted mafic and ultramafic material after its partial transformation into dense, refractory eclogite.
Rubicon is also starting a 5,000-metre drill program on its wholly-owned McFinley project, targeting a four-kilometre-long gold-bearing ultramafic rock under Red Lake.
This area lies on the northern extension of the Trans-Superior Tectonic Zone (TSTZ), which encloses kimberlites and kimberlite-like ultramafic lamprophyre dykes in Michigan.