Intrusive ultramafic rocks are often found in large, layered ultramafic intrusions where differentiated rock types often occur in layers. Such cumulate rock types...

Rare porphyritic volcanic rock Boninite – Ultramafic extrusive rock high in both magnesium and silica Carbonatite – Igneous rock with more than 50% carbonate...

ultramafic rock to serpentine group minerals. Contact metamorphism takes place when magma is injected into the surrounding solid rock (country rock)...

The rock must then be classified chemically. Mineralogical classification of an intrusive rock begins by determining if the rock is ultramafic, a carbonatite...

Formation in Wyoming and, the following year, as inclusions in the ultramafic rock kimberlite from a diamond mine in Yakutia in the Russian Far East....

ferromagnesian minerals, such as olivine and pyroxene, in mafic and ultramafic rock to produce serpentinite. Minerals formed by serpentinization include...

Serpentine soil is an uncommon soil type produced by weathered ultramafic rock such as peridotite and its metamorphic derivatives such as serpentinite...

alkali oxides (K2O plus Na2O). These place the rock in one of the fields of the TAS diagram. Ultramafic rock and carbonatites have their own specialized...

metamorphic rock composed predominantly of one or more serpentine group minerals formed by near to complete serpentinization of mafic to ultramafic rocks....

mafic mineral content. A rock with over 90% mafic mineral content will be classified instead as an ultramafic rock. A gabbroic rock with less than 10% mafic...

be confused with the mineral olivenite), is an intrusive igneous rock of ultramafic composition and with phaneritic (coarse-grained) texture. The mineral...

highland warm-summer mediterranean climate. Mount Olympus is formed of ultramafic rock, dominantly serpentinized harzburgite which is part of the Troodos...

feldspathoid. Special classifications exist for igneous rock of unusual compositions, such as ultramafic rock or carbonatites. Where possible, extrusive igneous...

Ni-Cu-PGE deposits can occur within the country rock spatially associated with the layered intrusion. Mafic-ultramafic layered intrusions occur at all levels within...

of igneous rocks, represented by the Taitao ophiolites, which is an ultramafic rock composed of olivine and pyroxene, usually found in oceanic plates....

enhanced weathering technique is in-situ carbonation of silicates. Ultramafic rock, for example, has the potential to store from hundreds to thousands...

melting temperature (solidus) of those rocks. In subduction zones, the ultramafic rock of the upper mantle is melted by the addition of volatiles from the...

Talc carbonates are a suite of rock and mineral compositions found in metamorphosed ultramafic rocks. The term refers to the two most common end-member...

and polished serpentine ornaments are sold in local gift shops. This ultramafic rock also forms a very infertile soil which covers the flat and marshy heaths...

breccias grade into root zones of dikes made of unfragmented rock. At the surface, ultramafic tuffs may occur in maar deposits. Because kimberlites are the...

coarse-grained igneous rock consisting mostly of the silicate minerals olivine and pyroxene. Peridotite is ultramafic, as the rock contains less than 45%...

calcium hydroxide (Ca+2 + 2OH−) produced during serpentinization of ultramafic rock. When this alkaline water reaches the surface, it absorbs carbon dioxide...

sedimentary rock is termed its provenance. Magmatic protoliths can be further divided into three categories: ultramafic rock, mafic rock, and quartzo-feldspathic...

orthopyroxene, which are the most common mafic minerals in intrusive rock. Rare ultramafic rocks, which contain more than 90% mafic minerals, and carbonatite...

United States Forest Service. The mountain is composed of mesozoic ultramafic rock, predominantly serpentinized peridotite. The summit rises to an elevation...

; Luetkemeyer, P. Benjamin (2016-04-01). "Carbonatite associated with ultramafic diatremes in the Avon Volcanic District, Missouri, USA: Field, petrographic...

they are to other Araucaria. Much of New Caledonia is composed of ultramafic rock with serpentine soils, with low levels of nutrients, but high levels...

Greenstone belts are zones of variably metamorphosed mafic to ultramafic volcanic sequences with associated sedimentary rocks that occur within Archaean...

Piper diagram, used in hydrochemistry UIGS Classification diagram for Ultramafic rock USDA Soil texture diagram by particle sizes Apparent molar property...

Wehrlite is an ultramafic and ultrabasic rock that is a mixture of olivine and clinopyroxene. It is a subdivision of the peridotites. The nomenclature...