पेरिडॉट इसके अंग्रेजी अर्थ का उदाहरण

Conventional scientific wisdom is that the entire mantle is largely made up of olivine-dominated peridotite, some of it primordial material.

The island contains three masses of peridotite, which are rich in the gemstone peridot (olivine).

The island is believed to be the first discovered source of peridot, which was called topazios in ancient times, hence the Greek name for the island, Topazios.

The most distinctive feature is the ultrabasic ophiolite peridotite and gabbro on Unst and Fetlar, which are remnants of the Iapetus Ocean floor.

The fragmented volcanic material (pyroclastics) of the tuff ring contains olivine, a silicate mineral containing iron and magnesium, also known as peridot when of gem quality.

The rock types are primarily pyroxene gabbro to amphibolite, with rare serpentinised peridotite and dunite, occasionally containing relict igneous or metamorphic olivine.

Types of trap rock include basalt, peridotite, diabase, and gabbro.

Hellyerite forms in this environment in nickel rich serpentinites, which are metamorphosed equivalents of ultramafic cumulate rocks such as peridotite and dunite.

Ideally, the stratigraphic sequence of an ultramafic-mafic intrusive complex consists of ultramafic peridotites and pyroxenites with associated chromitite layers toward the base with more mafic norites, gabbros and anorthosites in the upper layers.

A rock consisting of 80% olivine, 5% magnetite and 15% groundmass is an olivine mesocumulate, (in essence a peridotite).

However, unlike gabbro, no troctolite corresponds in composition to a partial melt of peridotite.

Related to the Takahide Maimai of the Hime Maimai genus that exists in Hokkaido, the Apoi Maimai can be found in the crevices around the peridotite rock.