Research Results For 'Diabase'

DIABASE

Diabase is a dark, intrusive, basic igneous rock made up of plagioclase feldspar crystals, surrounded by smaller grains of pyroxenes, such as augite and up to ten percent quartz. Diabase is formed from magna that has cooled just below the Earth's surface, and is sometimes found as intrusions in older rock. A common place to find diabase is in the neck of old volcanoes, where it has formed a plug.
Research Diabase

PENTLANDITE

Pentlandite is the most important industrial source of nickel and has the formulae (Fe,Ni)9S8 and a relative hardness of 4. Pentlandite was confirmed as a distinct species in 1856 and named after Joseph Pentland, the discoverer of it.
Pentlandite forms in basic igneous rocks such as diabase and gabbro through magmatic segregation.
Research Pentlandite

VARIOLITE

Variolite is a kind of diorite or diabase containing imbedded whitish spherules, which give the rock a spotted appearance.
Research Variolite

VIRIDITE

Viridite is a greenish chloritic mineral common in certain igneous rocks, such as diabase, as a result of alternation.
Research Viridite

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