A dolerite, also called a diabase, is an igneous rock, which means it was generated from the cooling and solidification of molten Earth material It is also referred to as a volcanic rock The dolerite rock is similar to basalt, but it is coarser in texture and contains crystals that can be viewed .
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Northern Ireland Geology - Dolerite Dolerite is a volcanic rock While similar to basalt, it contains crystals which can be seen with a hand lens This indicates that it cooled a little more slowly than basalt Typically it is found in volcanic plugs which channeled the basalt to the surface
Extensive Definition Diabase is a mafic, holocrystalline, igneous rock equivalent to volcanic basalt or plutonic gabbro , Parts of the Deccan Traps of India, formed at the end of the Cretaceous also includes dolerite It ,
Dolerite | Article about Dolerite by The Free Dictionary
Dolerite is a granular rock of gray to black colors, composed of labradorite feldspar and augite, with usually some magnetite When it is exceedingly fine- grained and compact, it is called basalt When it is exceedingly fine- grained and compact, it is called basalt
Dolerite, the Karoo's Fracking Game-Changer - Karoo ,
Diabase, also called Dolerite, fine- to medium-grained, dark gray to black intrusive igneous rock It is extremely hard and tough and is commonly quarried for crushed stone, under the name of trap Although not popular, it makes an excellent monumental stone and is one of the dark-coloured rocks commercially known as black granite
Definition of Dolerite 1 n A dark-colored, basic, igneous rock, composed essentially of pyroxene and a triclinic feldspar with magnetic iron By many authors it is considered equivalent to a coarse-grained basalt
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