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Dolerite   Listen
noun
Dolerite  n.  (Petrography)
(a)
A dark, crystalline, igneous rock, chiefly pyroxene with labradorite.
(b)
Coarse-grained basalt.
(c)
Diabase.
(d)
Any dark, igneous rock composed chiefly of silicates of iron and magnesium with some feldspar.





Collaborative International Dictionary of English 0.48






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