groundmass
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ground·mass (ground

)

The fine-grained crystalline base of porphyritic rock in which larger crystals are embedded.

groundmass [ˈgraʊndˌmæs]

(Earth Sciences / Geological Science) the matrix of igneous rocks, such as porphyry, in which larger crystals (phenocrysts) are embedded

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Noun

groundmass - (geology) the matrix of fine-grained crystalline material in which larger crystals are embedded

geology - a science that deals with the history of the earth as recorded in rocks

igneous rock - rock formed by the solidification of molten magma

porphyritic rock, porphyry - any igneous rock with crystals embedded in a finer groundmass of minerals

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groundmass (redirected from Matrix (geology))

groundmass
(redirected from Matrix (geology))