Science Source Stock Photo

Diorite

Description: Diorite. Diorite is a grey to dark grey intermediate intrusive igneous rock composed principally of plagioclase feldspar (typically andesine), biotite, hornblende, and/or pyroxene. It may contain small amounts of quartz, microclne and olivine. This sample has a prophyritic texture, porphyry being a general term for indicating igneous rocks that consist of large grains or crystals in a fine grained matrix. In this sample there is a matrix (light grey) of feldspar (andesine), containing grains of pyroxene and hornblende (dark grey).

Credit:

Dirk Wiersma/Science Source

Unique identifier: SS2479055

Legacy Identifier: SP5713

Type: Image

Size: 5138px × 3425px (~50 MB)

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