Twinned augite crystals, polarised light micrograph. This mineral contains calcium, sodium, magnesium, iron and aluminium in a silicate matrix. Its cr

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Twinned augite crystals, polarised light micrograph. This mineral contains calcium, sodium, magnesium, iron and aluminium in a silicate matrix. Its crystals form in igneous rocks (black) such as potash-rich lavas. Augite is a member of the pyroxene group of rock-forming minerals. This cluster of crystals is around 8 millimetres across.

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Size: 3712px × 4749px
Photo credit: © DIRK WIERSMA/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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