Neptunite crystals in their host rock. Close-up of Neptunite (black) crystals within a host rock composed of natrolite (white). Natrolite is a tectosi

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Neptunite crystals in their host rock. Close-up of Neptunite (black) crystals within a host rock composed of natrolite (white). Natrolite is a tectosilicate that belongs to the zeolite group of minerals. Like most zeolites, natrolite occurs in cavities or open cracks in basaltic igneous rocks. Neptunite is a complex silicate mineral. This sample is from San Benito County, California, USA.

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Size: 5138px × 3425px
Photo credit: © DIRK WIERSMA/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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