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 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Wiersma, Dirk |
Taille de l’image : | 5126 px × 3417 px |
Model Release : | Non requis |
Restrictions : | - |