Prehnit mineral Prehnite is a rock forming mineral composed of calcium and aluminium with the formula Ca2AlAlSi3O10OH2. Micromount., by FRANK FOXSCIENCE PHOTO LIBRARY Stock Photo - Afloimages
Prehnite is a rock forming mineral composed of calcium and aluminium with the formula: Ca2Al(AlSi3O10)(OH)2. Micromount., by FRANK FOX/SCIENCE PHOTO LIBRARY