Focus On Minerals

Focus On Minerals

FOCUS ON MINERALS introduces
many common minerals and their
gems. Texts and illustrations explain the physical properties useful in identifying different minerals. Th ey include crystal structure (shape), color, streak (mineral powders), luster (appearance in refected light), hardness, cleavage (breaks along
planes of weakness) and others. Precious gems and gemstones hold significant interest…

Focus On Minerals

Focus On Minerals | indiecorp | 4.5