"Cleavable" Quotes from Famous Books
 ... mineral usually found as cleavable or columnar, and compact masses; it is translucent and has a vitreous lustre, and the colour varies from white to pale shades of violet, grey, green or yellow. There are good cleavages in two directions. The hardness is 6 and the specific gravity 3.0. The mineral ...
— Project Gutenberg Encyclopedia |
