Definitions for "Margarite"
A mineral related to the micas, but low in silica and yielding brittle folia with pearly luster.
Margarite is a calcium rich member of the mica group of the phyllosilicates with formula: CaAl2(Al2Si2)O10(OH)2. It forms white to pinkish or yellowish gray masses or thin laminae. It crystallizes in the monoclinic crystal system.
Keywords:  pearl
A pearl.