Star Mica Metamorphic Rock with Quartz | 43.2g | Muscovite | Brazil | SO24 Labradorite Dimensions: 69x54x63mm / 2

Dimensions:   69x54x63mm / 2

This is a specimen of Sudbury Black Onaping Breccia

Color: Fluorescent Green

3 inches  Weight:  14

though somewhat incomplete terminations

Star Mica Metamorphic Rock with Quartz | 43.2g | Muscovite | Brazil | SO24 Labradorite Dimensions: 69x54x63mm / 2This is a specimen of Star Mica or Muscovite and Quartz cluster. These clusters show crystals that grow in sheets or book formations. It is silvery gold with good transparency when held up to the light. The name Muscovite comes from the term Muscovy Glass which was a name for the thick sheets of Mica used as a substitute for glass Russia. The name Mica is derived from the Greek word that means to split. On this nice specimen, the matrix faces are