Star Mica Metamorphic Rock with Quartz | 71.3g | Muscovite | Brazil | SO24

Name: Star Mica - Muscovite with Quartz
Specimen Size:  Miniature-Sized
Dimensions:  55x42x28 mm / 2.2x1.6x1.1 inches
Weight:  71.3 Grams / 2.5 ounces
Origin: Mined in Minas Gerais, Brazil

This 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 covered with beautiful golden yellow point stars of muscovite mica, a typical shape for this rare mica formation. The stars are the result of twinning; the points show a bit of wear but this does not detract from the beauty of such a piece.