- URI-21
- Mica Var. Margarite
- Wright Mine, Chester, Massachusetts, USA
- Miniature, 4.8 x 3.4 x 2.6 cm
- Ex. Harold Urish
- SOLD
A foliated mass of pearlescent pink mica, of a weird variety called margarite, is emplaced in a vug in schist: a rare calcium, aluminum silicate.