Dims: 3.7 x 2.1 x 2.1" (9.4 x 5.4 x 5.3 cm)
Wt: 9.3 oz. (263 g)
Sentinel Rock, Colorado Springs, Colorado, U.S.A.
A single, large Zinnwaldite "book" extends from the albite base of this cabinet piece. The book is in excellent condition, showing little damage, and has dimensions of 1.5 x 1.2 x 0.8" (3.8 x 3.0 x 2.0 cm). It shows excellent monoclinic, pseudohexagonal form and the classic perfect cleavage. Its color is black-brown and its luster is the standard pearly. A few white microcline crystals are also embedded in the albite base.