Dims: 3.4 x 3.0 x 2.7" (8.6 x 7.6 x 6.9 cm)
Wt: 12.7 oz. (361 g)
Minas Gerais, Brazil
This rather odd specimen consists of many intergrown hexagonal Muscovite "books" that extend from an apatite base. The books are generally in very good condition, though several of the more exposed ones show obvious damage. The smaller books have excellent hexagonal shapes, with well-defined edges and clean faces, but most of the larger books are somewhat malformed, with some of them being almost formless. All have the standard pale brown coloration and pearly luster, and the micaceous, flaky consistency of Muscovite. Though a few of the thinner books are translucent or even dimly transparent, most are thick enough to be essentially opaque. Their base is worthy of study by itself, as it is made up of a single, incomplete and malformed apatite crystal. Its color ranges from a pale to a moderately dark greenish-gray and its luster is dull and waxy at best. The material is thoroughly opaque.