Dims: 3.7" x 3.3" x 2.4" (9.4 x 8.4 x 6.1 cm)
Wt: 5.70 oz. (161.8 g)
Padre Paraiso, Minas Gerais, Brazil
This superb collector's piece consists of two clusters of rather tightly-grouped, needlelike Schorl crystals whose compact state makes me think of the term "parallel association". The larger of these clusters has dimensions of 3.6 x 1.3 x 0.9" (9.1 x 3.3 x 2.3 cm) and the smaller is about 2" (5 cm) shorter, but its other dimensions are similar, if a bit smaller. Both clusters are in excellent condition, showing no visible damage, and have very good form, though their compactness causes much intergrowth. They have the standard black color and opacity of Schorl, and their luster is bright and vitreous. Each cluster's outer crystals have grown and developed more than the inner crystals, so that both clusters are partially hollow and have an almost funnel-like appearance. Their bases are about 0.5" (1.3 cm) from each other, and the clusters grow away from each other at a 35- to 45-degree angle. They are held together by 2 hexagonal prismatic quartz crystals that are intergrown with crusts of muscovite, 2 of which partially coat each cluster. The quartz crystals both have a slightly dulled, pearly-to-vitreous luster and are translucent and somewhat milky. One is much flatter than the other, and seems to have an almost bladed form. The muscovite crystals are to small to determine without magnification, and may actually cover other Schorl or quartz crystals that hold the two clusters together. It is a magnificent specimen that can be displayed in a variety of positions.