ELBAITE
Specimen elb-25
$ 120.00Dims: 2.8" x 1.6" x 1.3" (7.1 x 4.1 x 3.3 cm)
Wt: 2.42 oz. (68.8 g)
Cruzeiro Mine, Minas Gerais, Brazil
The quartz crystal host of this specimen holds 3 undamaged and 4 damaged Elbaite crysals. The largest of these crystals has dimensions of 1.4 x 0.5 x 0.4" (3.5 x 1.3 x 1.0 cm) and shows reasonably good trigonal prismatic form, though its termination is a bit odd; it is flat and basal, but a small part of it grew beyond the main termination, so that there is somewhat of a "bi-level" effect. Like the other crystals, this one has a rather dark green color that has an almost olive tint to it. It seems that this dark green color is only evident on the crystals' prism surfaces, as the breakage planes on their bases show that their interiors have a much paler, blue-green coloration. All have a vitreous luster that is disseminated due to their concentrated lengthwise striations. The largest crystal is only moderately translucent due to intense internal fracturing and other inclusions, but the smaller crystals are clearer and show noticeable patches of clarity. The quartz host consists of several intergrown crystals that are generally incomplete but show excellent hexagonal prismatic form and almost no fresh damage. The visible faces are complex and clea, and show a bright, vitreous luster, and all crystalline edges between the faces are sharp and well-defined.