BOLTWOODITE
Specimen btw-5
$ 35.00Dims: 1,0 x 0.9 x 0.8" (2.5 x 2.3 x 2.0 cm)
Wt: 14.9 g w/ specimen box
Rossing Mine, Swakopmund District, Namibia
Two clusters of radiating Boltwoodite needles rest in a hollow in the brown host rock of this piece. One of these clusters is incomplete due to its position at the edge of the piece, but the other is intact and in excellent condition. The needles therein do not exceed 0.1" (3 mm) in length and likely have very good monoclinic form. Their deep yellow coloration and pearly luster are standard for their species, and individual crystals are generally translucent. The host rock on which they rest appears to be made of siderite or calcite, or both.