cavansite - ROM2004_1160_9

ROM2004_1160_9

cavansite

Place Collected
(Object)
:
Asia, India, Maharashtra, Pune, Wagholi
Dimensions:
15 x 8.5 x 10 cm
Object number: ROMESM47100
Credit Line: Gift of Mrs. Hertha Haist in 1997, in memory of her late husband Dr. M. Hans Frohberg
On view
Gallery Location:Teck Suite of Galleries: Earth's Treasures
DescriptionCavansite is a relatively new mineral, having been first described from Oregon in 1973. Since then, superb specimens have come from Pune, in the Maharashtra province of India. While quarrying for basalt, a hard dark volcanic rock that is crushed for use in construction, workers began to find small sprays of the bright blue mineral, and in 1988 the first of a few big cavansite finds was made. This species occurs with zeolite minerals in vesicles (cavities formed by gas bubbles trapped in lava when it cools). The mineral’s name is derived from its chemical composition: it is a calcium vanadium silicate. The ROM’s specimen is among the world’s finest. The blue colour, one of the most intense in all the mineral kingdom, contrasts vividly against white stilbite crystals.
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