Bronnrock

Company Description

A  cactusor spirit quartz is a quartz crystal that is encrusted by a secondgeneration of smaller crystals grown on its prism faces. Anotherterm used is pineapplequartz.Different from candle quartz, the small crystals point away fromthe prism (see Fig.4), and their orientation is not related to thecrystallographic orientation of the central crystal. Interestingly,the rhombohedral faces of the first generation crystal's tipsusually remain free. The most famous cactus quartz is amethyst found at a few locations in South Africa, like the specimen to the right from the vicinity of the Boutenhouthoek Farm, N.E. Pretoria (Sprich et al., 2003;Cairncross et al., 2004). On its left side one can see a cross section of a crystal, with a cut through the first generation hexagonal prism that is surrounded by younger small crystals. The specimen is also presented in the amethyst section.