Greenstone_belts Greenstone_belts

Greenstone belts - Definition

This article is about zones of mixed sedimentary and volcanic rock sequences that often contain minable concentrations of gold, silver, copper, zinc and lead. For other meanings, see Greenstone (disambiguation).

Greenstone belts are so called because of the green hue imparted by the chlorite minerals within the rocks. Greenstone belts are mainly found in Australia, southern Africa, and Canada, and may be found included within igneous and metamorphic rock such as basalt, granite and gneiss.

Example Usage of Greenstone

BexieLady: @fletch_VAUGHAN Greenstone necklace... kiwi, meaningful, easy to transport....
toirakau: Jade Heru: Maori art from New Zealand artists featuring maori carving and jewelry made from bone, Greenstone ja.. http://bit.ly/5g2yPD
timfarley: Photos: Routeburn and Greenstone Tracks http://tumblr.com/xoc4tetxa
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