|Coloradoite is a mercury telluride compound formed when mercury fuses with tellurium, another extremely toxic and rare metal.|
The combination of the two elements poses the risk of serious poisoning. If heated or chemically altered, deadly vapor and dust is released. Tellurium minerals may combine with gold. The streets of Kalgoorie in Australia were mined in a bizarre gold rush after the realization that gold-bearing tellurides had been used to fill potholes.
|Chalcanthite crystals are composed of copper, combined with sulfur and other elements and water. This arrangement turns copper into an extremely bio-available crystal.|
The copper becomes water soluble, and may be assimilated in great quantities by any plant or animal, rapidly weakening it and then killing it.
|Torbernite crystals form as secondary deposits in granitic rocks, and are composed of uranium. Formed through a complex reaction between phosphorous, copper, water and uranium, the crystal releases lethal radon gas.|
The bright green crystal blooms were used by prospectors as indicators of uranium deposits.