Unusual Zincite. Mine Smelter Olkusz, Poland. Zincite specimens are formed as a by-product of the mining process. VIDEO

Offering a yellow, orange, green and purple Zincite specimen formed as a by-product of the mining process. This one is a showy crystal with yellow-green on one side and the reverse purple and lavender sprays of fine crystals. We have not seen another like this. From mine Smelter process at Olkusz, Poland. 346 grams 3.5 inch by 3 inch by 1.75 inch. Quite large and unique for Zincite. Displays well on either side. See the video.

A finite, limited number of crystals of this extraordinarily beautiful mineral developed when a furnace wall at the smelter fractured in a singular event in the late 70's. As reported by the smelter superintendent, the zincite was formed in a one-time event when a smelter chimney sprang a leak, allowing an excess of oxygen to mix with the fumes inside the smelter. The oxygen that came in through the crack combined with the zinc to form zinc oxide (zincite). Zincite was then deposited in air vents, from which it was later collected.
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