Pyromorphite. Image via AW Minerals.

Pyromorphite is as awesome as it sounds. The mineral is composed of lead chlorophosphate: Pb5(PO4)3Cl, sometimes occurring in sufficient abundance to be mined as an ore of lead. However, most of the time, it is found as a secondary mineral in the oxidized zones of lead ore deposits.

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The color of the mineral is usually some bright shade of green, yellow or brown, and the luster is resinous. The individual crystals are often modified or etched, giving a hopper-like appearance.

Image via Imgur.