polysulfidit

Polysulfidit is a rare mineral that belongs to the sulfide group. It was first discovered in 1973 in the Kambalda nickel mine in Western Australia. The mineral is named for its high sulfur content, with the prefix "poly-" indicating multiple sulfur atoms. Polysulfidit is typically found in association with other sulfide minerals such as pentlandite and pyrrhotite.

The chemical formula of polysulfidit is (Ni,Fe)S2, which indicates that it contains nickel, iron, and sulfur. The mineral crystallizes in the hexagonal system and has a metallic luster. Its hardness on the Mohs scale is approximately 4.5, and it has a specific gravity of around 4.6 to 4.7.

Polysulfidit is of interest to geologists and mineralogists due to its unique composition and the conditions under which it forms. It is often found in metamorphosed ultramafic rocks, which are rocks that have been altered by heat and pressure. The presence of polysulfidit in these rocks can provide insights into the geological processes that have occurred in the area.

Despite its rarity, polysulfidit is an important mineral for understanding the formation of sulfide minerals in metamorphic rocks. Its study contributes to the broader field of mineralogy and geology, helping scientists to better understand the Earth's crust and the processes that shape it.