Melonite
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Melonite, or nickel telluride, is a telluride of nickel; it is a metallic mineral. Its chemical formula is NiTe2. It is opaque and white to reddish-white in color, oxidizing in air to a brown tarnish.
It was first described from the Melones and Stanislaus mine in Calaveras County, California in 1866.
Melonite occurs as trigonal crystals, which cleave in a (0001) direction. It has a specific gravity of 7.72 and a hardness of 1-1.5 (very soft).
In the metal finishing industry, Melonite is a trademark referring to a molten salt bath nitrocarburizing process, similar to Tenifer. This process can be applied to steels to increase corrosion and abrasion resistance, and improve other surface properties.
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