Melonite
(repeating unit)NiTe2 IMA symbol Mlt[1] Strunz classification 2.EA.20 Dana classification 02.12.14.01 Crystal system Trigonal Crystal class Hexagonal scalenohedral (3m)
H-M symbol: (3 2/m) Space group P3m1 Unit cell a = 3.84 Å, c = 5.26 Å; Z = 1 Identification Formula mass 313.89 g/mol Color White, reddish white Crystal habit Crystalline, foliated, granular Cleavage {0001} Perfect Fracture Brittle Mohs scale hardness 1–1.5 Luster Metallic Streak Dark gray Diaphaneity Opaque Specific gravity 7.72 Density 7.3 Ultraviolet fluorescence None References [2][3][4][5]
H-M symbol: (3 2/m)
Melonite 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, by Frederick Augustus Genth.
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).
See also
References
- ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- ^ Mineralienatlas
- ^ "Melonite Mineral Data". Webmineral.com. Retrieved 2011-10-28.
- ^ "Melonite mineral information and data". Mindat.org. Retrieved 2011-10-28.
- ^ "Mieralienatlas Lexikon - Melonit". Mieralienatlas. Retrieved 2011-10-28.
- D. M. Chizhikov and V. P. Shchastlivyi, 1966, Tellurium and Tellurides, Nauka Publishing, Moscow
External links
- Media related to Melonite at Wikimedia Commons
- The dictionary definition of melonite at Wiktionary