| 词条 | Melonite |
| 释义 |
| name = Melonite | boxwidth = | boxbgcolor = | image = Melonite-Calaverite-219105.jpg | imagesize = | alt = | caption = Melonite after calaverite, on quartz. Cresson mine, Cripple Creek, Colorado. Size: 1.3 × 0.9 × 0.4 cm. | category = Sulfide minerals | formula = NiTe2 | molweight = 313.89 g/mol | strunz = 2.EA.20 | dana = 02.12.14.01 | class = Hexagonal scalenohedral ({{overline|3}}m) H-M symbol: ({{overline|3}} 2/m) | symmetry = P{{overline|3}}m1 | unit cell = a = 3.84 Å, c = 5.26 Å; Z = 1 | color = White, reddish white | colour = | habit = Crystalline, foliated, granular | system = Trigonal | twinning = | cleavage = {0001} Perfect | fracture = Brittle | tenacity = | mohs = 1–1.5 | luster = Metallic | streak = Dark gray | diaphaneity = Opaque | gravity = 7.72 | density = 7.3 | polish = | opticalprop = | refractive = | birefringence = | pleochroism = | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence = None | absorption = | melt = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = | prop1 = | prop1text = | references = [1][2][3][4] }} 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
References1. ^[https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Melonite Mineralienatlas] 2. ^{{cite web|title=Melonite Mineral Data|url=http://webmineral.com/data/Melonite.shtml|publisher=Webmineral.com|accessdate=2011-10-28}} 3. ^{{cite web|title=Melonite mineral information and data|url=http://www.mindat.org/min-2639.html|publisher=Mindat.org|accessdate=2011-10-28}} 4. ^{{cite web|title=Mieralienatlas Lexikon - Melonit|url=http://www.mineralienatlas.de/lexikon/index.php/MineralData?lang=en&language=english&mineral=Melonit|publisher=Mieralienatlas|accessdate=2011-10-28}}
External links
3 : Nickel minerals|Telluride minerals|Trigonal minerals |
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