| 词条 | Russellite |
| 释义 |
| name = Russellite | category = Tungstate minerals | boxwidth = | boxbgcolor = | image = | imagesize = | caption = | formula = Bi2WO6 | molweight = | strunz = 4.DE.15 | system = Orthorhombic | class = Pyramidal (mm2) H-M symbol: (mm2) | symmetry = Pca21 | unit cell = a = 5.43 Å, b = 16.43 Å c = 5.45 Å; Z = 4 | color = Yellow-green, yellow | habit = Fine-grained, compact, massive | twinning = | cleavage = | fracture = | tenacity = | mohs = 3.5 | luster = | polish = | refractive = 2.17 - 2.51 | opticalprop = Biaxial (+) | birefringence = | dispersion = relatively strong | pleochroism = | fluorescence= | absorption = | streak = | gravity = 7.33 - 7.37 | density = | melt = | fusibility = | diagnostic = | solubility = | diaphaneity = | other = | references =[1][1][2] }}Russellite is a bismuth tungstate mineral with the chemical formula Bi2WO6.[3] It crystallizes in the orthorhombic crystal system. Russellite is yellow or yellow-green in color, with a Mohs hardness of {{frac|3|1|2}}.[3] Russellite is named for the mineralogist Sir Arthur Russell, and the type locality is the Castle-an-Dinas Mine,[3] near St Columb Major in Cornwall, where it was found in 1938 in wolframite.[4] It occurs as a secondary alteration of other bismuth bearing minerals in tin - tungsten hydrothermal ore deposits, pegmatites and greisens. It typically occurs associated with native bismuth, bismuthinite, bismite, wolframite, ferberite, scheelite, ferritungstite, anthoinite, mpororoite, koechlinite, cassiterite, topaz, muscovite, tourmaline and quartz.[1]References1. ^1 Handbook of Mineralogy {{Tungsten minerals}}{{mineral-stub}}2. ^Webmineral data 3. ^1 2 3 Russellite: Russellite data on Mindat.org 4. ^{{cite book | last = Embrey | first = P. G. | authorlink = |author2=Symes, R. F. | editor = | others = | title = Minerals of Cornwall and Devon | year = 1987 | publisher = British Museum (Natural History) | location = London | language = | isbn = 0-565-00989-3 | pages = 54 | chapter = The Mines and Mining }} 3 : Tungstate minerals|Bismuth minerals|Orthorhombic minerals |
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