| 词条 | Stannite |
| 释义 |
| name = Stannite | category = Sulfide mineral | boxwidth = | boxbgcolor = | image = Stannite-Chalcopyrite-Quartz-168837.jpg | imagesize = 260px | alt = | caption = | formula = Cu2FeSnS4 | molweight = | strunz = 2.CB.15a | dana = | system = Tetragonal | class = Scalenohedral ({{overline|4}}2m) H-M symbol: ({{overline|4}} 2m) | symmetry = I{{overline|4}}2m | unit cell = a = 5.4432, c = 10.7299 [Å]; Z = 2 | color = Steel-gray to iron-black, may tarnish blue | colour = | habit = Rarely as pseudo-octahedral crystals also massive, granular, and disseminated | twinning = Penetration twins on {102} | cleavage = Indistinct on {110} and {001} | fracture = Uneven | tenacity = | mohs = 4 | luster = Metallic | streak = Black | diaphaneity = Opaque | gravity = 4.3 - 4.5 | density = | polish = | opticalprop = | refractive = | birefringence = | pleochroism = | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence= | absorption = | melt = | fusibility = | diagnostic = | solubility = | other = | alteration = | references = [1][2][3] }} Stannite is a mineral, a sulfide of copper, iron, and tin. The chemical formula Cu2FeSnS4. Zinc commonly occurs with the iron and trace germanium may be present.[3] Stannite is used as an ore of tin, consisting of approximately 28% tin, 13% iron, 30% copper, 30% sulfur by mass. It is found in tin-bearing, hydrothermal vein deposits occurring with chalcopyrite, sphalerite, tetrahedrite, arsenopyrite, pyrite, cassiterite, and wolframite.[1] It is also known as bell metal ore as tin is an important constituent of bell-metal. It is thought the exploitation of tin deposits in Cornwall led to an expansion in bell founding. The name comes from the Latin for tin: stannum. It was first described in 1797 for an occurrence in Wheal Rock, St. Agnes, Cornwall, England.[3] See also
References1. ^1 http://rruff.geo.arizona.edu/doclib/hom/stannite.pdf Handbook of Mineralogy {{Sulfide-mineral-stub}}2. ^http://webmineral.com/data/Stannite.shtml Webmineral data 3. ^1 2 http://www.mindat.org/min-3747.html Mindat.org 5 : Copper minerals|Iron minerals|Tin minerals|Sulfide minerals|Tetragonal minerals |
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