| 词条 | Wurtzite |
| 释义 |
| name = Wurtzite | category = Sulfide mineral | boxwidth = | boxbgcolor = | image = Wurtzite-245570.jpg | caption = | formula = (Zn,Fe)S | molweight = | strunz = 2.CB.45 | dana = 02.08.07.01 | system = Hexagonal | class = Dihexagonal pyramidal (6mm) H-M symbol: (6mm) | symmetry = P63mc | color = Brownish black, Orange brown, Reddish brown, Black. | habit = Radial clusters and colloform crusts and masses. Also as tabular crystals | twinning = | cleavage = [11{{overline|2}}0] and [0001] | fracture = Uneven - irregular | mohs = 3.5-4 | luster = Resinous, brilliant submetallic on crystal faces | refractive = nω = 2.356 nε = 2.378 | opticalprop = Uniaxial (+) | birefringence = δ = 0.022 | pleochroism = | streak = light brown | gravity = 4.09 measured, 4.10 calculated | melt = | fusibility = | diagnostic = | solubility = | diaphaneity = Translucent | other = Nonmagnetic, non-radioactive | references = [1][2][3] | SMILES = [ZnH2-2]1[S+2]47[ZnH-2]2[S+2][ZnH-2]3[S+2]8([ZnH2-2][SH+2]([ZnH2-2]4)[ZnH2-2]6)[ZnH-2]4[S+2][ZnH-2]5[S+2]6([ZnH2-2]6)[Zn-2]78[S+2]78[ZnH-2]([SH+2]69)[SH+2]5[ZnH2-2][SH+2]4[ZnH-2]7[SH+2]3[ZnH2-2][SH+2]2[ZnH-2]8[SH+2]1[ZnH2-2]9 | Jmol = [ZnH2-2]1[SH+2]([ZnH2-2]6)[ZnH2-2][SH+2]7[ZnH-2]2[S+2][Zn-2]3([S+2][ZnH-2]9[S+2]5)[S+2]18[Zn-2]45[S+2][ZnH-2]5[SH+2]6[Zn-2]78[S+2]78[ZnH2-2][SH+2]5[ZnH2-2][S+2]4([ZnH2-2][SH+2]9[ZnH2-2]4)[ZnH-2]7[S+2]34[ZnH2-2][SH+2]2[ZnH2-2]8 }}Wurtzite is a zinc iron sulfide mineral ((Zn,Fe)S) a less frequently encountered mineral form of sphalerite. The iron content is variable up to eight percent.[4] It is trimorphous with matraite and sphalerite.[1] It occurs in hydrothermal deposits associated with sphalerite, pyrite, chalcopyrite, barite and marcasite. It also occurs in low-temperature clay-ironstone concretions.[1] It was first described in 1861 for an occurrence in the San José Mine, Oruro City, Cercado Province, Oruro Department, Bolivia, and named for French chemist Charles-Adolphe Wurtz.[2] It has widespread distribution. In Europe it is reported from Příbram, Czech Republic; Hesse, Germany; and Liskeard, Cornwall, England. In the US it is reported from Litchfield County, Connecticut; Butte, Silver Bow County, Montana; at Frisco, Beaver County, Utah; and from the Joplin district, Jasper County, Missouri.[1] Wurtzite structureThe wurtzite group includes: Cadmoselite CdSe, Greenockite CdS, Mátraite ZnS and Rambergite MnS, in addition to wurtzite.[5] Its crystal structure is called the wurtzite crystal structure, to which it lends its name. This structure is a member of the hexagonal crystal system and consists of tetrahedrally coordinated zinc and sulfur atoms that are stacked in an ABABABABAB pattern. The unit cell parameters of wurtzite are (-2H polytype):[2]
See also
References1. ^1 2 3 Handbook of Mineralogy 2. ^1 2 Wurtzite at Mindat.org 3. ^Wurtzite at Webmineral 4. ^Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged, pp. 226-228. 5. ^Wurtzite at Mindat.org External links
3 : Sulfide minerals|Zinc minerals|Hexagonal minerals |
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