| 词条 | Polarite |
| 释义 |
| name = Polarite | boxwidth = | boxbgcolor = | image = | imagesize = | alt = | caption = | category = Alloys with PGE | formula = Pd,(Bi,Pb) | molweight = | strunz = 02.AC.40 | dana = | system = Orthorhombic | class = Pyramidal (mm2) (same H-M symbol) | symmetry = Ccm21 | unit cell = a = 7.19 Å, b = 8.69 Å, c = 10.68 Å; Z = 16 | color = White with yellowish tint | colour = | habit = Disseminated grains (microscopic) | twinning = | cleavage = | fracture = | tenacity = | mohs = 3.5 - 4 | luster = Metallic | streak = White | diaphaneity = Opaque | gravity = 12.51 | density = | polish = | opticalprop = | refractive = | birefringence = | pleochroism = | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | references = [1][2][3][2] }}Polarite (Pd,(Bi,Pb)), is an opaque, yellow-white mineral. Its crystals are orthorhombic pyramidal, but can only be seen through a microscope. It has a metallic luster and leaves a white streak. Polarite is rated 3.5 to 4 on the Mohs Scale.[3][4] It was first described in 1969 for an occurrence in Talnakh, Norilsk in the Polar Ural Mountains in Russia.[3] It has also been recorded from the Bushveld igneous complex of South Africa and from Fox Gulch, Goodnews Bay, Alaska.[4] References1. ^[https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Polarite Mineralienatlas] {{mineral-stub}}2. ^Mindat.org 3. ^1 2 Webmineral data 4. ^1 2 Handbook of Mineralogy 4 : Palladium minerals|Bismuth minerals|Lead minerals|Orthorhombic minerals |
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