| 词条 | Saleeite |
| 释义 |
| name = Saleeite | category = Phosphate minerals | boxwidth = | image = Saléeite - La Commanderie mine, Le Temple, Deux-Sèvres, Poitou-Charentes, France.jpg | imagesize = 260px | alt = | caption = | formula = Mg(UO2)2(PO4)2·10(H2O) | strunz = 08.EB.05 | dana = | symmetry = Monoclinic 2/m | unit cell = a = 6.951(3) Å, b = 19.947(8) Å, c = 9.896(4) Å, β = 135.17(2)°; Z=2 | molweight = | color = Lemon-yellow, straw-yellow, greenish yellow | colour = | habit = Crystals are square plates, composite, flattened on {001}, with {001}, {100}, {120}, {012} (pseudotetragonal indices), to 2.5 cm; commonly in subparallel lamellar aggregates. | system = Monoclinic | twinning = | cleavage = On {001}, perfect; on {010}, {110}, indistinct | fracture = | tenacity = | mohs = | luster = Adamantine to waxy | streak = | diaphaneity = Transparent to opaque | gravity = 3.27 | density = | polish = | opticalprop = Biaxial (-) typically nearly uniaxial | refractive = nα = 1.554 - 1.559 nβ = 1.570 - 1.582 nγ = 1.571 - 1.585 | birefringence = δ = 0.027 | pleochroism = X = colorless; Z = pale greenish yellow | 2V = 2V(meas.) = 0–61° | dispersion = | extinction = | length fast/slow = | fluorescence= fluoresces bright lemon-yellow under LW UV, pale yellow under SW UV | absorption = | melt = | fusibility = | diagnostic = | solubility = | other = Radioactive | alteration = | references = [1][2][2][3] }} Saleeite is a secondary uranium mineral occurring in the oxidized zones of uranium deposits, or as disseminations in carnotite-bearing sandstones. Its chemical formula is Mg(UO2)2(PO4)2·10(H2O). It was discovered in 1932 at Shinkolobwe, Katanga Province, Democratic Republic of the Congo, and is named for Belgian mineralogist, Achille Salée (1883-1932), Professor at Université catholique de Louvain, Belgium. It was later determined that the Katanga mineral was meta-saleeite Mg(UO2)2(PO4)2·8(H2O) and the type locality was assigned to the Weißer Hirsch Mine, Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany.[4][5] References1. ^ Handbook of Mineralogy {{Phosphate-mineral-stub}}2. ^ Saleeite Mineral Data 3. ^[https://web.archive.org/web/20080819193253/http://www.uraniumminerals.com/UTh/Saleeite.htm] Uranium Minerals 4. ^Mrose, Mary E. (1950) American Mineralogist: 35: 525 5. ^1 Mindat.org 2 : Uranium minerals|Phosphate minerals |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。