THE CRYSTAL STRUCTURE OF GOLDQUARRYITE, (Cu2+,□)(Cd,Ca)2Al3(PO4)4F2(H2O)10{(H2O),F}2, A SECONDARY PHOSPHATE FROM THE GOLD QUARRY MINE, EUREKA COUNTY, NEVADA, U.S.A.
作者： M. A. Cooper , F. C. Hawthorne
DOI: 10.2113/GSCANMIN.42.3.753
关键词:
摘要: Nous avons resolu la structure cristalline de goldquarryite, (Cu 0 . 7 □ 3 )(Cd 1 6 Ca )Al (PO 4 ) F 2 (H O) {(H O),F} , triclinique, P1, a 6.787(1), b 9.082(2), c 10.113(2) A, 101.40(1), β 104.27(1), γ 102.51(1)°, V 568.7(3) A Z = 1, par methodes directes, et nous l'avons affinee jusqu'a un residu R 5.2% en utilisant 1630 reflexions observees avec diffractometre quatre cercles muni d'un detecteur 1K type CCD (rayonnement MoKα). La contient deux groupes cristallographiquement distincts, trois octaedres {Al(1)O }, {Al(2)O } {Al(3)O octaedre {CdO {CuO dans lequel le Cu est fait + 0.70 ). Les partagent des coins ou situe l'anion pour former une chaine [AlΦ 5 ] (Φ: anion non specifie) direction a. Cette decoree tetraedres liaison les atomes d'oxygene chaque (AlΦ ), chaines sont connectees [Al(PO F]. [CdO aretes O)2], elle aussi parallele Ces sortes liees feuillet composition [AlCd(PO F(H plan (001), que designons couche A. sites Al(3) intercales entre couches isoles l'un l'autre. constituent ouverte designee B, laquelle agences ligne long B liee partage d'octaedres alternent l'axe trame heteropolyedrique. Il y plus canaux interstitiels cette trame, orientes a, ils contiennent d'hydrogene coordinence cations B.
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