Composition Structure Ntawm Pyrite Raw Materials

Cov tshuaj muaj pes tsawg leeg ntawm pyrite raw khoom yog Fe [S2] (ntawm qhov loj feem ntawm cov hlau yog 46.67% thiab qhov loj feem ntawm sulfur yog 53.33%). Cov ntsiab lus xws li Co thiab Ni hauv qhov muaj pes tsawg leeg yog isomorphously hloov rau Fe los ua CoS2-FeS2 thiab FeS2-NiS2 series. Muaj Au, Ag, Cu, Pb, Zn, thiab lwm yam raws li cov khoom sib xyaw. [4]
Crystal qauv
Isometric siv lead ua system; -Pa 3; a0=0.542nm, Z=4. Lub ntsiab hmoov siv lead ua kab: 1.632 (100), 2.709 (85), 2.423 (65). Cov khoom siv raw pyrite yog cov qauv sib txawv ntawm NaCI hom qauv, nrog Fe2+ tuav lub kaum sab xis thiab lub ntsej muag chaw, thiab dumbbell-shaped sulfur ions [S2]2- faib rau hauv kab pheeb ces kaum sib npaug rau ib-yim ntawm ib lub kub. Qhov kev ncua deb ntawm sulfur SS yog 0.210nm, uas cuam tshuam qhov kev ncua deb ntawm cation Fe2+ thiab sulfur. Lub vojvoog ntawm S2- yog 0.185nm, lub vojvoog ntawm Fe2+ yog 0.07nm, thiab qhov sib npaug ntawm ob yog 0.259nm. Qhov tseeb, qhov kev ncua deb ntawm S-Fe yog 0.226nm, qhia tias lawv nyiam nyob ze. Vim hais tias cov kev taw qhia txuas ntxiv ntawm dumbbell-zoo li sulfide ions yog staggered nyob rau hauv cov qauv, cov ntawv cog lus rog nyob rau hauv txhua qhov kev taw qhia zoo sib xws, cov cleavage ntawm pyrite yog tsis tiav, thiab hardness nce. [4]
Morphology: Trapezoidal complex dodecahedron siv lead ua hom, Th-m3 (3L24L33PC). Lub crystal tsis zoo. Ib daim ntawv tseem ceeb: lub voos xwmfab a{100}, pentagonal dodecahedron e{210}, octahedron {111}, thiab trapezoidal complex dodecahedron {321}. Peb pawg ntawm cov kab txaij sib txuam (polymorphic kab txaij ntawm {100} thiab {210}) tau pom ntawm lub ntsej muag lub ntsej muag, thiab lawv yog cov hlau hla interlaced ntxaib raws li (110). Cov aggregate feem ntau yog granular, ntom thaiv, kheej kheej, strawberry-puab, thiab lwm yam. Lub cryptocrystalline alternating pyrite raw khoom yog hu ua pyrite raw khoom.