Dab tsi yog Cov Qauv Txheej Txheem Ntawm Crystal Ornaments?

Microscopic Crystal Structure
Cov khoom tseem ceeb ntawm ntuj siv lead ua ornaments belongs rau trigonal crystal system. Nws cov qauv txheej txheem yooj yim yog silicon-oxygen tetrahedron, qhov twg txhua lub silicon atom zaum ntawm qhov chaw ntawm tetrahedron tsim los ntawm plaub lub atoms oxygen; ib tug loj tus naj npawb ntawm cov tetrahedra txuas ua ke los ntawm kev sib koom cov pa atoms los tsim ib tug ruaj khov, peb - lub hauv paus ntawm lub network.

Hauv nws lub xeev ntshiab, cov qauv siv lead ua zoo ib yam; Txawm li cas los xij, muaj cov kab mob tsis huv -xws li txhuas (Al), hlau (Fe), lossis titanium (Ti)- tsim cov chaw xim, ua rau muaj xim xws li ntshav, daj, lossis liab dawb.
Ntuj ornaments feem ntau khaws cia ib qho ntawm lawv cov keeb kwm geological, xws li roj- cov kua dej suav nrog, cov kab loj hlob, thiab wispy internal textures; qhov tshwj xeeb ua ke ntawm kev suav nrog hauv txhua daim yog qhov tshwj xeeb.
Synthetic siv lead ua ornaments muaj cov qauv siv lead ua ntau dua thiab tsis tshua muaj impurity, ua tiav lub teeb kis tau tus nqi txog li 96.5% nrog lub teeb tawg tsawg.

Qauv ntawm Natural -Form Ornaments
Cov khoom zoo nkauj no yog ua los ntawm cov khoom siv lead ua los yog cov pob zeb nyoos; lawv tsuas yog tu yooj yim thiab ntxiv dag zog, yog li khaws cia lawv cov yam ntxwv ntawm geological yam ntxwv:

Cov khoom siv lead ua zoo nkauj muaj ntau yam hexagonal prismatic crystals loj hlob ua ke ntawm lub hauv paus pob zeb. Lub prism ntsej muag pom zoo-tsim kab rov tav striations, thiab cov siv lead ua terminations tsim rhombohedral-zoo li cov ntsiab lus, tag nrho khaws cia cleavage kab thiab cov cim kev loj hlob.
Cov qauv uas muaj cov ntxhia sib txuam (xws li hematite, azurite, lossis fluorite) khaws cov thawj crystallization thiab txuas kev sib raug zoo ntawm quartz thiab cov khoom siv nrog. Kev sib cuag ntawm cov pob zeb hauv av npog tsawg kawg 35% ntawm cov qauv ntawm tag nrho cov cheeb tsam saum npoo av, qhia meej txog cov crystallization uas tau tsav los ntawm kub gradients thaum lub sij hawm hydrothermal mineralization.