Blue slate is ib hom aqueous sedimentary rock, nws zoo li yuav hla dhau grey kom muab lub suab xiav-grey. Nws lub ntsiab ntxhia muaj pes tsawg leeg yog calcium carbonate. Levendale Blue Black slate yog tsim los ntawm cov chaw txua txiag zeb me me hauv North West Spain.
Puas yog xim xiav?
Slate xiav, zoo li tag nrho lwm cov xim slate, muaj ib lub suab grey rau nws. Cov xim no feem ntau hu ua xiav-grey, lossis tseem tuaj yeem raug hu ua "livid." Slate xiav yog lub npe tom qab tus cwj pwm ntawm cov pob zeb metamorphic hu ua slate.
Puas yog slate grey lossis xiav?
Slate tau txais nws lub npe los ntawm pob zeb siv los ua cov khoom siv hauv tsev nrov. Slate cov xim txawv ntawm qhov xwm txheej thiab tuaj yeem yog grey, xiav, ntsuab-grey, tsaus liab, dub, tan, thiab txawm purplish-grey. Nws, txawm li cas los xij, feem ntau yog hais txog qhov nruab nrab-tsaus grey nrog cov lus qhia ntawm xiav.
Puas yog xiav slate ntuj?
Blue slate is a kind of aqueous sedimentary rock, it tends to be crossed over grey to give a blue-grey tone. Nws lub ntsiab ntxhia muaj pes tsawg leeg yog calcium carbonate. Levendale Blue Black slate yog tsim los ntawm cov chaw txua txiag zeb me me hauv North West Spain.
slate xiav txhais li cas?
: a greyish-xiav xim.
