Dab tsi yog qhov txawv ntawm lub cev ntawm biotite thiab muscovite?

Dab tsi yog qhov txawv ntawm lub cev ntawm biotite thiab muscovite?

Biotite thiab muscovite yog ob hom ntawm cov pob zeb hauv mica, ob qho tib si pom hauv cov pob zeb tsis zoo, metamorphic, thiab sedimentary pob zeb. Ob hom muaj qhov sib txawv ntawm lub cev, tshwj xeeb tshaj yog cov qauv siv lead ua sib txawv.

me me biotite
Biotite yog cov ntxhia silicate thiab belongs rau mica chav kawm ntawm cov zaub mov. Nws yog tsim los ntawm cov xim tsaus nti txheej txheej silicate minerals uas muaj hlau, magnesium, thiab txhuas. Lub npe biotite yog muab los ntawm Greek lo lus "biotos" lub ntsiab lus "muscle" thiab hais txog nws qhov tshwm sim tshwm sim hauv muscovite mica. Biotite tseem hu ua "biotite" lossis "sab mica" vim nws cov xim sib sib zog nqus.

Biotite feem ntau pom muaj nyob rau hauv nruab nrab-rau coarse-grained igneous thiab metamorphic pob zeb xws li gneiss, schist, thiab granite. Nws tseem muaj nyob hauv cov pob zeb sedimentary xws li shale thiab limestone. Biotite feem ntau pom muaj nyob rau hauv flakes los yog flakes thiab ntau yam xim ntawm dub mus rau tsaus xim av.

Lub cev zoo tshaj plaws ntawm biotite yog nws cov qauv siv lead ua hexagonal. Biotite muaj basal cleavage, uas txhais tau hais tias nws tuaj yeem faib tau yooj yim raws cov dav hlau siv lead ua. Nws cov dav hlau cleavage yog ntawm 60 degree kaum rau ib leeg, tsim ib hexagon. Cov qauv siv lead ua hexagonal no yog qhov txawv ntawm biotite los ntawm muscovite.

muscovite
Muscovite yog lwm hom mica ntxhia. Nws yog cov ntxhia silicate uas muaj cov poov tshuaj, txhuas thiab hydroxide ions. Lub npe muscovite yog muab los ntawm Latin "muscovite," lub ntsiab lus "Moscow mica," hais txog nws qhov tshwm sim nyob rau hauv cheeb tsam Moscow ntawm Russia. Muscovite tseem hu ua "muscovite" vim nws lub teeb-xim tsos.

Muscovite feem ntau pom muaj nyob rau hauv nruab nrab mus rau coarse-grained igneous thiab metamorphic pob zeb, xws li gneiss thiab schist. Nws tseem muaj nyob hauv cov pob zeb sedimentary xws li shale thiab limestone. Muscovite feem ntau yog nyob rau hauv daim ntawv ntawm flakes los yog flakes thiab yog dawb mus rau lub teeb grey xim.

Lub cev zoo tshaj plaws ntawm muscovite yog nws cov qauv siv lead ua monoclinic. Muscovite muaj cleavage dav hlau, uas txhais tau hais tias nws tuaj yeem yooj yim faib ua ob feem ntawm lub kaum sab xis 90 degree. Nws cov dav hlau cleavage yog ntawm lub kaum sab xis ntawm 90 degree rau ib leeg, tsim ib qho monoclinic siv lead ua. Cov qauv siv lead ua monoclinic no yog qhov txawv ntawm muscovite los ntawm biotite.

Piv txwv li, qhov tseem ceeb ntawm lub cev yam ntxwv ntawm biotite thiab muscovite yog nws cov qauv siv lead ua. Biotite muaj cov qauv siv lead ua hexagonal, thaum muscovite muaj cov qauv siv lead ua monoclinic. Qhov sib txawv ntawm cov qauv siv lead ua no yog qhov tseem ceeb rau kev paub qhov txawv ntawm ob hom mica.