Hmoov mica, yog ib yam khoom siv hauv kev lag luam uas siv tau ntau yam, yog los ntawm cov pob zeb ntuj mica xws li muscovite, uas paub txog nws cov xim tsis muaj xim mus rau cov xim dawb, thiab biotite, uas feem ntau muaj xim av tsaus mus rau cov xim dub. Cov txheej txheem tsim khoom suav nrog kev sib tsoo cov hlau nyoos thiab sib tsoo nws ua cov khoom me me, ua kom cov qauv mica zoo li qub. Qhov kev hloov pauv no ua rau cov khoom me me uas sib txawv ntawm qhov loj me thiab cov duab, raws li cov kev xav tau tshwj xeeb ntawm ntau yam lag luam.

Mica raug khawb thoob plaws ntiaj teb, nrog rau cov chaw tsim khoom loj hauv Is Nrias teb, uas paub zoo rau nws cov muscovite zoo; Tuam Tshoj, uas yog lub teb chaws xa khoom loj nrog cov khoom khaws cia tseem ceeb; thiab Tebchaws Meskas, tshwj xeeb tshaj yog nyob rau hauv thaj chaw xws li North Carolina. Cov peev txheej thoob ntiaj teb no ua kom muaj kev pabcuam ruaj khov los ua kom tau raws li ntau yam kev xav tau ntawm cov lag luam thoob ntiaj teb.

Ib qho ntawm cov yam ntxwv zoo tshaj plaws ntawm mica hmoov yog nws lub zog dielectric siab, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev siv hauv capacitors thiab electronics insulation. Cov yam ntxwv no tso cai rau mica kom tiv taus cov hluav taws xob siab yam tsis muaj kev tawg, tiv thaiv cov khoom siv hluav taws xob rhiab heev los ntawm kev puas tsuaj. Tsis tas li ntawd, mica qhia txog kev ruaj khov thermal zoo heev, muaj peev xwm tiv taus qhov kub tshaj 600 ° C. Qhov kev ua kom sov no ua rau nws muaj txiaj ntsig zoo hauv kev siv kub siab, xws li kev tsim cov cub tawg thiab cov khoom siv tiv taus kub.

Cov khoom siv ntawm mica hmoov kuj pab txhawb rau nws ntau yam kev siv. Hauv kev lag luam tshuaj pleev ib ce, cov qib zoo heev ntawm mica yog siv los tsim cov xim ci ntsa iab hauv cov khoom pleev ib ce, los ntawm cov duab ntxoov ntxoo mus rau cov xim ci ntsa iab. Cov nyhuv iridescent no tsis yog tsuas yog ua kom zoo nkauj xwb tab sis kuj muab cov qauv du thiab txawm tias. Hauv cov xim thiab cov yas, hmoov mica ua haujlwm ua cov khoom siv txhawb nqa, ua rau muaj kev tiv thaiv huab cua thiab lub zog kho tshuab zoo dua. Los ntawm kev sib kis sib npaug hauv lub matrix, cov khoom mica ua haujlwm ua ib qho thaiv tiv thaiv UV hluav taws xob, dej noo, thiab lwm yam ib puag ncig, txuas ntxiv lub neej ntawm cov khoom tiav.

Kev siv cov hmoov mica hauv kev lag luam kuj muaj ntau yam sib txawv. Hauv kev lag luam khoom siv, nws yog siv rau kev rwb thaiv tsev, pab tswj qhov kub thiab txias zoo tshaj plaws thaum txo kev siv hluav taws xob. Cov txheej txheem tiv thaiv hluav taws uas muaj hmoov mica muab ib txheej tiv thaiv ntxiv, ua rau qeeb qeeb ntawm kev sib kis ntawm cov nplaim taws thiab txhim kho kev nyab xeeb hluav taws. Hauv kev tsim roj hmab, mica ua haujlwm ua tus neeg sawv cev tso tawm, tiv thaiv cov roj hmab kom tsis txhob lo rau cov pwm thaum lub sijhawm tsim khoom, yog li txhim kho kev ua haujlwm zoo thiab txo cov khib nyiab.