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Sericite
Sericite yog ib hom tshiab ntawm cov ntxhia hauv kev lag luam nrog cov txheej txheem txheej, uas yog cov subspecies ntawm muscovite hauv tsev neeg mica nrog cov nplai zoo heev.Qhov ceev yog 2.78-2.88g / cm 3, hardness yog 2-2.5, thiab txoj kab uas hla-thickness ratio yog> 50. Nws yuav muab faib ua nyias nyias flakes, nrog silk luster thiab du zoo nkaus li, tag nrho ntawm elasticity, yooj, acid thiab alkali tsis kam, muaj zog hluav taws xob rwb thaiv tsev, kub tsis kam (txog 600 o C), thiab qis coefficient ntawm thermal expansion, thiab nto muaj zog UV tsis kam, zoo abrasion tsis kam thiab hnav tsis kam.Lub elastic modulus yog 1505-2134MPa, lub zog tensile yog 170-360MPa, lub zog shear yog 215-302MPa, thiab thermal conductivity yog 0.419-0.670W.(MK) -1.Lub ntsiab tivthaiv yog ib tug poov tshuaj silicate aluminosilicate ntxhia, uas yog silver-dawb los yog greyish-dawb, nyob rau hauv daim ntawv ntawm nplua nplai.Nws cov mis molecular yog (H 2 KAl 3 (SiC4) 3. Themineral muaj pes tsawg leeg yog qhov yooj yim thiab cov ntsiab lus ntawm cov tshuaj lom neeg tsis tshua muaj siab, tsis muaj cov khoom siv hluav taws xob, tuaj yeem siv los ua cov ntaub ntawv ntsuab.
