Malumikizidwe a slate amayamba chifukwa cha kukula kwa ma microscopic mica flakes, osati chifukwa chogawanika pa strata yoyambirira ya sedimentary.
Slate imapangidwa pamene miyala ya matope, shale, kapena felsic igneous rock imakwiriridwa ndi kutenthedwa ndi kupanikizika kochepa.
Slate ndi yopyapyala kwambiri ndipo sioneka ndi maso a munthu. Slate yopukutidwa ili ndi malo osawoneka bwino koma ndi yosalala poikhudza ndipo kale inkagwiritsidwa ntchito popanga mabolodi akuda. Kuchuluka pang'ono kwa mica ya silika kumapangitsa slateyo kuoneka ngati galasi la silika.

Slate imawoneka mumitundu yosiyanasiyana chifukwa cha kusiyana kwa makhalidwe a mchere ndi momwe zinthu zilili mumlengalenga woyambirira wa sedimentary. Mwachitsanzo, black slate idapangidwa pamalo opanda mpweya wokwanira, koma red slate idapangidwa pamalo okhala ndi mpweya wochuluka.
Slate imapezeka pansi pa kutentha kochepa komanso kupsinjika, kotero kuti zinthu zakale za zomera ndi zinthu zina zatsopano zitha kusungidwa.

Slate imakumbidwa m'maboloko akuluakulu ndipo imagwiritsidwa ntchito popanga ma panelo owongolera magetsi, malo ogwirira ntchito, mabolodi akuda, ndi pansi chifukwa cha mawonekedwe ake ofanana ndi mbale, olimba, komanso osweka. Ma slate ang'onoang'ono amagwiritsidwa ntchito kumanga madenga.
Kaya ndi phiri lalitali kapena chigwa chakuya, mzinda waukulu wodzaza ndi anthu kapena kumidzi yamtendere, mawonekedwe odabwitsa a slate ndi khalidwe lake labwino zimathandiza nthawi zonse miyoyo ya anthu ndi ntchito zawo. Uwu ndi slate, moyo wosavuta koma wolimba, mwala womwe umasunga nkhani ndi zokumbukira za zaka mabiliyoni ambiri.
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