Biotite (black mica)
Mafotokozedwe Akatundu
Crystal imodzi ya biotite ndi yayifupi yozungulira komanso yooneka ngati mbale, yokhala ndi mtanda wa hexagonal ndi mascaly aggregate.Brown kapena wakuda.Mtundu umakhala wakuda ndi kuchuluka kwa chitsulo.Zina zowoneka bwino komanso zamakina ndizofanana ndi za muscovite, zokhala ndi kachulukidwe kakang'ono ka 2.7-3.3.
Lembani uthenga wanu apa ndikutumiza kwa ife