Mu bice mvukire bigize granite, harenze 90% ni feldspar na kimwe cya kane cya Feldpar aricyo kinini. FelDSpar akenshi ikunze kwera, imvi, n'umutuku, naho quarez ahanini ni ibara ritagira ibara cyangwa impimbano, rigize ibara ryibanze rya granite. Felldspar na Quriz ni imyunyu ngugu, kandi biragoye kwimuka nicyuma. Naho ibibara byijimye muri granite, cyane cyane Mica, hari andi mabuye y'agaciro. Nubwo biotite yoroshye, ubushobozi bwayo bwo kurwanya imihangayiko ntabwo ari intege nke, kandi icyarimwe bafite umubare muto muri granite, akenshi munsi ya 10%. Ubu ni ibintu bifatika aho granite ikomeye cyane.
Indi mpamvu ituma granite ikomeye nuko uduce twayo ruhambirirwa cyane kandi rwashyizwemo. Ibisebe bikunze kubara munsi ya 1% yubunini bwurutare. Ibi biha grani ubushobozi bwo kwihanganira imikazo ikomeye kandi ntabwo byoroshye kubushuhe.
Igihe cya nyuma: Gicurasi-08-2021