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Biotite (mika ʻeleʻele)
Loaʻa ka biotite i nā pōhaku metamorphic, granite a me nā pōhaku ʻē aʻe.ʻO ka waihoʻoluʻu o ka biotite mai ʻeleʻele a ʻeleʻele a ʻōmaʻomaʻo paha, me ka luster aniani.ʻO ka pā a me ke kolamu ke ʻano.I nā makahiki i hala iho nei, ua hoʻohana nui ʻia ka biotite i ka pena pōhaku a me nā mea hoʻonaninani ʻē aʻe.
