Ukulungisa i-granite eyaphukileyo
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Ukulungisa i-granite eyaphukileyo, i-ceramic mineral ye-cearing kunye ne-Uhpc
Ezinye ii-rocks kunye namaqhuma anokuchaphazela ubomi bemveliso. Nokuba ilungiswa okanye itshintshwa ixhomekeke ekuhlolweni lwethu ngaphambi kokunika iingcebiso zobungcali.