Mention two types of formation in which minerals occur
Answers
Answer:
Explanation:
1)in igneous rock minerals may occur a cracks , joints ,full or crevices.the smaller occurrences are Called veins an smAller ones are called lodes.
In most cases Tey are formed when minerals in molten and gaseous forms are forced upwards through cavities towards the earth's surface .They soldify and cool as they rise upwards .eg. copper zinc and lead are obtained from veins and lodes
2)another mode involves decomposition of surface rocks and removal of soluble constituents leaving behind a residual mass of weathered material containing ores.Bauxite is formed this way
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Answer:The four main categories of mineral formation are: (1) igneous, or magmatic, in which minerals crystallize from a melt, (2) sedimentary, in which minerals are the result of sedimentation, a process whose raw materials are particles from other rocks that have undergone weathering or erosion, (3) metamorphic