Question

what is mineral ? how do they occur​

Answer 1

minerals are homogenous mixtures of organic substances they are found in ores and are formed by geographical processes

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Answer 2

Solid chemical compounds occurring naturally in pure form are known as minerals. They have a definite chemical composition and physical properties. They are combinations of homogeneous substances that occur in the following ways:  

• Minerals occur in cracks, crevices, joints and faults, particularly in igneous and metamorphic rocks

• They also occur in sedimentary rocks particularly in the form of beds and layers. Coal, iron ore, gypsum and sodium salt are some of the minerals found in sedimentary rocks.