banner-1 Hon. Minister of Steel Sh. Narendra Singh Tomar
माननीय इस्पात मंत्री, श्री नरेंद्र सिंह तोमर
banner-1 Hon. Prime Minister of India
भारत के माननीय प्रधानमंत्री जी
banner-1 Hon. Minister of State for Steel Sh. Vishnu Deo Sai
माननीय राज्य इस्पात मंत्री, श्री विष्णु देव साई

Other Mineral Ore

Other Mineral Ore

Minerals are not equivalent to rocks. Whereas a mineral is a naturally occurring usually solid substance, stable at room temperature, representable by a chemical formula, usually abiogenic, and has an ordered atomic structure, a rock is either an aggregate of one or more minerals, or not composed of minerals at all.[27] Rocks like limestone or quartzite are composed primarily of one mineral—calcite or aragonite in the case of limestone, and quartz in the latter case.[28][29] Other rocks can be defined by relative abundance of key (essential) minerals; a granite is defined by proportions of quartz, alkali feldspar, and plagioclase feldspar.[30] The other minerals in the rock are termed accessory, and do not greatly affect the bulk composition of the rock. Rocks can also be composed entirely of non-mineral material; coal is a sedimentary rock composed primarily of organically derived carbon.