Mineral is natural occurring solid. It can stable as
per temperature. Silica (read complete info about silica at
) is main abundant from the earth crust. Physical
properties distinguish physical properties. Some properties such as luster,
habit, crystal structure, hardness, streak, color, cleavage, gravity defines
mineral type. Some substance such as
Mineral is natural occurring and can be define by
chemical structure. Quartz, limestone is type of rock. It composed of mineral.
Such as calcite. Some valuable minerals can be referring as industrial
minerals. Around 20 types of minerals refer as gemstones. Such as ruby,
sapphire.
Diamond is hardest mineral (chemical formula is C),
the softest mineral is Talc: a form of limestone
Complete info about limestone read at:
http://www.stonefinder.com/categories.php?cat_id=7
Feldspar is common mineral can be use for, it can be
found in granite rocks. http://www.stonefinder.com/categories.php?cat_id=10
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