What is a Rock?
A rock is any solid substance that forms part of the earth’s crust. This solid substance may be hard like granite or may even be soft like mud.
The earth crust consists of various types of rocks and some of these rocks are fine grained or large grained.
Rocks consists of different minerals. The most common rocks and their minerals are as follows:
(ROCKÂ Â Â Â Â Â –Â Â Â Â Â MINERAL)
a) Limestone – Quartz, Felspar, Micas
b) Sand Stone – Quartz, Calcite, Felspar
c) Granite – Felspar, Augite
d) Basalt – Calcite, Dolomite
e) Shale – Quartz, Micas, Felspar
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