What is the cleavage shown by quartz minerals?

The felspar minerals are free from ______

Which is the less important and more important and less important minerals crystallize respectively?

Hardness of a mineral depends upon _______

Which quartz mineral shows blue colour?

Dolomite is formed by the action of magnesian rich sea water on which deposit?

The tendency of a crystallized mineral to break along certain directions yielding more or less smooth, plane surfaces is…

The mica group minerals show which structure in the microscopic level?