The Phenomenon where electric charge develops due to application of pressure is ______

The minerals which develop electric charge upon heating are called ______

What is the chemical composition of Baryte?

What is the form or structure of corundum?

What is the streak given by calcite minerals?

What type of cleavage is shown by mica group?

Pick the quartz which is colourless among the following.

The behaviour of a mineral towards the forces that tend to destroy it is called _______