Gash-veins are generally found in _________

What is the mineral which contains a metallic element which can be economically exploited called?

The non-metallic minerals associated with ore minerals are called _________

The definition of ore is dependent on __________

How many types of rocks are there on the basis of time of formation?

The deposits occurring close to the roofs of magmatic masses _________

When gravity is the agent of placing of deposit, the deposit is called _________

Type of veins which are bodies of tubular shape in pre-existing fissures?