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

Gash-veins are generally found in _________

Deposits that were formed subsequent to the formation of the host rocks are called ________

The type of vein commonly found in igneous rocks is _________

Which of the following is not an essential condition for hydrothermal deposits?

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

The deposits that have formed simultaneously with the enclosing rock are called _________

Magmatic ore deposits do not commonly occur in forms of injective.