Is periodite a rock or a mineral?

Answer 1

I believe you mean peridotite, which is an igneous rock. Peridot, however, is a name applied to gem quality forsterite, which is a mineral.

Answer 2

Peridotite is a type of rock that is composed mostly of the mineral olivine, along with other minerals such as pyroxene and spinel. It is commonly found in the Earth's mantle and is associated with the formation of rocks like basalt and gabbro through the process of partial melting.

Answer 3

Peridotite is a dark medium-grained intrusive igneous rock. It contains iron-rich and magnesium-rich minerals, at least 10 percent olivine, and no more than 10 percent feldspar.