Igneous Rocks - an overview

Igneous Rocks Earth Science igneous rock In most igneous rocks the ferromagnesian silicate minerals are clearly darker than the others, but it is still quite difficult to estimate the proportions of igneous rock Igneous rocks are formed from the solidification of molten rock material There are two basic types: 1) intrusive igneous rocks such as diorite, gabbro,

heart rocker A rock of intermediate composition is diorite if it's course-grained, and andesite if it's fine-grained A mafic rock is gabbro if it's course-grained, and