Question

All igneous rocks have the same mineral compositions.

Answer 1

here is some facts

Limestone is a sedimentary rock, whereas marble is metamorphic. These two rock types can be distinguished by their textures. ... 2- Gabbro and basalt are two igneous rocks having the same chemical composition, and the same minerals (plagioclase feldspar + pyroxene), but are of different origins.

Answer 2

Answer:

NO

Explanation:

Igneous rocks are formed by crystallization or solidification of lava or magma. According to the mineralogical content Igneous rocks are Felsic (High silicon), Mafic (less silicon) and ultramafic (lowest silicon). Felsic includes Granite(intrusive) and Rhyolite(extrusive), Mafic includes Gabbro (intrusive) and Basalt(extrusive), Ultramafic includes Peridotite (Intrusive) and Komatite (extrusive). Only Gabbro and Basalt are having same mineral composition.