Describe the megascopic and microscopic characters of gabbro and basalt with help of neat well labelled diagrams.

Gabbro and basalt are both igneous rocks, but they differ in texture, mineral composition, and the scale at which these characteristics can be observed. The megascopic and microscopic characteristics of these rocks help in identifying and understanding their formation and classification.

Megascopic Characters of Gabbro:
Gabbro is a coarse-grained, intrusive igneous rock, typically formed in the Earth's crust. It has a black or dark greenish color due to the presence of mafic minerals like pyroxene and plagioclase feldspar. The grain size of gabbro is large enough to be seen with the naked eye, typically greater than 1 mm in diameter. The rock is composed of interlocking crystals of plagioclase feldspar, pyroxene, and sometimes olivine, forming a dense and hard texture.

The most distinctive feature of gabbro is its uniform texture, where minerals are evenly distributed throughout the rock. The texture is holocrystalline, meaning the rock is made entirely of crystals. Gabbro is often ___ _________ _________ _______ ________ ____ _______ ___ __________.
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