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

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Gabbro is a common type of intrusive igneous rock that is composed mainly of plagioclase feldspar, pyroxene, and sometimes olivine. It is the coarse-grained equivalent of basalt and is often found in large plutonic bodies called batholiths. When discussing the megascopic and microscopic characters of gabbro, we need to explore its macroscopic features visible to the naked eye as well as the finer details seen under a microscope.

Megascopic Characters:

1. Color: Gabbro is typically dark in color, ranging from black to dark green. This is due to the presence of dark-colored minerals such as pyroxene and sometimes olivine.

2. Texture: The rock has a coarse-grained texture, meaning that individual mineral grains are large enough to be seen without magnification. The interlocking crystals create a granular appearance.

3. Mineral Composition: The major minerals in gabbro are plagioclase feldspar and pyroxene. Plagioclase feldspar often appears white to gray and has a tabular or blocky shape. Pyroxene, which is dark green to black, may exhibit elongated _____________ _____________ ___ ______ ____________ _____ _______ _____ _____________ ________ _____ ____ _____ ______ _____.
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Degree : BACHELOR DEGREE PROGRAMMES
Course Name : Bachelor of Science
Course Code : BSCG
Subject Name : Petrology
Subject Code : BGYCT 135
Year : 2021 2022