Question

which one of the following is an example of mineral basalt granite Petroleum And fossils​

Answer 1

Basalt is the most common rock on Earth’s surface. Specimens are black in color and weather to dark green or brown. Basalt is rich in iron and magnesium and is mainly composed of olivine, pyroxene, and plagioclase. Most specimens are compact, fine-grained, and glassy. They can also be porphyritic, with phenocrysts of olivine, augite, or plagioclase. Holes left by gas bubbles can give basalt a coarsely porous texture.

Group – volcanic.

Colour – dark grey to black.

Texture – aphanitic (can be porphyritic).

Mineral content – groundmass generally of pyroxene ( augite), plagioclase and olivine, possibly with minor glass; if porphyritic the phenocrysts will be any of olivine, pyroxene or plagioclase.

Silica (SiO 2) content – 45%-52%.

Answer 2

Answer:

petroleum

Explanation:

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