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Naya [18.7K]
3 years ago
15

Rocks containing many dark silicate minerals and plagioclase feldspar have a _____ composition. granitic ultramafic basaltic

Biology
2 answers:
charle [14.2K]3 years ago
4 0

Answer is basalt.

Basalt is fine grained igneous rock which contains 45 to 53% silica and 65% rich is feldspar in the form of plagioclase( silicate rock forming mineral). Feldspar is an abundant rock forming mineral. In basaltic rocks the feldspar is silica.

The basalt rocks contains pyroxene group in its minerals which gives it black color. So rocks containing many dark silicate minerals and plagioclase feldspar have basaltic composition.

Temka [501]3 years ago
4 0

Answer:

the answer is: basaltic

Explanation:

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