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Luden [163]
3 years ago
14

What would a rock that contains 30% quartz, 20% alkali feldspar, and 50% plagioclase feldspar be called

Geography
2 answers:
Lisa [10]3 years ago
8 0

The answer would be "Rhyolite Porphyry"


It is a rock that contains

a) Orthoclase + Orthoclase phenocryst = 35 % + 15 % = 50 % = plagioclase feldspar

b) Quartz = 30%

c) Alkali fled spar = 20%


White raven [17]3 years ago
6 0

<u>ANSWER:</u>

A rock which contains 30% quartz, 20% alkali feldspar, and 50% plagioclase is called Rhyolite porphyry.

<u>EXPLANATION:</u>

  • Rhyolite porphyry is known as the igneous rock and lava rock. The rock is made out from a huge composition of clear crystals.
  • These kinds of rock’s age are estimated to be around 600,000 years old. And these rocks are formed due to the explosions caused by the volcanoes.
  • Due to the reason such rocks are present near the volcanic edges.
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