Which one of the following best describes how talc deposits might form?
A) reaction of hydrothermal fluids with quartz- rich sandstones during contact metamorphism
B) high pressure metamorphism associated with impact of an asteroid or large meteorite
C) reaction of olivine and pyroxene with hydrothermal fluids during regional metamorphism
D) dehydration of gypsum and limestone during contact metamorphism

Question

Quizplus · Accepted Answer

Talc deposits commonly form through the reaction of olivine and pyroxene with hydrothermal fluids during regional metamorphism. This process alters these minerals into talc, among other products, under specific conditions of temperature and pressure.

Which One of the Following Best Describes How Talc Deposits