A petrographic microscope Choose one: A. identifies minerals in a rock by analyzing proportions of isotopes of elements. B. is used to identify minerals in a hand specimen. C. can map the distribution of elements in a rock sample. D. sends transmitted polarized light through a thin section of rock.

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Computers & Technology

Arianna Garrett

14 March, 22:02

A petrographic microscope Choose one: A. identifies minerals in a rock by analyzing proportions of isotopes of elements. B. is used to identify minerals in a hand specimen. C. can map the distribution of elements in a rock sample. D. sends transmitted polarized light through a thin section of rock.

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Jett Patton · Answer 1

Answer: A petrographic microscope sends transmitted polarized light through a thin section of rock.

Explanation: This kind of microscope is used to identify rocks and minerals in thin sections, is also called polarized light microscope and it is equipped with a rotating circular stage, a polarizer to generate polarized light and a second polarizer.

It is used for the study of ‍ textures ‍ and ‍ relations ‍ between ‍ the ‍minerals ‍ and ‍ classification ‍ of ‍ rocks. ‍ The color changes that happen when rotating the support allow to identify the minerals present.

The ‍petrographic ‍studios ‍ are ‍ performed ‍ by ‍the ‍observation ‍al ‍microscope ‍of ‍a ‍portion ‍very ‍fine ‍of ‍rock ‍o ‍mineral ‍prepared ‍on ‍a ‍glass.