Crystallography petrography

  • How do petrologists classify rocks?

    Petrologists classify rocks by the way they form.
    The THREE classes of rocks are: igneous, sedimentary, and metamorphic..

  • How is petrography done?

    Petrography is the study of rocks in thin section by means of a petrographic microscope (i.e., an instrument that employs polarized light that vibrates in a single plane).
    Petrography is primarily concerned with the systematic classification and precise description of rocks..

  • What are the methods of petrography?

    In petrographic analysis techniques, cast thin section, X-ray diffraction, and scanning electron microscope are most widely used; electronic probe analysis is also sometimes used..

  • What is petrography analysis?

    Petrographic analysis collects data regarding the sample mineralogy, texture, mineral associations, and more in order to classify rock samples and to determine their geologic history..

  • What is the difference between petrography and petrology?

    Petrography deals with the detailed description and classification of rocks, whereas petrology focuses primarily on the rock formation, or petrogenesis..

  • What is the process of petrography?

    Petrography is regarded as the most important prerequisite of any fluid inclusion study.
    Petrography is the study of rocks in thin sections by means of a petrologic microscope (i.e., an instrument that employs polarized light that vibrates in a single plane)..

  • In petrographic analysis techniques, cast thin section, X-ray diffraction, and scanning electron microscope are most widely used; electronic probe analysis is also sometimes used.
  • Petrography is the study of rocks in thin sections by means of a petrologic microscope (i.e., an instrument that employs polarized light that vibrates in a single plane).
  • The method consists of traversing the thin section at a set grid interval and making tallys of the different minerals observed at the grid points.
    The tally numbers for different minerals are recalculated to vol. % or wt. % (obtained by multiplying the tallys by the specific gravity of each mineral).
optical crystallography The science of petrography is largely based on the study of the appearance of thin, transparent sections of rocks in a microscope fitted with polarizers. In the absence of external crystalline form, as with the minerals in a rock, a mineral often may be readily identified by the…
optical crystallography The science of petrography is largely based on the study of the appearance of thin, transparent sections of rocks in a microscope fitted with polarizers. In the absence of external crystalline form, as with the minerals in a rock, a mineral often may be readily identified by the…
Various problems of applied mineralogy are directed on the decision of problems of enrichment and extraction of a useful component from mineral raw materials.

What is optical crystallography?

optical crystallography, branch of crystallography that deals with the optical properties of crystals

It is of considerable interest theoretically and has the greatest practical importance

The science of petrography is largely based on the study of the appearance of thin, transparent sections of rocks in a microscope fitted with polarizers

What is the science of petrography?

The science of petrography is largely based on the study of the appearance of thin, transparent sections of rocks in a microscope fitted with polarizers

In the absence of external crystalline form, as with the minerals in a rock, a mineral often may be readily identified by the determination of some of its optical properties


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