Of the important sedimentary minerals A (for Quartz): B (for Calcite): C (for Ka

Question

Of the important sedimentary minerals A (for Quartz): B (for Calcite): C (for Kaolinite): D (for Halite): E (for Gypsum): F (for Hematite) a. Which mineral is the principal component of mature sandstone from the passive margin beach environment? b. Which mineral is the principal component of the finest grained mature muds/shales in the offshore environment but ultimately derived from the decay of feldspar during river transport? c. Which mineral is the principal component of limestones that have been derived from the accumulation of coral reef debris? d. Identify one mineral that dominates in the restricted salt water evaporite sedimentary environments? e. Which mineral serves as the distinctly-colored cement for the arkosic sandstones and conglomerates?

Explanation / Answer

answer a. A Quartz. Mature sandstones are quartz-rich because unstable feldspar and lithic fragments are removed by abrasion and weathring

answer b. F . Haemetite

answer c . B . Calcite . Calcite is the prinicipal component of the limestone.

answer d. D. Calcite. It dominates all the other minerals in the restricted salt water evaporite sedimentary environment.

answer e. A. Quartz.

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