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Sedimentary Quartz Sand Deposit

Physical Process - Ground surface

Required Geological Setting

Neogene and Quaternary sediments


Sedimentary quartz sand deposits associated with sedimentary rocks. Deposits are usually associated with sedimentary kaoline deposits composed of kaolinite deposited in the fluvial to lacustrine circumstances. The deposit may include lignite. The protoliths are granitoid rocks such as I-type granite, S-type granite, Granodiorite, Diorite. Feldspars and micas in these granitoid rocks are argillized by chemical weathering and removed during the deposition process, and quartz grains are selectively concentrated.

Mineral Assemblages

Quartz, Kaolinite, Halloysite

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