What are the conditions for authigenic titanium oxide minerals such as ilmenite, brookite, anatase in quartz overgrowths of fluvial sand?

17 January 2019 0 2K Report

Pseudo-orthorhombic and thin hexagonal plate crystals occur within overgrowth cements of a silcrete. Chemical analysis indicates Ti. Formation of authigenic Ti minerals concurrent with silica cements indicate what range of temp and pH conditions.

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