Glauconite is an iron rich variety of clay that can be found as individual pellets, composite grains, and intergranular cement. Its density ranges between 2.4 g/cm3 and 2.95 g/cm3, averaging 2.67 g/cm3. It has a Moh's scale hardness of 2. Authigenic glauconite is formed under a limited range of geologic and geochemical conditions; it typically develops on the outer margins of continental shelves, in areas of low sediment input (Odin, 1980), and its presence is valuable as an indicator of transgressive sequences.

Identifying glauconite in the subsurface is important for depositional environment interpretation, stratigraphic correlation,...

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