1. The Oosterhout Formation mainly consists of sand, often containing glauconite . 2. Thus references to " greensand marl " sometimes refer specifically to glauconite . 3. The main potassium bearing minerals are glauconite and muscovite. 4. Also, pellets composed of either glauconite or phosphorite are common in marine sedimentary rocks. 5. Glauconite gravel is used for road surfacing.6. A green iron potassium silicate called glauconite in the Curtis indicates it was deposited in a shallow sea. 7. The presence of glauconite and marine fossils in the uppermost sandstones indicate deposition in a shallow marine environment. 8. Typically the shales do not contain many fossils, the coarser sandstones often have fractions of micas and glauconite . 9. It is one of two minerals, along with glauconite , used in making the pigment known as green earth. 10. The glauconite " per se " will incorporate electrochemically bound water ( CBW ) because of the clay types.
