M.J. Hibbard

Glauconite


Glauconite
   (K,Na)(Fe,Al,Fe,Mg)2(Si,Al)4O10(OH)2    Monoclinic
o Diagenetic (low-T aqueous) environment in marine sediments. (chapter 13)
- Pelloidal glauconite (green) in microcrystalline dolostone. Dolomite rhombs formed from micritic calcite during or after fracture-opening of the pelloid. Thin section view (PPL) is 1.5 mm wide.


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