| The limestone-dolomite breccia is characterized by abundant palygorskite, minor sepiolite, rare kaolinite and near absence of smectite. |
| Although type 1 Mg-smectite may be derived from tektitcs, or volcanic glass, there is strong evidence that the smectite spherules are of tektite origin. |
| The other two silicates are possibly an amphibole and a member of the smectite group. |
| In the presence of kaolinite and illite, aggregate sizes were smaller and sinking rates lower than in the presence of smectite and quartz. |
| The lake may have dried up or nearly dried up periodically, producing outward concentric zones of albite, analcime, clinoptilolite, and smectite. |
| In most sedimentary rocks, mica, feldspar and less stable minerals have been reduced to clay minerals like kaolinite, illite or smectite. |
