Greensand
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Revision as of 11:47, 23 November 2017 by Iceagefarmer (talk | contribs) (Created page with "via [https://en.wikipedia.org/wiki/Greensand wikipedia]: Greensand or green sand is a sand or sandstone which has a greenish color. This term is specifically applied to shall...")
via wikipedia:
Greensand or green sand is a sand or sandstone which has a greenish color. This term is specifically applied to shallow marine sediment, that contains noticeable quantities of rounded greenish grains. These grains are called glauconies and consist of a mixture of mixed-layer clay minerals, such as smectite and glauconite mica. Greensand is also loosely applied to any glauconitic sediment.
