Geology and Minerals

Greensand

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. Greensand is also loosely applied to any glauconitic sediment.

Also on this shelf

See also

• ▸Eastern Block of the North China Craton
• ▸Christ Church (Oyster Bay, New York)
• ▸Atakor volcanic field

Uncatalogued shelf

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