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Greensand

A rock subtype
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Name:
Green Sand, as a mineralogical/geological term is known from at least by 1817 (Warburton, Henry, A Description of Some Specimens from the neighborhood of Cambridge, New Monthly Magazine, v. 1, p. 177). The descriptive term "green sands" appears in travelog-style publications much earlier and were said to be familiar to area brickmakers.
"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." (Wikipedia)


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Unique IdentifiersHide

Mindat ID:
27117
Long-form identifier:
mindat:1:1:27117:2

Classification of GreensandHide

Sub-divisions of GreensandHide

Mineralogy of GreensandHide

Essential minerals - these are minerals that are required within the classification of this rock:
GlauconiteK0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2

Internet Links for GreensandHide

References for GreensandHide

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