GREENSAND
greensand
(noun) an olive-green sandstone containing glauconite
Source: WordNet® 3.1
Etymology
Noun
greensand (countable and uncountable, plural greensands)
(geology) A greenish sandstone containing glauconite.
Anagrams
• endangers
Source: Wiktionary
Green"sand` (-s, n. (Geol.)
Definition: A variety of sandstone, usually imperfectly consolidated,
consisting largely of glauconite, a silicate of iron and potash of a
green color, mixed with sand and a trace of phosphate of lime.
Note: Greensand is often called marl, because it is a useful
fertilizer. The greensand beds of the American Cretaceous belong
mostly to the Upper Cretaceous.
Source: Webster’s Unabridged Dictionary 1913 Edition