glauconite
Noun
Meaning
The green mineral characteristic of the greensand of the chalk and other formations. It is a hydrous silicate of iron and potash. See Greensand.
Source: Webster's dictionarySynonyms
clay
crystal
brimstone
color
mineral
calcite
alabaster
bauxite
fluorite
carbon
coal
boron
asphalt
cobalt
asbestos
Show all synonyms