siliceous
Adjective
Meaning
Of or pertaining to silica; containing silica, or partaking of its nature.
Source: Webster's dictionarySynonyms
Phrases with the word
Examples
gritrock is siliceous sandstone
Because of the historical use of flint, the word "flint" is used by some potters, especially in the US, to refer to siliceous materials that are not flint.
It is probably derived from sponge spicules or other siliceous organisms as water is expelled upwards during compaction.
Geologists can classify oil shales on the basis of their composition as carbonate -rich shales, siliceous shales, or cannel shales.