carbonaceous ironstone

noun

A dark, organic-rich sedimentary rock containing more than 15% iron and significant amounts of plant matter or coallike material.

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Meanings

nouncarbonaceous ironstone (countable and uncountable, plural carbonaceous ironstones)

plural carbonaceous ironstones

  1. countableuncountableA dark, organic-rich sedimentary rock containing more than 15% iron and significant amounts of plant matter or coallike material.
Cite this entry
APA

carbonaceous ironstone. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/carbonaceous%20ironstone

MLA

“carbonaceous ironstone.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/carbonaceous%20ironstone. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “carbonaceous ironstone,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/carbonaceous%20ironstone.

Source: carbonaceous ironstone on Wiktionary, CC BY-SA 4.0.