monchiquite

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noun

A black, basaltic igneous rock consisting of a ground mass of automorphic augite and magnetite with many embedded phenocrysts, usually of olivine.

Scrabble 27

Meanings

nounmonchiquite (countable and uncountable, plural monchiquites)

plural monchiquites

  1. countableuncountablechemistryA black, basaltic igneous rock consisting of a ground mass of automorphic augite and magnetite with many embedded phenocrysts, usually of olivine.

    It resembles the analcite basalts of the Highwood Mountains, in Montana, and the monchiquites of Brazil.

    1917, Geological Survey (U.S.), Professional Paper (issue 93, page 84)
    1 more example

    Seven samples from monchiquite dykes analysed chemically by Upton et al. (1992), including trace elements and, for three rocks, Sr and Nd isotope data, were classified on chemical grounds as olivine melanephelinite […]

    2019, A. R. Woolley, Alkaline Rocks and Carbonatites of the World (part 4, page 450)
Cite this entry
APA

monchiquite. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/monchiquite

MLA

“monchiquite.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/monchiquite. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “monchiquite,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/monchiquite.

Source: monchiquite on Wiktionary, CC BY-SA 4.0.