Malachite meaning

măl'ə-kīt'
A light to dark green carbonate mineral, Cu2 CO3 (OH)2 , used as a source of copper and for ornamental purposes.
noun
0
0
A bright green, monoclinic mineral, copper carbonate, Cu2CO3(OH)2, that is an ore of copper and is used as a gem and to make ornamental objects.
noun
0
0
A bright-green monoclinic mineral occurring as a mass of crystals (an aggregate) with smooth or botryoidal (grape-shaped) surfaces. It is often concentrically banded in different shades of green. Malachite often occurs together with the mineral azurite in copper deposits. Chemical formula: Cu2CO3(OH)2.
0
0
(mineralogy) A bright green mineral, a basic copper carbonate, Cu2CO3(OH)2; one of the principal ores of copper.
noun
0
0
A mild green colour, like that of the mineral.

noun
0
0
Advertisement
From olive-taupe to that of a mild to deeply-rich -- at times seemingly translucent -- green colour, like that of the mineral which is present on oxidized copper.
adjective
0
0

Origin of malachite

From Latin molochitis, from Ancient Greek μαλαχή (malakhe, “[leaf of the ... ] mallow plant"). Or, could be from Hebrew מלאך (mal'ach) [ "angel" or "messenger of God" ], or, perhaps hailing from another Ancient Greek term, μαλαχ- [ "fingers" ].

Sentence Examples

  • Copper carbonates are of wide occurrence in the mineral kingdom, and constitute the valuable ores malachite and azurite.

  • In its vivid blue colour it contrasts strikingly with the emerald-green malachite, also a basic copper carbonate, but containing rather more water and less carbon dioxide.

  • Azurite occurs with malachite in the upper portions of deposits of copper ore, and owes its origin to the alteration of the sulphide or of native copper by water containing carbon dioxide and oxygen.

  • Being less hydrated than malachite it is itself liable to alteration into this mineral, and pseudomorphs of malachite after azurite are not uncommon.

  • Occasionally the massive material is cut and polished for decorative purposes, though the application in this direction is far less extensive than that of malachite.

More sentences →

Words near malachite in the Dictionary