malachite

/'mæləkait/

Thân thiện

A polished piece of malachite sits on a geologist's desk.

Definition

Noun: 1. A green mineral: A bright green mineral, often with banded patterns, that is a basic carbonate of copper. It is an important ore of copper and is also valued for ornamental use. 2. A color: A strong, vibrant green color resembling that of the mineral.

Usage

• As a mineral/object: "The museum displayed a beautiful vase carved from a single piece of malachite."
• As a color descriptor: "She painted the accent wall in a rich malachite green."

Examples

• "The geologist identified the green rock as malachite, indicating the possible presence of a copper deposit."
• "The intricate malachite box was a gift from Russia."
• "The artist mixed pigments to achieve the perfect malachite hue for the landscape."

Advanced Usage

• Scientific Context: In geology and mineralogy, malachite is classified as Cu₂CO₃(OH)₂. It often forms in the oxidized zones of copper deposits and is frequently found with azurite, another copper carbonate mineral.
• Historical/Artistic Context: Malachite has been used for thousands of years as a pigment (green verditer) and for decorative inlays, jewelry, and ornamental objects, notably in Russian architecture (e.g., the Malachite Room in the Winter Palace).

Variants and Related Words

• Malachite green: A term for the specific shade of green characteristic of the mineral. It can also refer to a synthetic dye used in biology, unrelated to the mineral.
• Azurite: A blue copper carbonate mineral often found associated with malachite.

Synonyms

• For the color: verdigris green, emerald green, viridian.
• For the mineral (as an ore): copper ore, copper carbonate.

Idioms and Phrases

• There are no common idioms that use the word "malachite" itself. It is primarily a technical/specific noun.

Học thuật

Noun

1. a green or blue mineral used as an ore of copper and for making ornamental objects