greenstone
Definition
- Noun:
- A type of metamorphic rock: "Greenstone" is a compact, dark-green metamorphic rock, often containing minerals such as chlorite, actinolite, or epidote. It is commonly used in jewelry and ornamental carvings, especially by indigenous cultures in New Zealand and the Pacific Islands.
- Nephrite or jade: In some contexts, "greenstone" refers specifically to nephrite jade, a hard, green stone highly valued for tools, weapons, and ornaments.
Usage Examples
- (A green metamorphic rock used for cultural artifacts.)
- (Nephrite jade used as a gemstone.)
- (A specific type of metamorphic rock.)
Advanced Usage
"Greenstone belt": In geology, a term for a region of metamorphosed volcanic and sedimentary rocks that contain valuable minerals such as gold.
- The gold deposits in the greenstone belt were discovered in the 19th century. (A geological formation rich in minerals.)
"Greenstone carving": The art or practice of shaping greenstone into decorative or functional objects.
- She specializes in greenstone carving, creating traditional Māori hei tiki. (The craft of working with greenstone.)
Variants and Related Words
- Greenstone (n): the base word; no common variants.
- Greenschist (n): a related metamorphic rock, often finer-grained than greenstone.
- The region is known for its greenschist, similar to greenstone but with a different mineral composition. (A rock type in the same family.)
Synonyms
- Nephrite: a specific mineral form of greenstone (jade).
- Jade: a general term for green gemstones, including greenstone.
- Metabasalt: a geological term for metamorphosed basalt, which can form greenstone.
Phrasal Verbs
- None common. "Greenstone" is not typically used with phrasal verbs.
Related Idioms
- "Greenstone of the heart": A poetic or cultural idiom from Māori tradition, referring to something of great personal or spiritual value.
- This pendant is the greenstone of my heart, passed down through generations. (Something cherished and sacred.)