Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A bluish-gray or bluish-black monoclinic mineral of the amphibole group.
from The Century Dictionary.
- noun A bluish or bluish-black mineral belonging to the amphibole or hornblende family, containing 7 per cent, of soda. It is a characteristic constituent of certain crystalline schists.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Min.) A mineral of a dark bluish color, related to amphibole. It is characteristic of certain crystalline rocks.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun mineralogy A mixed
aluminate ofsodium ,magnesium andaluminium that has a characteristic blue colour, and exhibitspleochroism , with thechemical formula Na 2(Mg ,Fe 2+)3Al 2Si 8O 22(OH )2.
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
[German Glaukophan : Greek glaukos, bluish gray + Greek -phanēs, appearing (from phainesthai, phan-, to come to light, appear; see bhā- in Indo-European roots).]
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Examples
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