Synonyms:
hornblende
Meaning: a green to black mineral of the amphibole group; consists of silicates of calcium and sodium and magnesium and iron
Usage examples
Most of the broad summit is comparatively level and thick sown with crystals, quartz, mica, hornblende, feldspar, granite, zircon, tourmaline, etc., weathered out and strewn closely and loosely as if they had been sown broadcast.