hornblende

IPA: hˈɔrnbɫɛnd

(mineralogy) A green to black amphibole mineral, of complex structure, formed in the late stages of cooling in igneous rock.

Examples of "hornblende" in Sentences

This stone is a volcanic rock called hornblende, of very fine grain, with minute specks of mica.
About Losito we found the trap had given place to hornblende schist, mica schist, and various schorly rocks.
Elsewhere, Precambrian granitic gneiss, Precambrian hornblende gneiss, and fanglomerate are common (Berg and others, 1980).
Dark trappean rocks full of hornblende have in many places burst through these schists, and appear in nodules on the surface.
An examination of the stones which fell at Fort de France showed them to be of a variety of lava called hornblende and andesite.
Strange, scholastic, didactic, passionless, bloodless man, who denotes classes of souls as a botanist disposes of a carex, and visits doleful hells as a stratum of chalk or hornblende!
Six widespread tephras ~0.1–1.0 cm thick with rhyolitic to dacitic glass and/or phenocrysts of feldspar or hornblende are preserved in the glacial lakes of Las Cajas National Park, southern Ecuador.
The remaining rocks from here are richer in lime and iron, and show a series of gradual transitions from micacious granite, through grano-diorite to quartz diorite, with considerable quantities of dark mica, and green hornblende.
Most significant is the presence of the Sinharaja Basic Zone, consisting of hornblende, pyriclasts, basic charnokites, pyroxene amphibolites and scapolite-bearing calc-granulites and blended with small amounts of quartzites, garnet-biotite gneisses and intermediate charnokites.