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nite, hornblende (the last name being also used as a general term for the whole species). Amphibole is a constituent of many crystalline rocks, as syenite, diorite, most varieties of trachyte, etc. See Hornblende.

A bright green variety of amphibole occurring usually in fibrous or columnar masses.

Of or resembling the mineral amphibole.

A variety of amphibole or of pyroxene, occurring in long and delicate fibers, or in fibrous masses or seams, usually of a white, gray, or green-gray color. The name is also given to a similar variety of serpentine.

A variety of amphibole. See Amphibole.

A mineral of a dark bluish color, related to amphibole. It is characteristic of certain crystalline rocks.

The common black, or dark green or brown, variety of amphibole. (See Amphibole.) It belongs to the aluminous division of the species, and is also characterized by its containing considerable iron. Also used as a general term to include the whole species. Hornblende schist (Geol.), a hornblende rock of schistose structu…

A dark green aluminous variety of amphibole, or hornblende.

A green foliated kind of amphibole, observed in eclogite and some varietis of gabbro.

A white variety of amphibole, or hornblende, occurring in long, bladelike crystals, and coarsely fibrous masses.

Amphibole resulting from the alternation of pyroxene by paramorphism. It is not uncommon in massive eruptive rocks.

The change of pyroxene to amphibole by paramorphism.