from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A hard, dense, dark igneous rock composed chiefly of plagioclase feldspar, pyroxene, and olivine, and often having a glassy appearance.
- noun A kind of hard unglazed pottery.
from The Century Dictionary.
- noun A volcanic rock occurring widely, and consisting of a triclinic feldspar, together with augite and magnetite or titaniferous iron.
- noun Proposed as a field term, in petrography, for all dark-colored aphanitie, nonporphyritic (aphyric), igneous rocks.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Geol.) A rock of igneous origin, consisting of augite and triclinic feldspar, with grains of magnetic or titanic iron, and also bottle-green particles of olivine frequently disseminated.
- noun An imitation, in pottery, of natural basalt; a kind of black porcelain.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun mineralogy A hard
mafic igneousrock of varied mineral content; volcanic in origin, it makes up much of the Earth's oceanic crust.
- noun A type of unglazed
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun the commonest type of solidified lava; a dense dark grey fine-grained igneous rock that is composed chiefly of plagioclase feldspar and pyroxene
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
Natural rock pools in basalt rock, 5 km. west of Mecatan.
Curious varnished and painted vases, idols in basalt and skeletons were in it.
The sand on Mars is from basalt, which is a darkish gray color.
The youngest volcanic rock is Mt. Lidgbird basalt, which is present in lava flows up to 30 m thick.
The least explosive type of volcano is called a basalt plateau.
For example, the igneous rock called basalt was created at a great depth and contains little feldspar compared to granite, which formed near the surface.
Thus the igneous rock called basalt was created at a great depth, and contains little feldspar compared to granite, which formed near the surface.
These caves are all formed of what learned people call basalt, which means rocks moulded by the action of fire.
In the centre of each revolves a shaft with four arms, to each of which is fastened a block of basalt, that is dragged on the stone bottom of the tub, where broken ore mixed with water is ground to the finest paste.
This beautiful mineral occurs in geodes, or veins of them, near the surface of the basalt, which is the characteristic formation here, and lies on the red sandstone.