(aq) refers to aqueous, which means: in water. In your case, you have Ba(OH)2 in solution in water http://en.wikipedia.org/wiki/Aqueous. As for your search on Google, just try anything that works. Internet is a wild untamed land where order and rigorous classification do not apply. Wikipedia is usually a good start.
/bÉËsÉËlt/ , /ËbaesÉlt/ , /ËbÃ¦sÉlt/ , ËbaesÉËlt /ËbÃ¦sÉËlt/) or ËbeÉªsÉËlt is a common (extrusive) igneous volcanic rock formed from the rapid cooling of basaltic lava exposed at or very near the surface of a planet. Or moon flood basalt describes the formation in a series of lava. basalt flowsy definition, basalt is an aphanitic igneous rock with less than 20% quartz and less than 10% feldspathoid by volume, and where at least 65% of the feldspar is in the form of plagioclase.
Basalt is a dark-colored, fine-grained, igneous rock composed mainly of plagioclase and pyroxene minerals. It most commonly forms as an extrusive rock, such as a lava flow, but can also form in small intrusive bodies, such as an igneous dike or a thin sill. It has a composition similar to gabbro.The difference between basalt and gabbro is that basalt is a fine-grained rock while gabbro is a coarse-grained rock. Basalt underlies more of Earth's surface than any other rock type. Most areas within Earth's ocean basins are underlain by basalt.he difference between basalt and gabbro is that basalt is a fine-grained rock while gabbro is a coarse-grained rock. Basalt underlies more of Earth's surface than any other rock type. Most areas within Earth's ocean basins are underlain by basalt.