Basalt

=__Basalt__ =  __5 Interesting Facts:__

1. Basalt makes most of the ocean floor. 2. It takes a couple of days or a couple of weeks for basalt to form from lava. 3. There are 2 different Hawaiian words for basalt, 'a'a and pahoehoe. 4. 1 type of basalt is "Tholeiitic Basalt", which is very poor in Sodium and Silica. 5. Another type of basalt is "Boninite Basalt", which is very high in Magnesium and very low in Titanium.  COLOR OF BASALT!! Basalt can be gray-black. geology.about.com __WHERE BASALT FORMS: __ Most basalt magmas are formed by decompressed melting of the mantle. Basalt is also formed on Earths Moon, Mars, Venus, and on the asteroid Vesta.  __Information:__ Basalt is an igneous rock. The texture of the rock is fine grained. Some characteristics of basalt is it has a glassy surface, smooth, and very dark in color. The most common colors of basalt is gray and black. Basalt is Extrusive and the composition is Mafic. Other descriptions of basalt is that its heavy in weight.

__5 Uses Of Basalt:__

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 * 1) Is used in Aggregate.
 * 2) Is used for flooring tiles.
 * 3) Is used for Rail track ballast.
 * 4) Is used for sculptures.
 * 5) Is used as crushed road stones.