Black sand is basically a layer on top of sand in areas that have wave energy, in the proximity of volcanoes, and in areas where most of the source rock is mafic, or dark-colored and lacking in a material called silica. Black sand has various types of dark colored minerals that usually weigh more than silica and contain high levels of iron.
Black sand is made around volcanic regions of the world. It is composed to more iron-rich material than white sands, which gives it its black color. Normal sand is high in silica. Rocks that contain a high amount of iron and heavier metals are also known as mafic.
Black sand evolves from ground lava. One area it can be found is on the southeast part of the Hawaiian island which is the most volcanically active.
Click here to cancel reply.
Sorry,At this time user registration is disabled. We will open registration soon!
Don't have an account? Click Here to Signup
© Copyright GreenAnswers.com LLC