mica


mica
Description: mica
Image copyright: http://www.attwater.co.uk/products/mica.asp
The photo at the top is a mineral called mica. On a scale from 1-10 it is a 2.5 to 3 in hardness. It can have a variety of colors like blue, green, black, red, pink rose, silver gray, and a large variety of brown. Mica has been mined in North Carolina since the 1800s. Mica can be made into drywall, electronics, paint and stoves and other things, even toothpaste.

The luster of mica is pearly or metallic. The cleavage of mica is biotite or muscovite. Cleavage is the broken pieces coming off of a mineral rock. Biotite is a black, dark brown, or greenish black micaceous mineral. Muscovite is a silver-gray form of mica occurring in many igneous and metamorphic rocks. Mica in some rocks makes them sparkle. Because of the various colors mica is good for art projects.


http://www.youtube.com/watch?v=P2z99atY8Qk
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This page was edited by josiah (Teacher: Angela Ackley) using Web Poster Wizard.