Q:

Where does mica come from?

A:

Quick Answer

Mica is a metamorphic mineral that comes from volcanoes and hydrothermal vents. It is easily recognized by its thin crystal layers that peel off in sheets. Mica is very shiny and is responsible for the glittery effect in composite rocks such as granite, gneiss and slate.

Know More
Where does mica come from?
Credit: Education Images/UIG Universal Images Group Getty Images

Full Answer

Mica is composed of silicon and oxygen. Biotite, muscovite and boromuscovite are three common variations. Mica is an excellent insulator and has many electrical applications. Mica is white, yellowish, green or gray, and can be found on most continents. The largest deposits are found in India, South Dakota, Russia and Brazil. In addition to its use in electronics, mica has many artistic applications.

Learn More

Related Questions

  • Q:

    How is pumice formed?

    A:

    Pumice is an igneous rock formed by the rapid cooling and depressurization of volcanic magma with a high gas content. It is characterized by a large amount of vesicles formed from gas bubbles in the magma.

    Full Answer >
    Filed Under:
  • Q:

    What is a rock identification key?

    A:

    A rock identification key is a system used to identify rocks. It's usually in the form of a chart or table with several common descriptive properties of rocks.

    Full Answer >
    Filed Under:
  • Q:

    What are crustal plates and how do they move?

    A:

    Crustal plates are large sections of the outer layer of the Earth's surface that move along convection currents in the mantle. There are 10 major plates on the surface, and the tectonic forces behind their movement create earthquakes, volcanoes and tidal waves.

    Full Answer >
    Filed Under:
  • Q:

    How did Hurricane Andrew start?

    A:

    Hurricane Andrew began as a tropical wave that crossed the west coast of Africa into the tropical North Atlantic on August 14, 1992. Two days later, after it passed just south of the Cape Verde islands, the wave became a tropical depression. Tropical Storm Andrew formed August 17 and became a hurricane three days later due to vertical wind shear. The hurricane caused 23 deaths in the United States.

    Full Answer >
    Filed Under:

Explore