muscovite

media type="custom" key="12568616" align="left"


 * Name of the mineral: Muscovite**


 * Chemical Composition:** Potassium Aluminum Silicate Hydroxide Fluoride


 * Chemical Formula:** KAl2(AlSi3O10)(F,OH)2


 * Luster:** Vitreous to Pearly


 * Transparency:** transparent to translucent


 * Cleavage/Fracture:** perfect in one direction creating sheets or flakes


 * Hardness:** 2 – 2.5


 * Specific Gravity:** 2.8 (average)


 * Streak:** white


 * Other unique characteristics:** insulation in electrical and heat applications


 * In which locations can the mineral be found:** India, Pakistan, Brazil and many places in the USA


 * List 3 uses of the mineral:**
 * used in the past to make circuit boards.
 * used as windows on high-temperature furnaces and ovens
 * is an insulator

Muscovite forms very thin parallel layers, which is one of their most striking features. These layers form because some of the chemicals that make up this mineral bind together to form thin sheets or layers.
 * What did you find most interesting about this mineral?**


 * Resource(s):**
 * []
 * []