Muscovite is the most common mineral of the mica family. It is an important rock-forming mineral present in igneous, metamorphic, and sedimentary rocks. Like other micas it readily cleaves into thin transparent sheets. Muscovite sheets have a pearly to vitreous luster on their surface.
Muscovite is the most common form of mica. Its name is derived from "Muscovy Glass", which describes thick sheets of transparent mica that were once used as a glass substitute in Russia. Because of Muscovite's abundance, its presence is usually lacking in collections except for it being an accessory mineral to other minerals. However, there are ...
Muscovite is the most common mica, found in granites, pegmatites, gneisses, and schists, and as a contact metamorphic rock or as a secondary mineral resulting from the alteration of topaz, feldspar, kyanite, etc. In pegmatites, it is often found in immense sheets that are commercially valuable.
Muscovite is formed by layers. Muscovite is so delicate when you hold it, it can break. One layer, then another, it keeps building but never grows humongous because people find it and use it.
The mica mineral most similar to muscovite in form, habit and color is phlogopite. Muscovite is usually lighter colored than phlogopite, which tends to be light brown to golden brown in color and is not as transparent as muscovite. The two also differ in their associations.
Description: Muscovite is a common mica, forming silvery to pale-colored flakes most commonly schists and granite pegmatites. It can survive weatheirng, and form sparkling grains in sands and sandstone. ADAMS COUNTY: Muscovite in common in quartzite and granitic rocks at Hamilton Mounds, Sec. 31 T.20N. R.7E and sec. 36 T.20n.
Muscovite definition is - a native or resident of the ancient principality of Moscow or of the city of Moscow. ... (glass)]: a colorless to pale brown form of mica consisting of a silicate of aluminum and potassium. Other Words from muscovite Example Sentences Learn More about muscovite. Keep scrolling for more. Other Words from muscovite ...
Muscovite and sometimes similar species were earlier called mica (Phillips and Kersey, 1706), glimmer (Phillips and Kersey, 1706), and isinglass (1747 according to OED) but all of these terms are still in use to some degree. It should be noted that mica, glimmer, and isinglass were also used for a variety of materials before these given dates ...
As explained above, mica minerals such as chlorite, muscovite, and biotite are the characteristic minerals of schist. These were formed through metamorphism of the clay minerals present in the protolith. Other common minerals in schist include quartz and feldspars that are inherited from the protolith. Micas, feldspars, and quartz usually ...
How Is Mica Formed? There is no definitive evidence to fully explain the formation of mica as the process is still under scientific study as of 2015. However, mica formation is said to be closely associated with the lack of orthoclase feldspar in pegmatites, which is where the mineral is predominantly found.