What is mica?

  • (noun): Any of various minerals consisting of hydrous silicates of aluminum or potassium etc. that crystallize in forms that allow perfect cleavage into very thin leaves; used as dielectrics because of their resistance to electricity.
    Synonyms: isinglass


The mica group of sheet silicate (phyllosilicate) minerals includes several closely related materials having close to perfect basal cleavage. All are monoclinic, with a tendency towards pseudohexagonal crystals, and are similar in chemical composition. The nearly perfect cleavage, which is the most prominent characteristic of mica, is explained by the hexagonal sheet-like arrangement of its atoms.

Read more about Mica.

Some articles on mica:

Silver Mica Capacitor - Types - Clamped Mica Capacitors
... They consisted of sheets of mica and copper foil sandwiched together and clamped ... tolerance and stability than other clamped capacitors since the mica surface is not perfectly flat smooth ... References to mica capacitors from the 1920s always refers to this type ...
MHC Class I Polypeptide-related Sequence A
... sequence A is a protein that in humans is encoded by the MICA gene ... MICA encodes the highly polymorphic MHC (HLA) class I chain-related gene A ... It is thought that MICA functions as a stress-induced antigen that is broadly recognized by NK cells, NKT cells, and most of the subtypes of T cells ...
List Of United States Political Families (M) - The Micas
... John Mica (1943–), Florida State Representative, U.S ... Mica ... Mica (1944–), U.S ...
Silver Mica Capacitor - Types - Silvered Mica Capacitors
... Commonly known as silver mica capacitors, these rendered clamped mica capacitors obsolete ... Instead of being clamped with foils these are assembled from sheets of mica coated on both sides with deposited metal ... volume, since there are no airgaps between plates and mica, the conducting surfaces can be thinner No clamping mechanism is needed Silvered mica capacitors are one of the less popularly used types due to their ...