MUSCOVITE MICA SPECIMEN
A large and rustic Muscovite Mica Specimen. Featuring many mica blades clustered together. This lovely silvery Mineral possesses special real scientific properties like electrical, thermal and electromagnetic insulation and shielding. We have measured these properties with a Trifield meter for shielding. Mica is one of the best natural radiation shields.
Mica can be flaky and comes apart in thin sheets much like flexible plastic. It is a popular and unusual mineral that appeals to people of all ages. Muscovite is just one variety of Mica, named for the Russian province of Muscovy, known for its sheet mica. Interestingly during WW2 Germany was the first to produce lab grown Mica. Using thermal control with an applied Electromagnetic Force Perpendicular to the growth plane. This is very interesting considering they used an EMF to control the growth of large flat crystals.
Minas Gerais, Brazil.
17cm x 12cm x 6cm, 1058g.
KAl2(AlSi3O10)(OH)2 MICA GROUP
The Micas are an important group of minerals. interesting is how resistant and durable mica crystals can be. Thin flakes of mica are generally flexible and brittle, resistant, durable in withstanding high temperatures and pressures in metamorphic conditions.
Resisting the punishment of erosional environments. Most people know about the three most common mica minerals. Muscovite, Biotite, and Lepidolite. Less common Micas Glauconite, Paragonite, Phlogopite and Zinnwaldite. The Mica Group is large with over 30 members.