Slightly translucent Lepidolite Specimen. A good quality specimen of Mica mounted on a perspex pad for enhanced display. A bargain price for a Mineral with special properties like awesome electrical, thermal and electromagnetic insulation / shielding. We have personally measured with a Trifield meter for shielding and Mica is one of the best natural radiation shields. This particular specimen is from the collection. This mineral is an ore of Lithium used in batteries mainly and many other items. Powering the electric cars like Tesla.
Western Australia, Australia.
4cm x 3.8cm x 2.1cm, 75g.
The Micas are an important group of minerals. They represent the classic phyllosilicate mineral and are usually the first minerals to be thought of from this subclass of the Silicates Class. Micas are significant rock forming minerals being found in all three rock types: igneous, metamorphic and sedimentary. Because thin flakes of mica are generally flexible and brittle, it is surprising how resistant and durable mica crystals can be in withstanding high temperatures and pressures in metamorphic regimes.
Resisting the punishment of erosional environments. The term “mica” is so familiar to the general public that it is often considered a mineral in itself. Of course it is a group of minerals and most people who are knowledgeable about minerals know the three most common mica minerals. Muscovite, Biotite, and Lepidolite and perhaps a few of the less common Micas Glauconite, Paragonite, Phlogopite and Zinnwaldite. The Mica Group is actually a rather large group of minerals with over 30 members.