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Mica is used in plastic automobiles fascia and fenders as a reinforcing material, providing improved mechanical properties and increased dimensional stability, stiffness, and strength. Mica-reinforced plastics also have high-heat dimensional stability, reduced warpage, and the best surface properties of any filled plastic composite.
Muscovite (also known as common mica, isinglass, or potash mica [6]) is a hydrated phyllosilicate mineral of aluminium and potassium with formula KAl 2 (AlSi 3 O 10)(F,OH) 2, or 2 (Al 2 O 3) 3 (SiO 2) 6 (H 2 O). It has a highly perfect basal cleavage yielding remarkably thin laminae (sheets) which are often highly elastic.
Mica. Glittering surfaces have been found to be used since prehistoric times in the arts and in cosmetics. The modern English word "glitter" comes from the Middle English word gliteren, possibly by way of the Old Norse word glitra. [10] However, as early as 30,000 years ago, mica flakes were used to give cave paintings a glittering appearance. [1]
The mineral mica was commonly used at that time for electrical insulation. Because the new product acted as a substitute "for mica", Faber used the name Formica [1] as a trademark. The word already existed as the scientific name for wood ants, from which formic acid and the derivative formaldehyde compound used in the resin were first isolated.
For example, the clay minerals in mudstone are metamorphosed to mica, producing a mica schist. [18] Early stages of metamorphism convert mudstone to a very fine-grained metamorphic rock called slate, which with further metamorphism becomes fine-grained phyllite. Further recrystallization produces medium-grained mica schist.
Fuchsite, also known as chrome mica, is a chromium (Cr)-rich variety of the mineral muscovite, belonging to the mica group of phyllosilicate minerals, with the chemical formula K(Al,Cr) 2 (AlSi 3 O 10)(OH) 2. [2] Trivalent chromium replaces one of the aluminium (Al) atoms in the general muscovite formula producing the apple green hue ...
Ivanka Trump wore diamond jewelry with a total value of $1.1 million at Donald Trump's inauguration. She wore the jewelry with gowns designed by Oscar de la Renta and Givenchy.
Most pegmatites have a composition similar to granite, so that their most common minerals are quartz, feldspar, and mica. [4] [5] However, other pegmatite compositions are known, including compositions similar to nepheline syenite [5] or gabbro. [4] The term pegmatite is thus purely a textural description.