Lets stay with the facts, because they are fascinating enough.

- Teotihuacan which translates as “The Place Where Men Become Gods”

- Discovered only 30 years ago, several cellar rooms or chambers have been found that each have ceilings layered with mica.

- Most of the mica is found in South Africa, Brazil, USA and Russia.

- Mica is the name given to a group of silicate minerals that have silicon and oxygen as their two major components. The Mica family of minerals includes several variations based on chemical composition and characteristics. Below are just three of at least 11 common variations:

Biotite
muscovite
boromuscovite

- Mica is a metamorphic mineral.

- the name mica is believed to have come from the Latin word micare which means “to shine.”



Much better than space ships!
------- sooooo -------

What is a mica capacitor?

Mica, a mineral, is one of the oldest dielectric materials used in capacitor construction. There are several kinds of mica, with differing properties, but mica is in general very
stable electrically, mechanically, and chemically.

Mica has the interesting property that its crystalline structure is asymmetrical. For capacitors, mica sheets in the range 0.025–0.125 mm or even thinner are used. All varieties of mica are chemically very stable and inert. Mica does not react with oil, water, most acids, (the exceptions are hydro-fluoric and sulfuric acid) alkalis, and
solvents. Mica’s thermal, electrical, and chemical properties make for excellent capacitors.

This, combined with low inductance designs, result in capacitors that are ideal for high frequency and RF applications. Specification sheets of mica capacitors commonly show parameters plotted into the gagahertz range.
Mica capacitors are currently used in some low power RF designs, and pulse (snubber) applications, but advances in ceramic capacitor performance have slowly eroded mica’s
traditional edge in these areas over the years.
[link to old.iihr.uiowa.edu]