Mica was probably used in a mineralogical sense in 1706. Originally "smicka", from the Latin micare - to flash or sparkle - in an allusion to the appearance of the material.
Islassine dates from before the use of mica as a mineral term and is known from at least 1535. Isinglass also referred to the issue of sturgeon fish that also has pearly white scales.
A group of sheet silicates that can be separated into flexible or brittle plates. Contains the True Micas and the Brittle Micas. Also known as the 'mica family'.
|Lepidolite: K (Li, Al) 2-3 (AlSi 3) O 10 (OH) 2|
|Color:||Violet, pink, green|
|Coloring Factor:||Acorn: mother-of-pearl acorn, silk acorn|
|Transparency:||Translucent to Opaque|
Are you looking for cut Gemstones from the Mica Group, then look at MICA GROUP