Black mica is the hottest trend in the market today. This is known as the biotite and this is a common silicate mineral. This has shiny surfaces and like the majority of micas, this splits into extremely thin flakes together with its perfect cleavage. Black mica is a kind of mineral that can be found in igneous rocks including metamorphic rocks and granites.Black mica is also said as a sheet silicate. Silicon, iron, magnesium, oxygen, and hydrogen form into sheets that are bond together in weak way through the help of potassium ions. This is sometimes known as the iron mica. The reason behind it is that this has more iron in comparison to the phologopite. This was called as the black mica to set it apart from the white mica.
In terms of the black mica properties, like several kinds of mica, this has highly basal cleavage and consisted of flexible sheets or lamellae that quickly flake off. This has a system of monoclinic crystal with prismatic and tabular crystal, which comes with pinacoid termination.
This has 2 pinacoid faces and 4 prism face to form a pseudohexagonal crystal.Even though this is not quickly seen due to the cleavage as well as sheets, the fracture is not even. This also appears greenish to black or brown. Sometimes, it is yellow when it is weathered. This can be also transparent to opaque and has a pearly and vitreous luster. More often than not, black mica is found in huge chunks and these are known as books because they resemble a book that has pages of numerous sheets.
As mentioned above, black mica is found in different igneous and metamorphic rocks. For instance, this happens in the lava. This is a vital phenocryst in various forms of lamprophyre. This is also found in big cleavable crystals especially in the pegmatite veins like in the state of Virginia, North Carolina, and much more. Some known occurrences of black mica include Sudbury and Bancroft in Ontario. This is also an essential constituent of the metamorphic schists. This makes a good composition under varied pressure and temperature.
Most experts continue their studies as well as research regarding black mica as they know that this can be a beneficial mineral in the end. Currently, there are some companies who turned this into an extract, which can be used in various purposes. So, if you want to try what black mica, never hesitate to consider the black mica extract as this can be useful to anyone.