Black mica is the hottest trend in the market today. This is also called as biotite and a common silicate mineral. This has shiny surfaces and like all the mica, this splits into think flakes having a great cleavage. Black mica is a mineral that can be found in igneous rocks. Some of these are metamorphic rocks and granites.
Black mica is also a kind of 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 also known asg black mica. It is because to make a difference from 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 features a system of monoclinic crystal with tabular and prismatic crystal that includes pinacoid termination. This has 2 pinacoid faces and 4 prism face to form a pseudohexagonal crystal.
Although this is not easily seen because of sheets and cleavage, the fracture may not be 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. As an example, this occurs 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 renowned black mica occurrences were also seen in Sudbury and Bancroft. This is also a vital constituent of several metamorphic schists and this forms in perfect compositions over various temperature and pressure.
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. As of now, there are several companies that turned this into an extract that can be used for several purposes. Thus, if you want to try what black mica can provide you, then don’t miss using black mica extract because this is useful for anyone.