Black Mica - What You Need to Know
About Black Mica Minerals
Black mica is getting popular at present. 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. Iron, oxygen, hydrogen, magnesium, and silicon form into sheets that bond together weakly by the potassium ions. This is sometimes referred to as the iron mica as this is richer in iron compared to the phlogopite. This was called as the black mica to set it apart from the white mica.
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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 4 prism face and 2 pinacoid faces to create 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. Oftentimes, black mica is found in the huge chunks, which are known as books as it resemble as a book with several sheets of pages.
As what was mentioned earlier, black mica is sometimes found in several metamorphic as well as igneous rocks. As an example, this occurs in the lava. This is a vital phenocryst in various forms of lamprophyre. This is also seen in large cleavable crystals particularly in the pegmatite veins like in Virginia, North Carolina, and many 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.
About Black Mica Youtube site
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 today, there are different companies that turned this into an extract, which can be utilized for a wide variety of 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.