There are approximately 1.5 gallons of blood in an average human body. Average adult has 6 liters of blood (just under 1 and a half gallons), the average child has 1.5 liters, and the average infant has 500 mL of blood. Source(s): I'm a biology major.
Muscovite is another common mica mineral that has a single perfect cleavage similar to biotite and phlogopite. It also occurs in the same igneous and metamorphic rocks that biotite is found in. However, muscovite is much lighter in color than biotite, typically being colorless to white.
Schist. If you are looking to brighten up your room and give your countertop that sparkle, then schist material is the way to go. Schist is a metamorphic stone with sufficient amounts of mica allowing the rock to split into thin sheets. Layered mica provides the shiny crystals that also reflect the light.