US Marine Corps Forces Central Command (MARCENT) US Marine Forces Central Command (MARFORCENT) US Marine Corps Forces Central Command (MARCENT) is designated as the Marine Corps service component for US Central Command (CENTCOM). MARCENT is responsible for all Marine Corps forces in the CENTCOM area of responsibility.
Aluminium carbide, chemical formula Al 4 C 3, is a carbide of aluminium.
Alkali feldspar has the general formula (K,Na)AlSi3O8, but varies in crystal structure depending on the temperature it formed at. The formula actually is a blend ranging from â¦ all sodium (albite) to all potassium (microcline), but albite is also one endpoint in the plagioclase series so we classify albite there.This mineral is often called potassium feldspar or K-feldspar, because by definition potassium always exceeds sodium in its formula.It comes in three different crystal structures that depend on the temperature it formed at.he formula actually is a blend ranging from â¦ all sodium (albite) to all potassium (microcline), but albite is also one endpoint in the plagioclase series so we classify albite there. This mineral is often called potassium feldspar or K-feldspar, because by definition potassium always exceeds sodium in its formula.