Wiki information Muscovi:


Muscovite is a phyllosilicate mineral of aluminium and potassium with formula KAl₂(F,OH)₂, or (KF)₂(Al₂O₃)₃(SiO₂)₆. It has a highly-perfect basal cleavage yielding remarkably-thin laminæ which are often highly elastic. Sheets of muscovite 5×3 m have...

Polish–Muscovite War
Military Conflict, Event, War

The Polish–Muscovite War took place in the early seventeenth century as a sequence of military conflicts and eastward invasions carried out by the Polish–Lithuanian Commonwealth, or the private armies and mercenaries led by the magnates, when the...