Muscovite–Lithuanian Wars and inconclusive siege led to negotiations, which with the aid of papal legate Antonio Possevino ended in the peace of Jam Zapolski in which the Tsar renounced his claims to Livonia and Polotsk but conceded no core Russian territories. The peace lasted for a quarter of a century, until the Commonwealth forces invaded Russia in 1605. Muscovite–Lithuanian Wars The Muscovite–Lithuanian Wars (also known as Russo-Lithuanian Wars, or just either Muscovite Wars or Lithuanian Wars) were a series of wars between the Grand Duchy of Lithuania, allied with the Kingdom of Poland, and the Grand Duchy of Moscow. After several defeats
Muscovite and can be transparent or translucent. It is anisotropic and has high birefringence. Its crystal system is monoclinic. The green, chromium-rich variety is called fuchsite; mariposite is also a chromium-rich type of muscovite. Muscovite is the most common mica, found in granites, pegmatites, gneisses, and schists, and as a contact metamorphic rock or as a secondary mineral resulting from the alteration of topaz, feldspar, kyanite, etc. In pegmatites, it is often found in immense sheets that are commercially valuable. Muscovite is in demand for the manufacture of fireproofing and insulating materials and to some extent as a lubricant. The name