Search Results for: Insulating fitting
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
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...
https://en.wikipedia.org/wiki/Muscovite