Almandine (garnet)

Almandine (garnet)

Almandine, is a species of mineral belonging to the garnet group. It is an iron alumina garnet, of deep red color, almost purple, and is often cut with a convex face, or en cabochon, and is then known as carbuncle.

About Almandine (garnet)

Almandine also known incorrectly as almandite, is a species of mineral belonging to the garnet group. The name is a corruption of alabandicus, which is the name applied by Pliny the Elder to a stone found or worked at Alabanda, a town in Caria in Asia Minor. Almandine is an iron alumina garnet, of deep red color, inclining to purple. It is frequently cut with a convex face, or en cabochon, and is then known as carbuncle. Viewed through the spectroscope in a strong light, it generally shows three characteristic absorption bands. Almandine is one end-member of a mineral solid solution series, with the other end member being the garnet pyrope. The almandine crystal formula is: Fe3Al2(SiO4)3. Magnesium substitutes for the iron with increasingly pyrope-rich...'

Contributions by Luckas-bot, Danylo83, and Chris.urs-o.