shungite

== English == === Etymology === First described from a deposit near Shunga village in Karelia, Russia, +‎ -ite. === Noun === shungite (countable and uncountable, plural shungites) (mineralogy) A black, lustrous, non-crystalline mineraloid consisting mostly of carbon, used as a pigment in art and an antibacterial water treatment. ==== Usage notes ==== The term shungite was originally used in 1879 to describe a mineraloid with more than 98% carbon. More recently the term has also been used to describe shungite-bearing rocks, leading to some confusion. ==== Derived terms ==== shungitic