Rock, Serpentinite with Asbestos

Photo of a sample of Serpentinite with Asbestos, bought at Farsala, Greece in 2000. The serpentinite is a metamorphic rock composed mainly of serpentine, varying in color from pale gray to green-black. The rock is fine-grained, compact, without schistosity. The white asbestos is a variant of the mineral serpentine. Asbestos is a group of different silicate minerals with common feature the fibrous form. Today its use is abandoned because inhalation causes lung cancer.