Asbestos Chrysotile and Amphibolite: The name says it all! Crystals can become airborne and lodged in the human lung. Carcinogenic effects occur through persistent irritation of the lung tissues, leading to scarring.
Silica dissolves in water. As groundwater flows past some rocks, the silica can precipitate out and form a dusting of tiny quartz crystals called “drusy.” Malachite, garnet, carnelian and others can show drusy bling like this chrysocolla specimen.
Kammererite from Kop Krom Mine, Kop Daglari, Turkey -- A very colorful specimen of the rare mineral Kammererite (chromium Clinochlore) from Turkey. It features numerous brilliant magenta crystals coating a small matrix of Chromite.