Carico Lake turquoise is named after the location of its mines on a dried up lake bed in a high, cool area of Lander County, Nevada. Its clear, iridescent, spring green color is due to its zinc content and is highly unique and collectible. Carico Lake turquoise is also found in a dark blue-green color with a black or brown, spider web matrix. The Mine has been open for sometime now. A fair amount of This turquoise has been recovered. The less common lime green turquoise which is suspect to actually be predominately faustite, is very very valuable due to it rarety and demand. It is hard material. This mine is also known to produce rare psuedomorph clams that are filled with turquoise.