The cache is not at the posted co-ordinates.
Turquoise is an opaque, blue-to-green mineral that is a hydrated phosphate of copper and aluminium, with the chemical formula CuAl6(PO4)4(OH)8·4H2O.
Tutankhamun Death Mask
It is rare and valuable in finer grades, and has been prized as a gemstone and ornamental stone for thousands of years because of its unique hue.
Kokopelli - New Mexico
In many cultures of the Old and New Worlds, turquoise has long been considered a holy stone, a bringer of good fortune.
Turquoise Dreaming - used with the artist's kind permission