SOLD
MD-199600
Ulexite
Miniature, 4.7 x 4.5 x 3.1 cm
Boron, Kramer District, Kern Co., California, USA
SOLD
The borate deposits of California have produced some really beautiful/unusual mineral specimens. Few are as unusual as ulexite, also called "TV rock" for its fiber-optic-like optical properties. This particular specimen is composed of white, knobby masses of parallel-growth fibers. Ex. Jim Minette Collection.