Dims: 1-1/4" x 1-1/4" x 1/4"
Wt: 20 g. w/ base
Majuba Hill, Pershing Co., Nevada, U.S.A.
A crust of dark blue Clinoclase covers about 1/3 of a face of the host rock on this lovely specimen. The crust likely formed in a crevice between the host rock and another base rock, with crusts forming on both surfaces and growing into each other, thus making it difficult to see crystal structure. However, the crust did not connect completely in some areas, so some of the dark blue needles are visible, if a little small. Given their blue color and the brown base rock, the needles seem to be the only instant way to discern this mineral from azurite. It's a pretty little specimen of an unusual mineral.