Dims: 2.2" x 2.0" x 1.3"(5.6 x 5.1 x 3.3 cm)
Wt: 6.40 oz.(181.6 g)
Sunshine #1, Blanchard Mine, Bingham, New Mexico, U.S.A.
Countless tiny Brochantite crystals form one of a series of crusts that coat part of the galena base of this specimen. It occurs in a few different forms: fibrous and radiating, crystalline, and massive. It has a grass-green color and vitreous to dull luster, and it appears to be opaque. There are variations in the green color that concur with changes in both the luster and crystal form, so I am thinking that maybe there is another copper mineral mixed in with the Brochantite. There appears to be a very thin, erratic layer of a blue mineral(probably linarite) underneath the Brochantite layer. It has a waxy luster and discernable but indefinite crystal form. This rests on part of a layer of chalky, dull, beige-colored material that I actually believe may be a massive variety of cerussite! I am, of course, unsure about this, but the color and the environment are right, and there does seem to be a bit of calcite attached to it in one spot. This material almost completely covers the galena, but bits are visible down inside a network of rectangular "holes" that make up a small and very strange framework in the "cerussite" patch. We had a linarite specimen available that was a bit like this piece, but this is, in my opinion, quite a bit more impressive.