Dims: 1.5" x 1.4" x 0.8"(3.8 x 3.6 x 2.0 cm)
Wt: 1.25 oz.(35.5 g)
Ray Mine, Kearney, Arizona, U.S.A.
This piece boasts several Cuprite crystals that are rather large with respect to the size of the entire specimen. They tend to have a warped but definable octahedral shape, and show some obvious damage, though not nearly as much as first appears. It is difficult to accurately determine the dimensions of the largest crystals due to their very warped forms and the fact that they are embedded rather deeply in the matrix; a few of the smaller crystals are quite exposed, however, and measure up to 0.3" (8 mm) in diameter. All have the standard deep red color and adamantine luster of Cuprite and are dimly translucent. They are partially embedded in a matrix rock that is made up of both hematite and what appears to be goethite. Part of the matrix shows tiny but definite crystals with a dark gray coloration. They are a bit too small for me to accurately determine their shapes, even under 10-power magnification. Other areas on the matrix show a more massive habit, while one spot in particuluar seems to have an almost compact, fibrous appearance.