Adamite of this glistening, wet luster was one of the most famous products of the heyday of the Ojuela Mine in the late 1970s and early 1980s. This piece shows two styles of adamite, the "balls" and also gemmy, transparent, freestanding crystals - all in a nicely protected cavity in the matrix. It comes from the collection of Dr. Miguel Romero. This was the most famous collection of Mexican minerals ever put together and is likely to remain so, and to be known as the most important collection of Mexican material, for the foreseeable future. Comes with both the University of Arizona Museum paper label and its clear plastic exhibit label - confirming that this specimen was on exhibit in the Tucson display of the museum for about 10 years, from the late 1990s until March of 2008.