Tanzanite (gem blue Zoisite)
Merelani, Umba Valley, Lelatama Mountains, Arusha Region
2.2 x 1.4 x 1.1 CM (thumbnail)
A Tanzanite crystal with excellent color change. This is well terminated, glassy deep blue to purple crystal in good condition. The tip of the termination is especially transparent and shows a nice blue "cloud" inside. The backside of the crystal shows a more complex area that has stepped faces and is likely a recrystallized contact. A nice specimen of the specie that is reasonably priced
One of the most colorful and attractive of the Uranium minerals, the Copper rich version of Sklowdowskite. This one has the brilliant green needle crystals protected in a vug. The associated species are best seen with magnification but do add some contrast and color. From the famed mine of Musonoi in the Katanga Copper region that produced what are certainly the best examples of the specie more than 20 years ago, this is a good example that will not break the bank.
Enargite -Classic locale
Leonard Mine, 3800 foot level, Butte
5.2 x 4.8 x 3.9 CM (small cabinet/ large miniature)
A cluster of unusually bright, lustrous and sharp Enargite crystals with a few small Pyrite and Quartz on the edges. In excellent undamaged condition with Enargites free standing up to 1.7 CM. A choice, classic Leonard Mine (Butte, Montana) specimen from the golden age of mining there. The flashy luster on this black Copper Sulphide is quite esthetic (and even attractive for a black mineral)compared with the more usual sooty black specimens.