American Museum Of Natural History Unveils Spectacular …
Credit: D. Finnin, AMNH. One of the Museum's newest and most spectacular mineral specimens, a 1,000-pound stibnite with hundreds of sword-like, metallic blue-gray crystals sprouting from a rocky base, will go on display April 4. Stibnite (Sb2S3), a compound of the elements antimony and sulfur, occasionally forms nests of delicate, six …