Fluorescent Hanksite Crystal Cluster With Tincalconite After Borax h1909102. Condition is New. Shipped with USPS Priority Mail. This highly fluorescent hanksite Crystal cluster from the mud of Searles Lake California has mud and tincalconite after borax inclusions it weighs 1 lb 15.5 Oz and measures 4 1/8 in by 4 and 1/2 inches by 3 and 3/4 in at its widest point.