Dims: 4.29x3.31x3.27" (10.9x8.4x8.3cm)
Wt: 3 lbs (1 kg)
Sterling Hill, Ogdensburg, New Jersey, USA
This large specimen is a classic Franklin/Sterling Hill specimen, as it contains a significant fraction of each of the 4 major minerals found there. One end is nearly covered with franklinite crystals, there are several large zincites, and (under a short-wave UV lamp) the bright orange glow of calcite, and the bright green glow of willemite are apparent. The fluorescent image does not look nearly as good as the specimen appears to the human eye. One face of the specimen shows all four minerals well. As is normal with Franklin specimens, there are no natural crystal surfaces exposed, and it looks rather dirty. Under a loupe, the zincite appears translucent and deep red, and good cleavage surfaces show on some of the franklenites.