Cassiterite on Quartz amber making it even more enticing

making it even more enticing

The back of the twin has a “rub” which keeps it from being completely perfect

His catalogue number (1887) is still glued to the base of the specimen

This piece is from a find in July of 2007 at the type locality for the species which was originally discovered along the Contacto and San Jose veins in this mine and first described by Sam Gordon and Mark Bandy

Cassiterite on Quartz amber making it even more enticingThis particular piece is a superb quality Cassiterite from the standpoint of luster, sharpness and the fact that there are TWO distinct twinning habits on the same specimen. An impressive, classic, sharp, lustrous group of black to gemmy golden color cyclic twinned crystals sit atop prismatic white Quartz matrix. The most interesting aspect of the piece is the fact that there are a few RARELY seen drillbit habit twinned groups. Its not common to find