You are bidding on a small sample with very nice crystals of neyite on matrix from the type locality. Neyite is very rare, and hard to distiguish from aikinite. Neyite is present here as a spray of needles with stepped faces that are bent and twisted. The other needles on the sample are aikinite, and Dan photographed a tetrahedrite, which he assumed was the neyite. Sample is from Mark Venol in 2007. Comes with Dan's original slide (scanned here) and index card. 

This sample is from the collection of Dan Behnke, long-time friend, micromounter and prodigious photographer. I am pleased to be able to offer selections from his large collection, many of which are illustrated specimens in Rocks & Minerals, The Mineralogiocal Record, Photo Atlas of Minerals and many other publications. All samples from his meticulously catalogued collection will come with his original index card with all notes, photography annotations and other pertinent information, as well as any slides Dan may have taken of the sample with publication notes and date the photo was made.