TT96AN2: Very aerial cubo-octahedral Galena crystal, with a very flattened tabular habit and a distinct spinel-law twin. On matrix, with shiny Chalcopyrite crystals with sharp crystal forms, with strong curvatures on faces and edges, and tabular Siderite crystals with a light cream color and white Dolomite crystals.
The specimen was previously in Guenter Grundmann's collection and has been photographed and published as a reference for Siegerland in the magazine ‘Lapis‘ number 7-8/1991, page 30
Vereinigung Mine, Katzwinkel, Altenkirchen (Westerwald), Siegerland, Rhineland-Palatinate/Rheinland-Pfalz  Germany

Specimen size: 3.3 × 3.2 × 2.7 cm = 1.30” × 1.26” × 1.06”

Main crystal size: 1.6 × 1 cm = 0.63” × 0.39”