Single Benitoite with 'textbook' form. Benitoite is the only mineral that crystallizes in the trigonal bipyramidal form, a form that was only hypothesized prior to it's discovery. Here you have a perfect example of the rare form (and a rare mineral). It looks almost like a crystal model. Thick and complete all around, with Crossite inclusions.

Single Benitoite with near 'textbook' form and Crossite inclusions. Benitoite is the only mineral that crystallizes in the trigonal bipyramidal form, a form that was only hypothesized prior to it's discovery. Here you have a perfect example of the rare form (and a rare mineral). There is one natural step growth on the back of one corner, otherwise is perfectly symetrical on both sides.

Large specimen of interlocking and individual 'cogwheels' of Bournonite associated with black Sphalerite crystals and minor amounts of Pyrite and Quartz crystals.  A very rich sample loaded with Bournonite.  Ex. Chuck Trantham collection.

Large, translucent yellow Wulfenite crystals coated by tiny white Calcite crystals. This style is uncommon and the crystals are large, up to 4.5cm across. There are some incomplete crystals along the edges, but an attractive rarity regardless.

Elongated X-shaped, interpenetrant twin Neptunite crystal perched on matrix. The Neptunite twin is 3.2cm long and complete and undamaged on both sides. The world's best Neptunite is found at this mine, and these x-shaped twins are rare to find.