Kraisslite is a rare mineral, having been found only at the Sterling Mine. This is not an “important” specimen, but about 20% of the surface is covered by it. The rest is a mish-mash of sussexite (or fluoborite), chlorophoenicite and tiny zincite xls – all of which are also rare minerals, but none of which is significant.

The first close-up shows an area 6.3 x 4.3 mm from the best “patch” of kraisslite.

The second close-up shows a few tiny, yellow, secondary zincite xls. The two in the center, which look like a di-pyramid, but are almost certainly just two hemimorphic pyramids aligned base to base, measure 0.4 mm tip to tip. A slightly larger hemimorphic pyramid can be seen in the upper left, and there are also some smaller xls. These xls are in a small cavity (marked by an arrow) on the side of the specimen. There are many more, very steep, pyramids of zincite on the “top” (where the kraisslite is), but they are not well formed. You will need 40- 60X on a good scope (better than mine) to see any of these clearly. But natural xls of zincite of any size are rare. The white needles are (probably) chlorophoenicite

In the macro photo, the orange/bronzy stuff is kraisslite, the mottled area at bottom left is zincite, chlorophoeniocite and another mineral (too idistinct to ID). The whitish areas are sussexite or fuoborite. The matrix is calcite poor willemite/franklinite ore.

Weight 7.2 oz. Single item (small box) shipping weight 9.2 oz. Up to a total weight < 12 oz, this can be combined with other items for the same postage.