This is an interesting specimen because it not only has some complex and lustrous micro xls of re-crystallized franklinite, but also allactite (a rare mineral even here) and a few baryte xls – rather uncommon in the zinc ore bodies. But it is really a large (and heavy) micro. The franklinite xls (first and second photos) are, resp., 1.3 and 1.6 mm (max). The allactite (third and fourth photos) spans more than 5 mm altogether. But it is hard to spot with the naked eye because it looks strangely “shaggy” on the outside, even though quite gemmy on the inside. The baryte xls (fifth photo) are <= 1.1 mm. There is another, slightly larger baryte xl nearby. There are also a few more complex franklinite xls. All the faces are equally lustrous and refelective but it is not possible to show that in just a couple of photos. You will need 10-30X to view any of these xls clearly.

The matrix is low calicite “red ore” – grains of reddish willemite with franklinite – anhedral except where re-crystallized. In the macro photo, the red arrow points to baryte.

If you have a good splitter, this could probably be turned into several “real” micros and/or thumbnails. But the association is not common and it is probably best to keep it as is.

Weight 7.7 oz. Single item shipping weight 9.8 oz. Up to 12 oz, this can be combined with other items for the same postage.