Chalcopyrite with Sphalerite
Huaron Mines, Huaron Mining District, San jose de Huayllay District
6.3 x 5.4 x 1.8 CM (cabinet)
Large well-formed Chalcopyrite crystals surround sharp, bright lustrous black Sphalerites. Ex Gene Meieran collection, this is in excellent condition, from Huaron. An earlier label gives an incorrect locality however this is classic for the mine. The largest complete Chalcopyrite crystal is 4.4 CM across. The display face of this piece is remarkable in that it is undamaged. Chalcopyrite is a very delicate mineral and larger crystals almost always have some "issues". The Sphalerite crystals are complete and undamaged as well, what may look like breakage in some photos is simply complex stepped faces that have epitaxial structures.
Pyrite with Dolomite
Niccioleta Mine, Massa Maratima, Grosseto Province
9.6 x 9.5 x 4.2 CM (cabinet)
A fine and well-developed cluster of Pyrite crystals showing deep striations and bright luster. Ex John Marshall collection, this is a vintage piece from a locality we rarely see, but which was famed for fine Pyrite crystals and some other Sulphides (Stibnite etc). In excellent condition the Pyrites are in clusters and also in well-isolated crystals. This is a solid and stable piece there is no sign of any degeneration or oxidation.
One of the mineral world's great classic pseudomorphs are the Hexagonal Pyromorphite crystals from Kautenbach that are replaced by Galena. These are all very old, vintage specimen most having been collected more than 150 years ago. These are also usually quite expensive and not many are seen in thumbnail size. This is a much more affordable specimen than any we have ever seen offered. We must note this is small and not super perfect, there are some edge chips and rough spots but it does show the desirable form and habit of this venerable mine. A good opportunity to have a fair example of this classic for an unusually good price.
Halite and Tolbachite
Polkowice-Sieroszowice Mine, Glogow County
Lower Silesian Voivodeship,
6.9 x 4.8 x 3.8 CM (cabinet)
Incredible, perfect hoppered cubic crystals of Halite are stacked in an eptaxial cluster. From the recent finds at Polkowice (Poland) this a a textbook example of this form. The crystals have a distinct green color and by analysis this is due to the very rare mineral Tolbachite which is a Copper Chloride not often seen in collections. I consider the better examples of these to be super esthetic and this specimen is excellent by any standard.
A small cabinet of bright drusy Pyromorphite from the famed Wheatley mine (Pennsylvania, USA). The matrix is typical for the mine, the crystals have the dark olive green color that is distinctive to the locale. This specimen is from the collection of WG Levison but unfortunately does not retain any of his labels. This dates to the 1890 era in the collection but the specimen is likely much older, as the mine had closed in the 1860's. The the crystal coverage is quite rich even though the individual crystals are small. With magnification most of these are seen as transparent, sharp and very lustrous.
From a relatively new find (2020-21) by Denis Beals; these are larger rose Garnets from an area of the Sierra de las Cruces. This site has produced a few relatively large Garnets embedded in a hard Rhyolite matrix. Noticeably different in habit and look from the previous finds in this region, this piece is an excellent example. A cluster of two main intergrown Grossular crystals show good luster and contrast well with the matrix. Some contacting is noted, there are geometric imprints of other Garnets and some rougher faces, as was true of every piece we examined from the find. Nevertheless, while this is not a piece for perfectionists it is still a fine and colorful Mexican Garnet unlike anything else from the region.
Wulfenite - USA Classic
Red Cloud Mine, Silver District, Trigo Mts, La Paz County
1.7 x 1.7 x .6 CM (thumbnail)
Brilliant red single Wulfenite crystal perched on a small bit of matrix. In excellent condition, no chips or damage, the color and luster are both top. Classic specimen from the last mining of this iconic locality, just a nice, clean thumbnail that shows why this mine became a legend in the mineral world.
N Chwaning Mine, Kalahari Fields, Kuruman
Northern Cape Province,
3.6 x 1.8 x 1.4 CM (small miniature/ large thumbnail (toenail))
Bright yellow crystals of the rare mineral Jourvaskite on matrix. Although small, up to just 1.5mm, these crystals are huge for the specie. Vivid color and in excellent condition. The backside of the matrix is massive Manganite with a thin layer of Rhodochrosite underlying the Jouravskite, Quartz and what seems to be Xontolite. A choice and pretty specimen of a rare mineral; ex Terry Szenics collection.