Boleite on Atacamite, Selenite
Amelia Mine, Boleo District, Municipio de Mulege
9.3 x 8 x 4.2 CM (cabinet)
A fine, huge Boleite crystal showing interpenetration (twinned?) on contrasting matrix. From the recently released stash (2018) of material from the classic Amelia Mine, these were a big surprise in Tucson and were quickly sold out. This is an especially choice piece of this rare mineral with a giant 1.4 CM crystal that is well exposed. Better in person the matrix has been stabilized as is normal for all these since as this matrix is very fragile. The green surface is composed of tiny Atacamite grains that are naturally cemented on the matrix, which is mostly Selenite but also has a few chunks of Anglesite embedded as well. Matrix pieces with this quality and size have not been available for many years.
A neat thumbnail of interlocked rhombs of Rhodochrosite with tiny calcites on some edges. The crystals are complete and in undamaged condition. This is a nice example of the HQLP (High Quality, Low Price) concept. Santa Eulalia over many years produced Rhodochrosite in small finds and unique pockets of many different habits, forms and styles. Perhaps the most diverse Rhodo locale in the world, Santa Eulalia is remarkable and continues to yield small finds of surprising quality.
Great Chalcopyrite crystals are remarkably rare, these are superb, sharp and quite large. Set on a "melted" Galena matrix with scattered crystals of Sphalerite, the Chalcopyrites are perfect, no chips, cracks or any damage. These have a nice patina and dark brassy color that sets off the well defined striations. Textbook perfect forms these show both single crystals and twins in fine detail. We try to grab any great Chalcopyrite crystals from this region. I believe they are some of the best ever found when they are this well defined. In person this is especially impressive and it is one of the most esthetic we have seen. Individual crystals are just under 5 CM, and the contrast with the matrix is strong. This specimen is also a "floater" it is crystalized all around and displays fine from most any angle.
A transparent, glassy single crystal of Kyanite on a small matrix of Quartz. Perfect, complete and very lustrous, this slender crystal comes from a well known Pegmatite and is in remarkable, undamaged condition. With even a weak backlight this glows a rich blue and looks fine from any angle. Kyanite is not a rare mineral but this quality is very uncommon and the proportions are very elegant.
A long list of species on this early (2000) Yaogangxian specimen that features a prominent bright purple Fluorite. The Fluorite is a stepped cube that shows perfectly the stairlike form of this habit. In excellent condition, this has an intense deep color and contrasts with the other species on the specimen. Esthetic and an unusual habit for this famed locality, the stepped form is better known in Green crystals from Shangbao (Hunan Province) but very rare at Yaoganxian.
Barite with Stibnite
Xikuangshan, Lengshijiang, Loudi Prefecture
10.1 x 6.8 x 4.2 CM (cabinet)
A series of lustrous crystals in alignment that forms a cluster much like a winged figure. A few Stibnite crystals are on and in the Barite, but the main attraction is the Barite itself. The crystals show epitaxial arrangement and have stepped modifications on terminal faces. In good condition overall, there are very minor edge rubs found on a few edges but not evident without magnification. A very nice example of this important find and an esthetic arrangement of good transparent Barites.
A classic, well formed English Fluorite that has a prominent, isolated main crystal that is dominant on this specimen. Chalcopyrite and small Quartz crystals are scattered on the display surface. Strong deep color, in fine condition and vividly fluorescent, ex Hitchings collection. This is a pre 1970 specimen and possibly much older, a classic Weardale piece that displays well.
Large, perfect gem clear crystals of Albite with fine textbook form. Ex Rock Currier collection (label # 3856) this shows well the quality of esthetics that Rock was well known for. It is surprising how few collections or even Pegmatite suites we see have a good example of this common Feldspar. These are almost never so esthetic as seen here, this is a striking piece. Albite/ Cleavlandite is a common mineral, but crystals of this size and perfection are just very rare. These crystals are formed as thin hexagonal plates with beveled edges and transverse striations. The whole group is stacked as an epitaxial cluster and shows brilliant glasslike luster. A killer Feldspar, some edges have a dusting of small rosettes of Muscovite that add a nice contrast. Better in person, the individual crystals exceed 5 CM diameter.