SOLD Calcite with Siderite
stock #SOLD AX-22-279
Mancos Shale, Montrose, Montrose County
6.2 x 4.8 x 4.2 CM (cabinet)
Late Summer 2021
Well-defined Calcite rhomb crystals to 2.8CM across, on a contrasting Siderite matrix. The Siderite is botryoidal with a few isolated balls. In excellent condition as seen, the Calcite is fluorescent a good red color. Ex Frank Knaus and Dave Bunk, this is well above the usual quality for these Shale deposits, which we understand are either exhausted or off limits to collecting. A nice Colorado Calcite.
A very fine and unusual miniature specimen that looks like blueberries on an evergreen bush. From a small recent find at Okandawasi (Namibia) in the Kaokoveld. This is composed of needle crystals of primary Malachite in a complex cluster. The Shattuckite is in powder blue balls with a matte luster and are perched on the branches. An unusual form and with very memorable esthetics for these Copper minerals.
SOLD Brookite on Quartz - classic USA
stock #SOLD 21.1-338
Magnet Cove, Hot Springs County
3.4 x 1.5 x .8 CM (small miniature/ large thumbnail (toenail))
Late Summer 2021
A sharp and quite lustrous Brookite crystal 1.1 CM across, with textbook perfect form, is perched on a milky Quartz crystal. The Brookite has an unusual blue iridescence on some faces, though it mostly looks black. A classic locality that is well-known for good Brookites that are very different from those well-known from Pakistan. An older specimen collected before 1969. This could be trimmed to be a thumbnail if desired but it is quite nice as is. The wider faces have complex geometric stepped structures well-presented. There is no damage at all.
Light pink to apricot color Calcites in delicate strays of radiating, acicular crystals in a three dimensional sculpture. In excellent condition, this looks fine from every angle. Typical of these Calcites, this piece is vividly florescent. The specimen hosts two generations of Calcite, the smaller more recent crystals are a brownish color and give a nice contrast.
A complete half nodule of colorful phosphate minerals from this famed, classic US locality. The nodule has a full mineralized edge rim in perfect condition with no chipping or missing bits which is most desired. The color zoning of the bright yellow to greenish Crandallite is especially distinct on this specimen, it has a clear separation line and contrasts well with the inner white and green interior. This piece is from the early excavations at this site by the legendary team of Over and Montgomery. Choice and better in person.
Roselite - well-crystallized
Aghbar Mine, Aghbar, Agdz Cercle, Zagora Province
6.2 x 3.2 x 3.2 CM (small cabinet/ large miniature)
Late Summer 2021
Vivid deep color and highly lustrous, these crystals of Roselite contrast with the Dolomite matrix. The finds at the Aghbar Mine of Roselite, and several other fine Cobalt minerals, are considered to have been the best for these species in the world. The crystals here are translucent to transparent, densely deposited in a protected vug 4.6 CM across.
Adamite crystals in pale green balls scattered on a contrasting red Gossan matrix. In fine condition as seen, the balls are in clusters and a few are fully isolated. Good sparkling luster in the spheres and with nicely fluorescent as well. Adamites from Ojuela are incredibly varied in color and habit, some forms do not exist in any other locality world wide. Modern classics this is an affordable yet very pretty specie and specimen.
A modern classic, an early Xuebaoding type Beryl from Pingwu vintage 2004 season. The Beryl is very glassy the broad faces of the tabular crystal have complex geometric facets from both etching and multiple recrystallizations. The outer narrow faces are sharp and glass-like. Just one narrow edge has some damage not visible from most logical viewing angles but overall the condition is outstanding. The most prominent Albite crystal is a blocky type with pearly luster making a nice contrast. This form of tabular Aquamarine Beryl is rare worldwide but this high elevation locale has almost all of its Beryl in this form.