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Mineral Specimens with Calcite
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This is a fine example of stalactitic, cave calcite, growth. Colorless, lustrous, translucent, calcite crystals, to 3.0 cm across, have grown on and around the original stalactite. CLASSIC for the locality!
ex. Martin Lewadny
Beautiful cluster of SHARP, GEMMY calcites perched atop stellerite! these came out in the mid-90s, but I have not seen a good one since then. This is a well-balanced miniature of high quality for the find.
This is a fascinating combo specimen with varied textures and colors. Emplaced at the top-left of a limonite matrix is a small area of of lustrous and velvety, rich green spheres of mimetite, to .5 cm across. This is actually minimized in the photo, because of the need to shoot for focus on the wulfenites, but trust me its nice and green up there. Beautiful, caramel-colored, large crystals of lustrous and translucent wulfenite to 1.8 cm in length are perched on the limonite in a seam running through the middle. The effect is dramatic. Many of the wulfenites are doubly terminated, though a few are damaged, please note. An unusual accent are flakelike crystals of stark, pure-white calcite.
Like houses perched on a hillside, SHARP crystals of lustrous and translucent, amber-colored wulfenite to 1.0 cm sit upon cascading, sculptural mounds of velvety green mimetite, in spherical aggregates to .5 cm across. White flakes of calcite are also present. All this on an interestingly-shaped limonite matrix. At least 2 of the wulfenite crystals are also doubly terminated. Overall a striking combination specimen!
Aesthetically nestled in a vug of solid limonite, this is a natural pocket cavity. Protected within is a layer of intense blue rosasite upon which are sparkling, glassy and gemmy, colorless, calcite crystals, to 6 mm across. Many calcites are actually included by rosasite, it seems. A few, tabular, white, 2-3mm barite crystals are scattered on the calcite. The color and texture contrast between the limonite and the rosasite, and to the sparkling lustre of the calcite, is vivid and mesmerizing. It really is "different." This piece is also admittedly priced at a premium for the result of this color and lustre combination - really the most sparkly and visually stunning Ojuela rosasite specimen, overall, that I can recall seeing. Also, such an inclusion is extremely unusual at this mine or any other (most blue in calcites, is aurichalcite).
An undulating, velvety carpet of richly colored, blue-green, rosasite on a matrix of solid limonite. Scattered about on the rosasite are glassy and gemmy, colorless rhombohedra of calcite, to .5 cm across. The specimen has an ethereal beauty about it and is "flowing" in person in a way the photos do not describe very well. Worldwide, rosasite is a rare species and these are rich specimens.
A stunning piece! It is smothered by thick rosasite on all sides but the back. An almost solid base of massive rosasite ultimately leads to a large central mound upon which velvety botryoids of richly colored blue-green rosasite are emplaced ( to 2.0 cm across). The upper half of the specimen is liberally sprinkled with super-glassy and gemmy, colorless rhombohedra of calcite, to 1 cm across. The piece is perhaps the most 3-dimensional in the lot here, and in person is very dramatic and colorful. This is a very imposing and dramatic specimen, significant for the locality and even more, by worldwide standards for this normally rare species.
This gorgeous, sparklin gplate hosts a rolling carpet of intense blue rosasite upon which are sparkling, glassy and gemmy, colorless, calcite crystals, to 6 or 7 mm across. Many calcites are actually included by rosasite, it seems. The color and texture contrast between the limonite and the rosasite, and to the sparkling lustre of the calcite, is vivid and mesmerizing. It really is "different." This piece is also admittedly priced at a premium for the result of this color and lustre combination - really a uniquely sparkly style of Ojuela rosasite specimen, overall (and just a few such were in the pocket). Additionally, there is a single, tabular, white barite crystal perched on the calcite measuring 5mm across. At first glance, this LOOKS like an aurichalcite-included calcite from Bisbee !
An extremely thick and dense, heavy carpet of undulating, velvety, intensely-colored, blue-green rosasite smothers this 3-dimensional knoll of matrix underneath. It is a large and showy specimen. The rosasite is accented by glassy and gemmy, colorless calcite rhombs, to 5mm across scattered about. Rosasite is , overall, a fairly rare species and this is a large and beautiful example with good aesthetics.
A thin carpet of intensely colored, blue-green, botryoidal rosasite is emplaced on both sides of a limonite matrix. Totally covering the rosasite are sparkling, glassy and gemmy, colorless rhombs of calcite, to 6mm across. Many calcites are actually included by rosasite, it seems. The sparkling lustre of the calcite is vivid and mesmerizing. It really is "different" from most others in this pocket or other finds here. Also, such an inclusion is extremely unusual at this mine or any other (most blue in calcites, is aurichalcite). With this specimen, note the unusual multihued blue colors on the display face
An interesting combo specimen featuring flattened , disc-like galena crystals stacked upon matrix, and surrounded by a halo of translucent disc-shaped calcites. This is unusual for Andreasberg, in that I have not seen many galenas from there that are pretty but the place is famous for its wide variety of calcites.
An interesting vintage-1853 piece with several generations of calcite present! One generation of small, discshaped, gemmy calcites has coated a previous generation of extremely elongated "angel-wing" style calcite, making for a fairly dramatic and different specimen from what we normally see from here. I cannot make out the mine name in Andreasberg on the label, but it is indeed from this district.
An excellent representative specimen from this important find of the late 1880s, with an unusual association of spiky calcite crystals perched atop some manganite tips. For size, label, and overall quality, this is a great example without breaking the bank, of one of the most important finds, some say the most important, for the species.
Gorgeous, gemmy, lustrous calcites to about 1 cm cover much of the matrix on this large specimen from one of the world's great calcite localities, in a historic silver mining district. Nice old label, describes sevreal habits present.
A CLASSIC calcite for this locality, with super sharp, hexagonal, crystals showing translucency and color zoning. THe crystals are to just over 1 cm in size. The overall arrangement is very sculptural.
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Rob Lavinsky, rob@irocks.com
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