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A classic Old European Collection circa 1900!
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A very unusual old piece from South Australia, with what seems to be hyalite opal (fluorescent, too!) perched atop malachite. The malachite matrix is massive, with some veins of azurite. But, the malachite on top is crystalline, and velvety crystals of malachite contrast with the rounded white hyalite atop. Very old specimen for this locality!
A most unusual specimen with sharp jamesonite crystals, elongated lustrous pyrargyrite, all on a matrix of weirdly crystallized tetrahedrite. This has a label handwritten by Federico Ahlfeld, a very famous mineralogist and
A significant rarity, platy yellow leadhillite crystals on a matrix of sparkling white calcite, from this classic old Italian locale.
An unusually fat little green sphene twin, perched on adularia, just a nice locality piece.
SHARP and super lustrous crystals to 1.3 cm, contrast starkly to the barite association. This is a beautiful miniature, utterly classic, for these important finds in the mid 1880s. Hard to find one this showy and beautiful, for the price range. Those major crystals, by the way, are not damaged.
SHARP crystals of extremely high lustre to 2.5 mm grace the sulfide-rich surface of this specimen. Rare old material from the TYPE LOCALITY !
A super aesthetic piece clearly from the very oldest finds here (note date of 1838(, of sharp, translucent, lustrous witherites perched on a galena matrix. I have not previously seen witherites from here on galena either through ignorance or because they aren't common as I suspect. In any case, the contrast of the metallic galena background sets this off nicely. TYPE LOCALITY !
My god, the COLOR on these mimetite crystals is crazy good...just a fiery red, the best I have seen of this material for color. They are smallish at 6-7mm, but the "Three Amigos" make quite an impact visually as they sit on this contrasting matrix, Superb specimen for quality, and a neat label as well.
A very rich specimen from this famous lead deposit, with rich postachio-green Vauquelinite microxls all over the piece, and minute druses of embreyite microxls as well (they are orange, and seem intermixed quite liberally on the righthand side) . The even rarer cassedanneite is red and although I have not analysed the red micros here, it is possible they are that species. Type Locality for both species!
Apparently this was once studied carefully by somebody who knows a lot more than I do, and whom corrected its ID to this very rare mineral. Mindat confirms this is a valid species and notes: "This mineral is an intermediate member of a homologous series. The thickness of a galena sheet in the structure determines the series member. A very rare mineral." I cannot find a photo of material from Andreasberg but this specimen has crystals which , though tiny brilliant specks, look like the material I have seen from Pribram.
A beautiful association specimen from this classic locale, with sharp , translucent golden-amber siderites to about 1 cm in size.
A sharp miniature featuring a brilliant, lustrous, 1.2-cm crystal in a mass of little acicular mangantie crystals. Unusual!
This label, dated 1835, is the same year the species was formally described to science! I cnanot but find it interesting that this dates so far back. The original label name was "Schriftenz" if I read it right, with a note to the side that it "looked like krennerite" added later (as that species was only identified in 1877) in a different pen. In any case, its a VERY rich, and attractive, specimen of sylvanite with good size, coverage, and excellent crystals for this, the type locality.
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Rob Lavinsky, rob@irocks.com
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