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Mineral Specimens with Silver
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12.1 x 9.9 x 5.1 cm. This is a very large sheet of native silver still attached to some of the matrix in which it formed as a vein (you can see this chunk on the back side). The sheet of silver here can hardly be called a leaf, as that suggests fragility - and this is a thick and sturdy sheet of silver. The silver has a pretty iridescence about it from the bornite coating.
1.9 x 1.5 x 1.3 cm. Mineral specimens from the famous Comstock Lode at Virginia City, Nevada are rare today, even in museums. The remoteness of the locality and lack of "showy" specimens precluded high-graders, other than for rich ore. The bonanza silver ores were depleted by 1878. This old-time, very rich silver ore consists of beautifully burnished, curved and curled, silver wires in a matrix of solid acanthite. The free-standing and clustered silver wires are fascinating. Ex. Irv Brown Collection.
1.9 x 0.9 x 0.3 cm. An aesthetic, thick, curved silver wire with a nice patina from the Canadian Keeley Mine of the Cobalt District of Ontario, Canada. A classic, thick Cobalt wire thumbnail from the Irv Brown Collection. It looks like a fishhook or question mark.
5.8 x 4.4 x 1.8 cm. A specimen of solid native silver from one of the greatest silver localities on earth. The silver here is not crystallized, but evidently formed as sheet-like veins in quartz which is no longer present. This is unusual for the locality. Weighs one ounce. Ex. Jaime Bird Collection.
2.8 x 2.1 x 1.5 cm. A superb and aesthetic thumbnail of sharp, cubic silver crystals to 5 mm beautifully set on the tips of the branching, tree-like silver matrix on this historic, old-timer from Kongsberg. Cubic silver crystals are the rarest and most desirable silver crystal forms from any worldwide locality and this specimen has sharp crystals of good quality and patina. Ex. Peter Farquhar and Phil Scalisi Collections.
One of the most attractive and aesthetic Kongsberg miniatures I have seen, with wonderful display qualities! It is complete all around and can be shown any number of ways, from any angle. Now, we have all seen huge pieces, and pricier pieces, but if you collect miniatures anyways or simply don't want to spend 20k-plus on a cabinet piece that is too expensive or just too big and clunky, this could definitely be the one for your collection. I don't like silvers very much in general and even I love the aesthetics on this one! 4 x 3.25 x 3 cm
Bright, skeletal-looking silver specimen with a bit of copper on the lower left. Old material. Front and back views are shown, so you can see it is complete and rather elegant all around. Weight is 59 grams 6.9 x 3.8 x 2.5 cm
A beautiful and aesthetic cockscomb of spinel-twinned silver crystals jutting out of white calcite matrix. 3.0 x 2.1 x 0.9 cm
2.0 x 1.7 x 1.4 cm (largest). An excellent 3-piece Butte set. Silver specimens from Butte are rarely seen and to know the actual mine is even rarer. Tiny, iridescent silver wires richly cover the matrix on the three specimens, which are from the less well-known Nettie Mine.
4.2 x 2.7 x 2.0 cm. Partially etched out of enclosing calcite are crystals including spinel twins of silver, up to 1.0 cm in length. The darker patina is caused by acanthite crystal overgrowths on the silver. The color contrast between the silver, acanthite and calcite is dramatic.
4.6 x 4.3 x 2.9 cm. This particular silver specimen has been partially etched out of white calcite which in turn, has been emplaced on a light gray limestone. The silver is bright with great luster and the crystals, to .5 cm across are mostly spinel twins.
4.5 x 3.9 x 2.4 cm. Perched aesthetically on massive white calcite is silver with variegated patina and luster. The crystals are small but superb: many of them appear in leaf-like or dendritic patterns, up to 1.4 cm in length. There are also a number of matte black acanthite crystals, to 2mm across, perched on silver crystals.
3.2 x 2.8 x 1.6 cm. Among the wires and equant crystals of silver, there are several spinel twins exceeding 1.0 cm in length. The variegated patina is due to crystals of matte black acanthite, to .2 cm across. All of this is dramatically offset by massive white calcite.
5.0 x 3.1 x 2.8 cm. Partially etched out of massive white calcite, this plate of mostly brilliant silver is composed of spinel-twinned crystals, to .5 cm across. There are also a few matte black acanthite crystals, to .2 cm across, perched on silver.
1.6 x 1.3 x 0.6 cm. This thumbnail specimen is composed primarily of crystals and spinel twins, up to .5 cm in length.
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Rob Lavinsky, rob@irocks.com
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share specimen![Silver, Bornite from San Martín Mine, San Martín, Mun. de Sombrerete, Zacatecas, Mexico [db_pics/mdpics/MD-214778a.jpg]](db_pics/mdpics/MD-214778a.jpg)
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![Silver from Balcoll Mine, Falset, Priorat, Tarragona, Catalonia, Spain [db_pics/mdpics/MD-221211b.jpg]](db_pics/mdpics/MD-221211b.jpg)
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![Silver from Balcoll Mine, Falset, Priorat, Tarragona, Catalonia, Spain [db_pics/mdpics/MD-221214b.jpg]](db_pics/mdpics/MD-221214b.jpg)
![Silver from Balcoll Mine, Falset, Priorat, Tarragona, Catalonia, Spain [db_pics/mdpics/MD-221216a.jpg]](db_pics/mdpics/MD-221216a.jpg)