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Mineral Specimens with Silver
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1.7 x 1.0 x 0.7 cm. Silver crystals to .5 cm across help make up the composition of dendritic or leaf-like clusters. The silver has been partially etched out of the enclosing massive, white calcite.
6.2 x 3.1 x 2.7 cm. Semi-crystalline white calcite is the host for brilliant silver crystals including some spinel twins, to .75 cm in length. A few matte black, acanthite crystals, to .5 cm in length, are perched on the silver crystals. All of this is emplaced on a light gray limestone matrix.
4.1 x 3.5 x 1.6 cm. A superb miniature with fine silver wires etched out of enclosing, massive, white calcite. This silver specimen is composed primarily of spinel twin crystals, to 1.0 cm in length. A few crystals of matte black acanthite, to .2 cm across, are perched on the silver.
4.7 x 3.3 x 2.3 cm. Up close, this specimen is fascinating. Nests of spinel twins, to .5 cm in length along with modified cubes to.25 cm across, cover a matrix of white calcite. Cubic silver crystals are very rare in nature. A few matte black acanthite crystals, to .2 cm across are also present.
3.4 x 2.3 x 1.7 cm. This superb, treelike, arborescent silver specimen with brilliant luster is composed of modified cubes as well as spinel twins, up to .5 cm in length. Many of the silver crystals appear as well formed dendrites. A core of white calcite can be seen.
4.4 x 3.1 x 1.1 cm. This solid specimen of silver is relatively heavy and massive, with a few, brilliant, crystals in evidence atop a mostly spongy plate. There are also a few crystals of matte black acanthite, present.
6.2 x 3.1 x 2.4 cm. This is a beautiful specimen. Where the core of calcite is exposed, it is surrounded by a nest of brilliant luster, spinel twins of silver, to .75 cm in length. The delicacy of the crystals is mesmerizing. The other sides of the specimen have a black and white effect of silver crystals and matte black acanthite crystals to 2mm across.
4.4 x 3.7 x 2.6 cm. Partially etched out of its enclosing calcite matrix, this specimen is composed of spinel twins of silver, to.8 cm in length as well as matte black acanthite crystals to 2mm across. Lustre is good. The color contrast between the silver, acanthite and white calcite, is visually interesting.
5.2 x 4.6 x 2.4 cm. Viewable from two sides, this specimen of silver and acanthite has been partially etched out of enclosing, massive, white calcite. The brilliant luster of the spinel twinned silver, in crystals to .8 cm across is offset by the matte black acanthite crystals, to 2mm across. The color contrast between the calcite and the silver/acanthite is attractive.
6.2 x 3.7 x 3.3 cm. One of the larger pieces recovered, this is a superb nest of wires on massive silver core. The brilliant lustrous silver crystals on this specimen are almost all spinel twins, reaching .8 cm across. Perched on many silver crystals are crystals of matte black acanthite, 1-2mm.
4.5 x 3.2 x 2.5 cm. Like vines growing up and enmeshing the massive, white calcite, are spinel twinned silver crystals to 1.5 cm in length. This specimen has amazingly long spinel twins. Most of the crystals are covered with matte black micro-crystals of acanthite, which gives color contrast. This is a very aesthetic, lively looking piece that seems unusually aesthetic for this find and very reminiscent of old 1960s-1970s Batopilas material from Mexico.
2.2 x 1.6 x 0.7 cm. This specimen came labeled as only being from "Gunnison", and wire Silver has been reported from Gunnison as far back as the 1800's, so it is certainly likely that this is genuine. This slender, curving wire has an attractive form. Ex. Jaime Bird Collection.
2.0 x 0.8 x 0.2 cm. A very fine, classic and sculptural Copper Country "half-breed" with distinct silver and copper components. This old-time specimen looks like a stylized boot and is from the John Saul Collection. The silver is bright and the copper has a nice patina. It is uncommon to have such richness and separation in silver in Michigan half-breeds.
4.4 x 2.9 x 1.1 cm. An old-time, fine, Kongsberg silver and calcite specimen. Nicely burnished silver wires hold together and are impaled in several shards of veined massive calcite. The curved and curled silver wires are a beautiful contrast to the stark milky calcite. Classic and very old Kongsberg material. Ex. Mullane Collection.
3.2 x 2.6 x 2.4 cm. Sharp cubic crystals of silver are decidedly uncommon, almost never seen in nature in macro sized specimens, for the collector. This piece features a number of crude crystals on which perch a sharp, well-developed, 6mm cubic silver crystal. This specimen is an old piece, and comes from the well-known Eric Asselborn collection.
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Rob Lavinsky, rob@irocks.com
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share specimen![Silver from Balcoll Mine, Falset, Priorat, Tarragona, Catalonia, Spain [db_pics/mdpics/MD-221217a.jpg]](db_pics/mdpics/MD-221217a.jpg)
![Silver from Balcoll Mine, Falset, Priorat, Tarragona, Catalonia, Spain [db_pics/mdpics/MD-221217b.jpg]](db_pics/mdpics/MD-221217b.jpg)
![Silver from Balcoll Mine, Falset, Priorat, Tarragona, Catalonia, Spain [db_pics/mdpics/MD-221219a.jpg]](db_pics/mdpics/MD-221219a.jpg)
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![Silver from Balcoll Mine, Falset, Priorat, Tarragona, Catalonia, Spain [db_pics/mdpics/MD-221222a.jpg]](db_pics/mdpics/MD-221222a.jpg)
![Silver from Balcoll Mine, Falset, Priorat, Tarragona, Catalonia, Spain [db_pics/mdpics/MD-221222b.jpg]](db_pics/mdpics/MD-221222b.jpg)
![Silver from Balcoll Mine, Falset, Priorat, Tarragona, Catalonia, Spain [db_pics/mdpics/MD-221224a.jpg]](db_pics/mdpics/MD-221224a.jpg)
![Silver from Balcoll Mine, Falset, Priorat, Tarragona, Catalonia, Spain [db_pics/mdpics/MD-221227a.jpg]](db_pics/mdpics/MD-221227a.jpg)
![Silver from Balcoll Mine, Falset, Priorat, Tarragona, Catalonia, Spain [db_pics/mdpics/MD-221228a.jpg]](db_pics/mdpics/MD-221228a.jpg)
![Silver from Balcoll Mine, Falset, Priorat, Tarragona, Catalonia, Spain [db_pics/mdpics/MD-221228b.jpg]](db_pics/mdpics/MD-221228b.jpg)
![Silver from Balcoll Mine, Falset, Priorat, Tarragona, Catalonia, Spain [db_pics/mdpics/MD-221232a.jpg]](db_pics/mdpics/MD-221232a.jpg)
![Silver from Balcoll Mine, Falset, Priorat, Tarragona, Catalonia, Spain [db_pics/mdpics/MD-221232b.jpg]](db_pics/mdpics/MD-221232b.jpg)
![Silver from Balcoll Mine, Falset, Priorat, Tarragona, Catalonia, Spain [db_pics/mdpics/MD-221237a.jpg]](db_pics/mdpics/MD-221237a.jpg)
![Silver from Balcoll Mine, Falset, Priorat, Tarragona, Catalonia, Spain [db_pics/mdpics/MD-221237b.jpg]](db_pics/mdpics/MD-221237b.jpg)
![Silver from Balcoll Mine, Falset, Priorat, Tarragona, Catalonia, Spain [db_pics/mdpics/MD-221237c.jpg]](db_pics/mdpics/MD-221237c.jpg)
![Silver from Balcoll Mine, Falset, Priorat, Tarragona, Catalonia, Spain [db_pics/mdpics/MD-221244a.jpg]](db_pics/mdpics/MD-221244a.jpg)
![Silver from Balcoll Mine, Falset, Priorat, Tarragona, Catalonia, Spain [db_pics/mdpics/MD-221244b.jpg]](db_pics/mdpics/MD-221244b.jpg)
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