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Mineral Specimens with Silver
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6.4 x 6.2 x 3.7 cm. An extremely rare and old Bisbee specimen of 2.2 cm of tarnished native leaf silver set on limestone matrix from the famous Czar Shaft. The silver is associated with the gray, drusy quartz above the silver. The Czar Shaft closed in 1944, but I would estimate that this piece probably dates to prior to World War I based on what other Arizona collectors have indicated to me. This is historic and very rare material from the Dennis Mullane Bisbee Collection. A Bisbee silver specimen is one of the rarest native silvers from a major ore mine in the USA to track down.
17.2 x 9.2 x 2.5 cm. A sculptural, slabbed and polished, large cabinet specimen of extremely rich, massive silver ore from the Castle Mine of the famed Cobalt-Gowganda Region of Ontario. The matrix is greenstone. Weighs 620 grams or nearly 1.4 pounds. Very rich and old silver ore here.
4.8 x 4.5 x 2.8 cm. A rich and very showy specimen of pseudomorphs of native silver after large dyscrasite crystals. The sculptural pseudos are concentrated on both sides of the upright matrix. The striking, protruding, long needle is 1.8 cm. This excellent specimen is from the Marty Lewadny Collection. Ex. Martin Lewadny Collection.
6.4 x 4.3 x 3.7 cm. This is truly a rare and unusual specimen. It is a significant piece, and I have not seen similar from Mexico in this style. Hoppered growths of large, unusually robust acanthite crystals, to 1.6 cm across, have been altered to silver here. The weight of this piece is clearly much heavier than it would be if these were still acanthite crystals, so it is not just a surface alteration. As an added bonus, some of the interstitial spaces contain chromium chlorargyrite, which is glassy and ivory colored. A unique and important specimen of a rare silver replacement for this locality. Silver pseudomorphs after acanthite are rare enough, and in crystals of this size...surprising. Ex. Dr. Miguel Romero Collection.
9 x 5 x 4.5 cm. A classic silver from this locality in style, but unusual in its heft, robust sturdiness, and that it stands so 3-dimensionally. This specimen from the Dr Miguel Romero collection was on loan exhibition to the University of Arizona Museum for over a decade, until my purchase of this collection in 2008. It was on display in special cases at the museum, and has since been featured in the book "The Miguel Romero Collection of Mexico Minerals" which we sponsored as a special supplement book (published by the Mineralogical Record in December of 2008).
5.7 x 5.5 x 1.1 cm. Smaltite is the arsenic-deficient variety of skutterudite and is quite uncommon worldwide and is rare in display-quality specimens. This is a very rich, sculptural and aesthetic specimen of bubbly/botryoidal, very sparkly, silvery-bright smaltite microcrystals on a very thin sheet of native leaf silver. Exceptionally rich ore here. This is exceptional quality material from the renowned Cobalt-Gowganda area of Ontario. Weighs 72 grams.
4.2 x 3.7 x 2.5 cm. This piece was found around January of 2008, and is one of the more eye-catching Silvers from Porco that I have seen. It features a fine, good sized wire flaring out of a Sphalerite and Pyrite matrix. This is a great miniature specimen from a classic Bolivian locality. The mine at Porco is the oldest and most significant Silver mine in Bolivia, and obtaining specimens is next to impossible because miners rarely bring out anything for sale, as the mine is a large commercial production, and virtually everything goes into the crusher. Most everything that evades the crusher is usually taken out of Bolivia by a geologist who has an "in" at the mine. This is why it is so difficult to obtain any good Silvers from Porco.
4.8 x 4.8 x 3.4 cm. A fine, very rich nest of bright, beautifully burnished spinel-twinned and hackly silver crystals from the famous finds at Batopilas in the late 1960s. This excellent piece shows well from all sides and the white calcite and matrix are nice accents. This is a very thick specimen from Batopilas, as most specimens were etched from thin calcite veins. Ex. Jaime Bird Collection. Weighs 77 grams.
A wonderful thumbnail of MOROCCAN wire silver! The tightly-bound wires rise in a gentle curve, with loose, curly single wires at the top and bottom. Unusually thick and aesthetic for the locality , this makes a superb thumbnail specimen. 2.0 x 0.7 x 0.5 cm
A RICH specimen loaded with natural Colorado silver from the classic Creede locality -- precious metal specimens such as this from classic old mining towns evoke images of the wild, wild west! This is from the collection of noted Collector George Fisher (has his marking on the back) 8.2 x 6.9 x 5.0 cm
This is a large, thick, rich and heavy (almost 3 ounces or 84 grams) specimen of SOLID SILVER from Batopilas, mined in the 70s. Looked at closely, it is a honey-comb of actually quite bright natural silver, with a silver-gold patina that is Brighter and prettier in person! Fully crystallized! 6.5 x 5.3 x 3.7 cm
A superb "feather" of Australian silver, crystallized from top to bottom! These specimens are among the most elegant of silvers, and this is a fine miniature. 4.8 x 0.7 x 0.6 cm
A very rich silver/copper "half-breed" from Michigans Keweenaw Peninsula or Copper Country. This piece is exceptional, in that, most of the specimen is silver and not copper. The silver percentage in most ''half-breeds" is usually much lower. Three-quarters of the front of the specimen is silver, while the back is mostly copper, with silver visible on the left fringe and top of the piece! weight: 18 grams. 3.0 x 1.7 x 1.0 cm
A showy CABINET-SIZED sliced nodule of nearly solid silver ore with a bit of quartz from Cobalt, Ontario. Most of these end up in the smelter! 11.4 x 7.0 x 2.0 cm
3.7 x 2.8 x 1.1 cm. This piece came from a new find at Porco about 8 months ago (2009). It is a good quality group of crystalline Silver with some pseudo-wire crystals forming a very attractive specimen. This is a good toenail specimen from a classic Bolivian locality. The mine at Porco is the oldest and most significant Silver mine in Bolivia, and obtaining specimens is next to impossible because miners rarely bring out anything for sale, as the mine is a large commercial production, and virtually everything goes into the crusher. Most everything that evades the crusher is usually taken out of Bolivia by a geologist who has an "in" at the mine, or sometimes a group of brave miners risk losing their jobs by sneaking out a handful of specimens to raise a little extra money to feed their families.
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Rob Lavinsky, rob@irocks.com
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share specimen![Silver from Czar Mine (Czar Shaft), Copper Queen Mine (Halero Mine), Queen Hill, Bisbee, Warren District, Mule Mts, Cochise Co., Arizona, USA [db_pics/mdpics/MD-264108a.jpg]](db_pics/mdpics/MD-264108a.jpg)
![Silver from Czar Mine (Czar Shaft), Copper Queen Mine (Halero Mine), Queen Hill, Bisbee, Warren District, Mule Mts, Cochise Co., Arizona, USA [db_pics/mdpics/MD-264108b.jpg]](db_pics/mdpics/MD-264108b.jpg)
![Silver from Czar Mine (Czar Shaft), Copper Queen Mine (Halero Mine), Queen Hill, Bisbee, Warren District, Mule Mts, Cochise Co., Arizona, USA [db_pics/mdpics/MD-264108c.jpg]](db_pics/mdpics/MD-264108c.jpg)
![Silver from Castle Mine (Castle-Trethwey Mine), Haultain Township, Gowganda area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada [db_pics/mdpics/MD-264138a.jpg]](db_pics/mdpics/MD-264138a.jpg)
![Silver, Dyscrasite from Příbram, Central Bohemia Region, Bohemia (Böhmen; Boehmen), Czech Republic [db_pics/mdpics/MD-264163a.jpg]](db_pics/mdpics/MD-264163a.jpg)
![Silver, Dyscrasite from Příbram, Central Bohemia Region, Bohemia (Böhmen; Boehmen), Czech Republic [db_pics/mdpics/MD-264163b.jpg]](db_pics/mdpics/MD-264163b.jpg)
![Silver, Acanthite from San Juan de Rayas Mine (Rayas Mine; Reyes Mine), Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico [db_pics/mdpics/MD-266080a.jpg]](db_pics/mdpics/MD-266080a.jpg)
![Silver from New Nevada Mine (Nevada Valenciana), Cerro San Antonio, San Miguel, Batopilas, Andres del Rio District, Mun. de Batopilas, Chihuahua, Mexico [db_pics/mdpics/MD-266124a.jpg]](db_pics/mdpics/MD-266124a.jpg)
![Skutterudite (Var: Smaltite), Silver from Cobalt-Gowganda region, Timiskaming District, Ontario, Canada [db_pics/mdpics/MD-266164a.jpg]](db_pics/mdpics/MD-266164a.jpg)
![Skutterudite (Var: Smaltite), Silver from Cobalt-Gowganda region, Timiskaming District, Ontario, Canada [db_pics/mdpics/MD-266164b.jpg]](db_pics/mdpics/MD-266164b.jpg)
![Silver from Porco, Agua de Castilla, Antonio Quijarro Province, Potosí Department, Bolivia [db_pics/mdpics/MD-266422a.jpg]](db_pics/mdpics/MD-266422a.jpg)
![Silver from Porco, Agua de Castilla, Antonio Quijarro Province, Potosí Department, Bolivia [db_pics/mdpics/MD-266422b.jpg]](db_pics/mdpics/MD-266422b.jpg)
![Silver, Calcite from New Nevada Mine (Nevada Valenciana), Cerro San Antonio, San Miguel, Batopilas, Andres del Rio District, Mun. de Batopilas, Chihuahua, Mexico [db_pics/mdpics/MD-266945a.jpg]](db_pics/mdpics/MD-266945a.jpg)
![Silver from Imiter Mine, Boumalne-Dadès, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco [db_pics/mdpics/MD-26901a.jpg]](db_pics/mdpics/MD-26901a.jpg)
![Silver from Creede, Creede District, Mineral Co., Colorado, USA [db_pics/mdpics/MD-27111a.jpg]](db_pics/mdpics/MD-27111a.jpg)
![Silver from New Nevada Mine (Nevada Valenciana), Cerro San Antonio, San Miguel, Batopilas, Andres del Rio District, Mun. de Batopilas, Chihuahua, Mexico [db_pics/mdpics/MD-27116a.jpg]](db_pics/mdpics/MD-27116a.jpg)
![Silver from Elura Mine (Endeavor Mine), Booroondarra, Cobar, Robinson Co., New South Wales, Australia [db_pics/mdpics/MD-27118a.jpg]](db_pics/mdpics/MD-27118a.jpg)
![Silver, Copper from Keweenaw Co., Michigan, USA [db_pics/mdpics/MD-27133a.jpg]](db_pics/mdpics/MD-27133a.jpg)
![Silver from Coleman Township, Cobalt area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada [db_pics/mdpics/MD-27143a.jpg]](db_pics/mdpics/MD-27143a.jpg)
![Silver from Porco, Agua de Castilla, Antonio Quijarro Province, Potosí Department, Bolivia [db_pics/mdpics/MD-271557a.jpg]](db_pics/mdpics/MD-271557a.jpg)