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AZMEX06 - Polybasite - $ 4500 SOLD 407 Level, Rayas Mine, Guanajuato, Mexico miniature, 3.7 x 3.1 x 1.7 cm ex. Evan Jones
Accompanied by labels from Dave Bunk and from the personal collection of Evan Jones, this wonderful polybasite exhibits hopper growth, superb crystal form, good luster, and a bronze-like color. This is definitely a competition quality miniature for its symmetry and beauty, as well as the unusual color patina. Just superb!
D05-40 - Polybasite, Pearcite - $ 450 SOLD Guanajuato, Mexico thumbnail, 2.5 x 2 x 1.3 cm ex. Sam Nasser
Lustrous, SUPERSHARP crystals of excellent quality, with sharp crystals in a rosette, and with minor pearceite at the base. Polybasite crystals, not altered or replaced, are rare in this quality. BETTER IN PERSON!
DENV08-22 - Polybasite with Calcite and Stephanite - $ 12500 SOLD Judas Shaft, Fresnillo, Zacatecas, Mexico small cabinet, 8.8 x 4.4 x 2.7 cm
A MAJOR, IMPORTANT specimen of Mexican silver species, with sharp polybasite crystals that are literally the size and aspect of Swiss hematites, so robust that I actually DID fall for the trick when shown the piece (at double this price to get me warmed up for a killer) AS a Swiss hematite. I made some fumbling comment about how I could not sell Swiss hematites in the US so well, but I thought the calcite so neat and unusual, like dhte contrast, and well...my source got me. Apparently the piece turned up at a small show, having come directly from a miner in Mexico up to the show and missing the normal channels such major pieces often get funnelled into. The calcite is a wonderful accent, and I cannot ever recall seeing another Mexican specimen of polybasite with such sheer , amazing contrast. Visually, this leaps out. The sparkling drusy calcite highlights the metallic, lustrous blades so nicely. Small barrel-like stephanites are in association as well (on the back), according to Dr. Terry Wallace who examined the specimen for me at the Denver show. He confirmed for me that the piece came from this small shaft adjoining two slightly different deposits, an aberration which is the reason why you have the calcite and the polybasite in the same place at the same time...normally not seen. This is an important Mexican specimen, and an important silver species specimen. If i can presume, I will say that 10 years ago it would have been quickly sold into the Miguel Romero collection at any price, and fit right in with his museum-level Mexican silver species suite which I have recently acuired fom the University of Arizona Science Center .
MD-120671 - Polybasite - - Archived Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico thumbnail, 2.1 x 1.6 x 1.2 cm.
2.1 x 1.6 x 1.2 cm. A classic and showy thumbnail cluster of moderate-lustre, radial bladed polybasite crystals from a famous Mexican locality - Guanajuato. Ex. Dick Jones Collection.
MD-177532 - Polybasite - - Archived San Juan de Rayas Mine (Rayas Mine; Reyes Mine), Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico thumbnail, 1.7 x 1.3 x 1.1 cm.
1.7 x 1.3 x 1.1 cm. This is a robust, unusually 3-dimensional crystal of polybasite, which is usually thin and slender from this mine. The crystal sits upon a natural pedestal of smaller crystals at its base and is complete all around. Ex. Carlton Davis Collection.
MD-184751 - Polybasite - - Archived Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico thumbnail, 2.2 x 1.2 x 0.3 cm.
2.2 x 1.2 x 0.3 cm. A lustrous, "melted look", intergrown plate of small, metallic-gray polybasite crystals from Guanajuato, Mexico. Ex. Dick Jones Collection.
MD-184768 - Acanthite, Polybasite, Chalcopyrite - - Archived Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico miniature, 3.3 x 3.3 x 3.0 cm.
3.3 x 3.3 x 3.0 cm. A fine specimen of sparkly, gray acanthite pseudomorphs after platy polysbasite crystals and nicely accented by sparkly, golden chalcopyrite microcrystals from the mines of Guanajuato, Mexico. Ex. Dave Stoudt Collection.
MD-191702 - Acanthite, Polybasite, Chalcopyrite - - Archived San Juan de Rayas Mine (Rayas Mine; Reyes Mine), Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico miniature, 3.9 x 3.6 x 3.3 cm.
3.9 x 3.6 x 3.3 cm. A fine and rich silver ore combination specimen from the famous Rayas Mine at Guanajuato, Mexico. Sparkly, golden-yellow bright chalcopyrite microcrystals cover matrix of essentially solid, bladed polybasite. The polybasite blades poking through the chalcopyrite are iridescent and the whole piece is nicely accented by a couple of sharp, gray acanthite crystals. Ex. Dave Stoudt Collection.
MD-196080 - Acanthite, Polybasite, Chalcopyrite - - Archived San Juan de Rayas Mine (Rayas Mine; Reyes Mine), Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico small cabinet, 6.0 x 3.3 x 2.5 cm.
6.0 x 3.3 x 2.5 cm. A superb and rich silver ore combination specimen from the famous Rayas Mine at Guanajuato, Mexico. Sparkly, golden-yellow bright chalcopyrite microcrystals cover matrix of essentially solid, bladed polybasite and blocky acanthite crystals. A couple of quartz rosettes are a nice accent to the gray and gold sulfides. Ex. Dave Stoudt Collection.
MD-197429 - Polybasite, Calcite, Stephanite - - Archived Fresnillo de Gonzalez Echeverria (Fresnillo), Mun. de Fresnillo, Zacatecas, Mexico small cabinet, 8.8 x 4.4 x 2.7 cm.
8.8 x 4.4 x 2.7 cm. A major specimen of Mexican silver species, with sharp polybasite crystals that are literally the size and aspect of Swiss hematites. Apparently the piece turned up at a small show, having come directly from a miner in Mexico up to the show and missing the normal channels such major pieces often get funneled into. The calcite is a wonderful accent, and I cannot ever recall seeing another Mexican specimen of polybasite with such sheer, amazing contrast. The sparkling drusy calcite highlights the metallic, lustrous blades so nicely. Small barrel-like stephanites are in association as well (on the back) according to Dr. Terry Wallace who examined the specimen for me at the Denver show. He confirmed for me that the piece came from this small shaft adjoining two slightly different deposits, an aberration which is the reason why you have the calcite and the polybasite in the same place at the same time…normally not seen. This is an important Mexican specimen, and an important silver species specimen.
MD-203244 - Polybasite - - Archived San Genaro Mine, Castrovirreyna District, Castrovirreyna Province, Huancavelica Department, Peru thumbnail, 2.3 x 1.6 x 1.0 cm.
2.3 x 1.6 x 1.0 cm. A super-sharp and aesthetic thumbnail of iridescent polybasite from the famous San Genaro Mine of Peru and the Allan Young Thumbnail Collection.
MD-203249 - Polybasite - - Archived Colorado, USA miniature, 4.9 x 3.1 x 2.6 cm.
4.9 x 3.1 x 2.6 cm. An old-time, rich and showy silver ore specimen of blocky, euhedral to massive, moderate lustre, reddish-black polybasite from an unknown mine in Colorado. Accompanied by an old, faded, expertly handwritten label. The collection this came out of was a museum stash dating to prior to World War I.
MD-211549 - Polybasite - - Archived Chispas Mine (Pedrazzini mine), Arizpe, Mun. de Arizpe, Sonora, Mexico miniature, 4.7 x 3.6 x 2.3 cm.
4.7 x 3.6 x 2.3 cm. The Chispas Mine of Sonora, Mexico has produced some of Mexico’s and the world’s best and largest specimens of polybasite crystals. This superb, very rich and showy specimen is highlighted by a sharp, lightly iridescent, metallic-bright, 2.2 cm polybasite tablet at the top. The front of this piece is composed entirely of polybasite tablets and the specimen is solid polybasite. The back of the specimen is splendent, massive polybasite with classic "ruby silver" highlights. Specimens of this quality were produced 100 years ago, from about 1900-1910. However, we have no proof, that this piece was collected in that era. This well-known Mexican locale is the subject of a fine article in the current issue of the Mineralogical Record, Vol. 39, #6, November-December, 2008.
MD-247917 - Acanthite, Polybasite - - Archived San Juan de Rayas Mine (Rayas Mine; Reyes Mine), Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico small cabinet, 5.5 x 4.3 x 2.7 cm.
5.5 x 4.3 x 2.7 cm. This is an important silver species specimen with excellent aesthetics and very rich masses of sharp polybasite crystals. The bladed polybasites form clusters atop a natural pedestal of silver-rich matrix, and atop each of the polybasite crystals there are sharp outgrowths of brilliantly metallic, pseudocubic, little acanthite crystals - mostly 1mm in size but forming larger clusters. The polybasites, as do so many from here, have some slight coating of iridescent material or alteration. The stark contrast between these pseudocubic-blocked towers and the bladed polybasite under them is really interesting. Ex. Harold Urish Collection.
MD-266071 - Acanthite, Polybasite - - Archived San Juan de Rayas Mine (Rayas Mine; Reyes Mine), Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico miniature, 4.8 x 4.5 x 2.3 cm.
4.8 x 4.5 x 2.3 cm. Almost a complete floater, this acanthite specimen can be displayed on either side to equal effect. It is very 3-dimensional and treelike, and just sharper than most acanthites from here tend to be. The dark gray crystals are arborescent, with a few exhibiting incipient, hopper growth. The largest crystal is 1.1 cm in length. Some crystals have a thin brassy yellow coating of chalcopyrite, as well as the base of the cluster. Ex. Dr. Miguel Romero Collection.
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