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Mineral Specimens with Pyrite
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5.7 x 4.8 x 3.1 cm. This is an incredibly rich specimen for this rare species. It comes from the collection of Colorado Bureau of Mines geologist Stanley Korozel via dealer Josef Vajdak, who was until recently on his retirement one of the more noted dealers in rarities. This was said to have been collected in the 1960's. Lustrous, metallic, gray crystals of colusite, to .8 cm in length, are associated with brassy crystals of pyrite, of similar size. Colusite is a rare copper, vanadium, arsenic, tin, antimony sulfide. The entire knob wrapping around the top is SOLID, crystallized colusite with a crystallized region of over 3 x 3 cm.
4.0 x 2.7 x 2.6 cm. A UNIQUE and SHOWY 2-crystal cluster of blocky, sharp, black sphalerite crystals from a very small recent Bolivian find at a NEW locality, the Nanitay Mine. The step-growth sphalerites have a magical chatoyant shimmer that the photos catch only a part of. Fascinating crystals and highly regarded. A super sharp, mirror-bright, brass-yellow, pyrite octahedron is hidden on the back and the contacted area shows the colorful and beautiful iridescence of the sphalerite.
6.4 x 5.6 x 3.9 cm. Very unusual on the market, a large single crystal of pyrite from Romania (when from Romania, most pyrite is seen in small accessory crystal) - a very sculptural compound crystal, with smaller crystals seeming to emerge from the main one. This is an older specimen from the George Feist pyrite collection.
5.9 x 5.1 x 3.1 cm. STUNNING glassy blue crystals of fluorite, with gorgeous bevels and internal blushes of accenting purple, from Naica! This is not from the recent finds at Naica, which were primarily clear to green crystals associated with sphalerite. This cluster of crystals was removed completely from the matrix, so it is all fluorite.
6.8 x 4.5 x 1.2 cm. Pyrite comes from Peru by the ton, but exceptional specimens are still uncommon and sought-after. This is a cluster of gorgeous octahedra with these wonderful bevels along the edges and "cut-glass" modification on the faces. It has a fine shiny-metallic golden luster.
5.4 x 3.3 x 2.3 cm. This pyrite specimen from the classic Butte locality has all the aesthetic qualities of a fine Peruvian one -- but is way, way more uncommon, of course. These are brilliant octahedral crystals, to 3 cm, with minute modifications on their faces. Ex. Gene Meieran sulfide collection.
15.8 x 11.1 x 5.4 cm. A large and glorious pyrite specimen from a classic Mexican locality not well-known for large and glorious pyrite specimens! Collector Dave Stoudt, according to his records, evidently cherry-picked this piece from a dealer before the opening of the 2005 Tucson Show. It features rounded masses of small, tightly integrown crystals of complex form, intergrown with crystals of light grey calcite.
12.4 x 6.8 x 6.6 cm. Here is some interesting material from the famous Bisbee mine that many collectors have not seen: this is sericite, which is basically chalky white volcanic ash - in which are embedded crystals of pyrite that formed within it. Dave Stoudt acquired this piece from the Youngblood estate sale in 1998.
8.4 x 5.8 x 4.6 cm. Inclusions in quartz are not unusual, however in this polished fragment of quartz is a most unusual one. A euhedral crystal of splendent, bright pyrite, 2.0 cm across, is joined by two smaller pyrite inclusions in the quartz. Superb example of this rare high-quality included quartz that came out in the 1950s. Ex. Philadelphia Academy of Natural History collection.
8.4 x 7.4 x 4.3 cm. Pyrites from Elba Island are old European classics! This is a cluster of huge crystals, to 6 cm across, tightly intergrown, with some associated books of bladed hematite. Rare to see them this big and rich, when you see them at all. Ex. Ruggiero Collection.
8.6 x 5.6 x 4.9 cm. If you can get past the fact that they are "just" pyrites, you have to admit that these PERFECT cubes on matrix from Spain are amongst the most striking crystals in the mineral kingdom. Non-mineral people usually cannot believe that they form naturally, in fact! This is a LARGE, PRISTINE cube, wonderfully isolated and fully exposed on the matrix. It measures 2.5 cm on edge and has a mirror-golden luster.
6.5 x 5.1 x 3.8 cm. From the personal collection of dealer Dan Weinrich, who specializes in specimens from the Tri-State District - a superb and dramatic old galena specimen. The dominant crystal measures 2.8 cm along the edge. It has a fine gunmetal luster, and natural bevels on its corners (as do the smaller crystals). Small golden pyrites decorate the matrix around the galenas. As you can see, the galenas sit up just right on the matrix to make a truly aesthetic specimen. Dan sold this to George Feist over a decade ago. From the noted George Feist Midwest collection.
2.1 x 1.8 x 1.3 cm (largest). Though they look more like galena in color and luster (though not in form), these are actually single pyritohedrons that formed individually in chalky sericite at the 1400 Level of the Cole Shaft at the "American Classic" Bisbee locality. This is a cool "set" of 15 crystals without the host rock, in a variety of sizes. Ex. Stoudt collection, from Chuck Youngblood Collection.
4.6 x 4.4 x 2.9 cm. An old Butte pyrite specimen - the modified octahedral crystals are razor-sharp and have a mirror-golden shine to them. The largest measure just over 1.5 cm. You can see a bit of the quart crystal-covered matrix. Ex. John Ydren collection circa 1960s.
Thumbnail. This two crystal, pyritohedron cluster has great aesthetics, textbook form and excellent lustre and striations. Ex. George Elling Collection.
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Rob Lavinsky, rob@irocks.com
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share specimen![Colusite, Pyrite from West Colusa Mine, Butte, Butte District, Silver Bow Co., Montana, USA [db_pics/mdpics/MD-169840a.jpg]](db_pics/mdpics/MD-169840a.jpg)
![Colusite, Pyrite from West Colusa Mine, Butte, Butte District, Silver Bow Co., Montana, USA [db_pics/mdpics/MD-169840b.jpg]](db_pics/mdpics/MD-169840b.jpg)
![Sphalerite, Pyrite from Nanitay Mine, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [db_pics/mdpics/MD-170559a.jpg]](db_pics/mdpics/MD-170559a.jpg)
![Sphalerite, Pyrite from Nanitay Mine, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [db_pics/mdpics/MD-170559b.jpg]](db_pics/mdpics/MD-170559b.jpg)
![Pyrite from Tibles Mts, Maramures Co., Romania [db_pics/mdpics/MD-170599a.jpg]](db_pics/mdpics/MD-170599a.jpg)
![Fluorite, Pyrite, Calcite from Naica, Mun. de Saucillo, Chihuahua, Mexico [db_pics/mdpics/MD-170615a.jpg]](db_pics/mdpics/MD-170615a.jpg)
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![Pyrite from Butte, Butte District, Silver Bow Co., Montana, USA [db_pics/mdpics/MD-170717a.jpg]](db_pics/mdpics/MD-170717a.jpg)
![Pyrite, Calcite from Santa Eulalia District, Mun. de Aquiles Serdán, Chihuahua, Mexico [db_pics/mdpics/MD-171551a.jpg]](db_pics/mdpics/MD-171551a.jpg)
![Pyrite, Sericite from Cole Mine (Cole shaft; Cole No. 3), Bisbee, Warren District, Mule Mts, Cochise Co., Arizona, USA [db_pics/mdpics/MD-171555a.jpg]](db_pics/mdpics/MD-171555a.jpg)
![Pyrite, Sericite from Cole Mine (Cole shaft; Cole No. 3), Bisbee, Warren District, Mule Mts, Cochise Co., Arizona, USA [db_pics/mdpics/MD-171555b.jpg]](db_pics/mdpics/MD-171555b.jpg)
![Pyrite, Quartz from Buenópolis, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-171942a.jpg]](db_pics/mdpics/MD-171942a.jpg)
![Pyrite from Rio Marina, Elba Island, Livorno Province, Tuscany, Italy [db_pics/mdpics/MD-172391a.jpg]](db_pics/mdpics/MD-172391a.jpg)
![Pyrite from Navajún, La Rioja, Spain [db_pics/mdpics/MD-172392a.jpg]](db_pics/mdpics/MD-172392a.jpg)
![Galena, Pyrite from West Fork Mine, Centerville, Viburnum Trend District, Reynolds Co., Missouri, USA [db_pics/mdpics/MD-173479a.jpg]](db_pics/mdpics/MD-173479a.jpg)
![Pyrite from Cole Mine (Cole shaft; Cole No. 3), Bisbee, Warren District, Mule Mts, Cochise Co., Arizona, USA [db_pics/mdpics/MD-173534a.jpg]](db_pics/mdpics/MD-173534a.jpg)
![Pyrite from Butte, Butte District, Silver Bow Co., Montana, USA [db_pics/mdpics/MD-174400a.jpg]](db_pics/mdpics/MD-174400a.jpg)
![Pyrite from Butte, Butte District, Silver Bow Co., Montana, USA [db_pics/mdpics/MD-176464a.jpg]](db_pics/mdpics/MD-176464a.jpg)