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Mineral Specimens with Pyrite
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12.5 x 12.0 x 6.5 cm. A fine cabinet specimen from the La Sirena Mine, Guanajuato, Mexico. Highly lustrous, translucent, modified stepped-growth calcite scalenohedrons to 6.0 cm are scattered as a discrete crystal or in clusters on a contrasting matrix covered with lustrous, brassy pyrite crystals. This mine is on the same vein as the famous Rayas Mine. Ex. Dave Stoudt Collection.
7.7 x 5.8 x 3.5 cm. An old-time, superb, mounded combination piece from the famous Groundhog Mine at Vanadium, New Mexico. This rich sulfide specimen is densely covered with mirror-bright, brass-yellow pyrite cubes, chalcopyrite, chalcopyrite-coated, twinned sphalerite crystals and a scattering of porcupine-like, water-clear quartz needles. Ex. Stoudt Collection and according to their catalogue, this piece dates to circa 1956. They purchased this specimen from Don Moore’s Pebble Pups rock shop in Las Cruces in 2001.
3.2 x 3.2 x 2.6 cm. A textbook, beautiful, complete all-around pyritohedron from the Magma Mine and the Richard Gaines Collection. This superb, pristine crystal has mirror-bright, brass-yellow lustre and all of the faces have exquisite striations.
4.8 x 4.3 x 3.7 cm. Two glassy, nearly transparent, intergrown fluorite octahedrons to 2.5 cm are perched atop mounded matrix covered with shimmering, mirror-bright pyrite cubes and a few sphalerite crystals on this fine specimen from the famed late 1980 find at the Huanzala Mine of Peru.
2.0 x 1.9 x 1.7 cm. This is a fine specimen of the rare iron phosphate featuring a wonderful, sharp, lustrous, gemmy, deep green, doubly-terminated crystal group of Ludlamite sitting atop Pyrite matrix.
12.7 x 10.8 x 7.2 cm. This is a very interesting specimen of Limonite forming incredible "casts" after rhombic Siderite and octahedral Pyrite crystals. The sharpness and detail is so amazingly well preserved, yet upon close inspection, one can clearly see that these cavities are hollow inside.
5.5 x 4.5 x 1.8 cm. Richard Kosnar mined the Sweet Home for a few years during the late 1970's and managed to collect some excellent Rhodochrosite specimens. This piece is from one of the last pockets that Rich opened before he was done at the mine. This specimens hosts sharp crystals of Rhodochrosite measuring up to 1.7 cm with great red-pink color with excellent gemminess. They are associated with minor Quartz and lilac cubic Fluorite plus one distinctive striated cube of Pyrite on matrix.
Despite the diminished stature of pyrite due to the tiring flood of specimens from Peru, pyrites of this quality from Colorado are QUITE desirable, and in this case, distinctly different in appearance as well. This floater is as sharp and lustrous as a machine part, and its beauty is enhanced by etched areas that give its form complexity and interest. MUCH BETTER IN PERSON THAN YOU THINK.... 2.6 x 2.4 x 2.1
10.9 x 7.8 x 6.4 cm. This pretty, striated, compound crystal of pyrite is isolated on the bed of milky quartz crystals. There are clusters of pyrites around the sides as well. This piece, from the classic Mexican locality of Zacatecas, came out of the collection of Dave Stoudt - he bought it from a dealer on a trip to Bisbee in 1996.
13 x 12 x 7.5 cm. This is a large cluster of bright, metallic pyrite crystals to over 2 cm along the edge, with beautiful striations on the faces.
11.4 x 6.9 x 2.8 cm. A superb pyrite specimen from China. These crystals are mirror-bright and lustrous. Unlike most large plates from this locale, this one was removed without significant (only minor at the base) damage and is in fine condition.
A striking plate of highly lustrous, mirror-finish striated pyrite cubes from the famous Huanzala Mine of Peru. This piece is pristine, other than normal periphery damage. This is a way above average Huanzala pyrite, despite the fact that there are lots of them out there. 9.8 x 3.6 x 2.7 cm
14.4 x 12.9 x 6.9 cm. A large, ornate and quite unusual Chinese specimen out of the J.R. Glover Collection. The quartz crystals contain little black inclusions of hubeite, a strange sorosilicate mineral only recently identified (found first at the Daye Mine, also in Hubei Province, and named after this province). At some point the quartz crystals here were sprinkled with these little black hubeites, and then growth continued, so they are now enclosed under thin sheet of quartz (rather than being on the surface of the crystals) as inclusions. Shiny golden pyrite adds an attractive accent to the specimen.
An exceptionally large, sharp and fine crystal of pyrite from Peru. Yes, Peru has turned out a lot of pyrites, but whoppers such as this are still outstanding and desirable! Now, it does have some damage to a few lower-facing corners and on the lower-back edge, BUT that being said it displays incredibly well from the front, and is truly impressive. I have really not seen a large peruvian crystal of this modified cubic habit, of this size before...amidst what, tonnes of material!? So, it has a few minor problems but is nevertheless not only showy but i think fairly significant 8.1 x 6 x 5.8 cm
18.9 x 17.9 x 7.4 cm. Here is a very large forest of spiky crystals of shimmering calcite that formed a cast over the original, underlying scalenohedrons of calcite. If you flip the specimens over, you see that the bottom and sides are also covered with these crystals - it is hollow through the center, with crystals spiking out all around it. On the surface of the cream-colored calcite are tiny spheres of pyrite. This is a very unusual, large and pretty specimen from Romania. Ex. Dave Stoudt Collection.
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Rob Lavinsky, rob@irocks.com
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share specimen![Calcite, Pyrite from La Sirena Mine, Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico [db_pics/mdpics/MD-193824a.jpg]](db_pics/mdpics/MD-193824a.jpg)
![Pyrite, Chalcopyrite, Sphalerite, Quartz from Groundhog Mine, Vanadium, Central District, Grant Co., New Mexico, USA [db_pics/mdpics/MD-193870a.jpg]](db_pics/mdpics/MD-193870a.jpg)
![Pyrite from Magma Mine (Magma Superior Mine; Irene claim; Hub claim; Pomeroy; Superior Division; Silver Queen; Monarch claim; Magma Copper Mine; Broken Hill; Apex), Superior, Pioneer District, [db_pics/mdpics/MD-193871a.jpg]](db_pics/mdpics/MD-193871a.jpg)
![Fluorite, Pyrite, Sphalerite from Huanzala Mine, Huallanca District, Dos de Mayo Province, Huánuco Department, Peru [db_pics/mdpics/MD-195427a.jpg]](db_pics/mdpics/MD-195427a.jpg)
![Ludlamite, Pyrite from Huanuni mine, Huanuni, Dalence Province, Oruro Department, Bolivia [db_pics/mdpics/MD-196004a.jpg]](db_pics/mdpics/MD-196004a.jpg)
![Limonite, Siderite, Pyrite from Kami Mine, Ayopaya Province, Cochabamba Department, Bolivia [db_pics/mdpics/MD-196035a.jpg]](db_pics/mdpics/MD-196035a.jpg)
![Rhodochrosite, Pyrite, Fluorite, Quartz from Sweet Home Mine (Home Sweet Home Mine), Mount Bross, Alma District, Park Co., Colorado, USA [db_pics/mdpics/MD-196040a.jpg]](db_pics/mdpics/MD-196040a.jpg)
![Rhodochrosite, Pyrite, Fluorite, Quartz from Sweet Home Mine (Home Sweet Home Mine), Mount Bross, Alma District, Park Co., Colorado, USA [db_pics/mdpics/MD-196040b.jpg]](db_pics/mdpics/MD-196040b.jpg)
![Rhodochrosite, Pyrite, Fluorite, Quartz from Sweet Home Mine (Home Sweet Home Mine), Mount Bross, Alma District, Park Co., Colorado, USA [db_pics/mdpics/MD-196040c.jpg]](db_pics/mdpics/MD-196040c.jpg)
![Pyrite from Climax District, Lake Co., Colorado, USA [db_pics/mdpics/MD-19639a.jpg]](db_pics/mdpics/MD-19639a.jpg)
![Pyrite, Quartz from Concepción del Oro, Mun. de Concepción del Oro, Zacatecas, Mexico [db_pics/mdpics/MD-196781a.jpg]](db_pics/mdpics/MD-196781a.jpg)
![Pyrite from Huanzala Mine, Huallanca District, Dos de Mayo Province, Huánuco Department, Peru [db_pics/mdpics/MD-196799a.jpg]](db_pics/mdpics/MD-196799a.jpg)
![Pyrite from Shangbao Pyrite mine, Leiyang Co., Hengyang Prefecture, Hunan Province, China [db_pics/mdpics/MD-196801a.jpg]](db_pics/mdpics/MD-196801a.jpg)
![Pyrite from Huanzala Mine, Huallanca District, Dos de Mayo Province, Huánuco Department, Peru [db_pics/mdpics/MD-19683a.jpg]](db_pics/mdpics/MD-19683a.jpg)
![Quartz, Hubeite, Pyrite from Ezhou Prefecture, Hubei Province, China [db_pics/mdpics/MD-196850a.jpg]](db_pics/mdpics/MD-196850a.jpg)
![Pyrite from Huanzala Mine, Huallanca District, Dos de Mayo Province, Huánuco Department, Peru [db_pics/mdpics/MD-19727a.jpg]](db_pics/mdpics/MD-19727a.jpg)
![Calcite, Pyrite from Cavnic (Kapnic; Kapnik), Maramures Co., Romania [db_pics/mdpics/MD-197949a.jpg]](db_pics/mdpics/MD-197949a.jpg)