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Mineral Specimens with Sphalerite
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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.
5.3 x 4.1 x 3.8 cm. Sharp, brassy crystals of pyrrhotite are perched beautifully on clustered bursts of milky quartz crystals. You can also see some crystals of sphalerite down amongst the quartzes.
6.9 x 4.9 x 4.9 cm. This is a classic, older Joplin combination specimen, with sharp crystals of both sphalerite and brassy little chalcopyrites - on a bed of twisted rhombs of white dolomite which peeks through in places. Ex. Feist Collection.
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.
5.2 x 3.4 x 1.7 cm. This specimen features a predominant, sharp, splendent, metallic, brassy-gold colored twinned crystal of Chalcopyrite measuring 1.8 cm associated with lustrous black Sphalerite and gemmy Quartz crystals. This piece came to Rich Kosnar from noted Colorado collector, George Robertson. The exact mine location is the Orphan stope, 1400’ level.
5.7 x 3.3 x 3.3 cm. This is a very distinctive Creede Quartz and sulfide association specimen. The Sphalerite is very gemmy with the typical honey and green color that one is accustomed to seeing from this mine. Both the Sphalerite and Galena are lustrous, and the chalky white Quartz makes for a nice contrast. Exact mine location is the OH vein. This piece came from the Richard A. Kosnar collection and was mined in 1957 by Bob Hartman.
5.9 x 5.9 x 3.8 cm. The fluorites on this specimen from the Elmwood Mine are superb – extremely transparent for the locality. The larger measures just over 2 cm on edge. The fluorites sit on crystallized sphalerite, which is a classic association for this mine.
11.9 x 7.9 x 7.5 cm. A large and superb specimen from Peru, out of the collection of Ed David. Here you have a hill of beautifully crystallized sphalerite, with bursts of slender, transparent, elegant quartz crystals shooting out all over.
6.1 x 4.5 x 2.8 cm. An old-time, superb, mounded combination piece from the Groundhog Mine at Vanadium, New Mexico. Mirror-bright, striated, brassy and lightly iridescent chalcopyrite crystals are richly and aesthetically scattered on a porcupine-like forest of water-clear quartz needles. Ex. Stoudt Collection and according to label and their catalogue, this piece dates to circa 1956.
4.4 x 3.4 x 2.4 cm. A big crystal of sphalerite with a beautiful and distinctive shimmering purple iridescence to it, hard to capture in the photo. The crystal has rough, complete faces on the display side, with the cleaves from removal on the back and bottom. Old material from the Tri-State mining district. Ex. Feist Collection.
4.3 x 3.3 x 2.9 cm. A fine galena spinel twin miniature of this style from Russia. The flattened, spinel twinned crystal stands up perfectly on a natural "base" of quartz, sphalerite, and even a brassy pyrite crystal.
A striking and aesthetic thumbnail of super-lustrous octagonal black sphalerite with an attached protruding quartz needle epitaxially set on another cluster of octagonal sphalerite from the famous 19th of September Mine in Madan, Bulgaria. Very trivial edge damage at one spot on the upper cluster, which is almost invisible. The lustre on this piece MUST BE SEEN TO BE APPRECIATED. It is really quite dramatic. 2.5 x 2.3 x 2.0 cm
Briliant, jet black cluster of radiating sphalerite crystals. Mine now closed, so grab em while you can! 7.4 x 6.4 x 4.6
7.8 x 6.9 x 4.4 cm. A cluster of super-complex, micro-stepped crystals of sphalerite, intricately intergrown with galena in some places such that it is hard to make out which is which. A "snowfall" of tan calcite microcrystals dresses up the specimen nicely. Ex. Dave Stoudt collection.
7.2 x 5.0 x 2.7 cm. Semseyite is an uncommon lead, antimony sulfosalt, seldom found in well-formed crystal groups. This is an excellent, rich vug filled with clusters of sharp sprays of lightly iridescent, metallic-lustre semseyite blades on sphalerite matrix. From near the Type Locality. The card with the piece states that it was acquired from Larry Conklin in 1974.
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Rob Lavinsky, rob@irocks.com
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