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Mineral Specimens with Quartz
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1.2 x 0.6 x 0.6 cm. Bright gold, wrapped around a bit of quartz, from the old sites in Grass Valley in California. I did not weigh it because it is about equally divided between quartz and gold - but from the display side, since the quartz is completely wrapped by the gold, it appears to be almost all gold (a few grams).
9.2 x 7.3 x 3.3 cm. Another FINE Marty Zinn piece - a specimen of Blanchard Mine fluorite of the classic "Blanchard Blue" color, with an extremely uncommon and beautiful structure to it: the crystals run through the middle of a matrix of sparkly, snow-white quartz. Blanchard specimens are normally much more "jumbly" than this very aesthetic specimen. What is more, the crystals are BIG - the central one measures 2.3 cm in each direction, which is extremely large for the Blanchard.
9.9 x 7.4 x 4.1 cm. A superb and rare specimen from the collection of Marty Zinn - a fabulous quartz specimen from a locality far better known for its fluorites, sphalerites and calcites. This looks like something from Colorado! But, it IS Dal’negorsk - a gorgeous "V" of two milky quartz crystals distinguished by sidecar subcrystals that run up the sides of the large ones, all the way around.
6.7 x 5.4 x 5.4 cm. A gorgeous and unusual Dal’negorsk specimen out of the collection of Marty Zinn. A single taller quartz crystal rises up in the center, surrounded by smaller quartzes that grow out in all directions. Densely intergrown with the quartz crystals are snow-white poker chip calcites.
9.5 x 9.4 x 6.9 cm. The specimens from the recent mining at this locality has placed these as the best American amethysts ever, and this is a SIGNIFICANT specimen. These absolutely GLOW like a fine Bolivian amethyst. The luster is superb, and condition is absolutely TOP, with all the razor-sharp terminations intact.
14.3 x 10.9 x 6.2 cm. Fluorites from the Sweet Home were overshadowed by their glorious associates, the red rhodochrosites, and were typically seen as association crystals on specimens dominated by rhodo. In this case, you have a large plate on which the fluorites are the star - pretty little light blue razor-sharp cubes, beautifully set off by slender quartz crystals and dark crystals of tetrahedrite. Dave Stoudt acquired this specimen from Collectors Edge back in 1992, when it came out. From the Rainbow Pocket.
7.5 x 5.6 x 5.1 cm. From the collection of Marty Zinn, a really unique and wonderful calcite specimen from Romania. The translucent calcite has formed a compound crystal bursting with hundreds of spiky terminations, isolated aesthetically in the middle of the matrix.
7.3 x 5.4 x 2.9 cm. Check out this remarkable example of skeletal galena - a 1.7-cm crystal whose bizarre form you can see deeply into; on its backside is a gleaming chalcopyrite crystal, and on top of that, a cute little skeletal galena! The galenas and chalcos here are on a bed of milky quartz crystals.
6.3 x 6.1 x 3.4 cm. From the collection of Marty Zinn, a beautiful "flower" of pastel lavender crystals of amethyst, bursting in all directions. There is just a bit of anchoring matrix on back - this is mostly all crystal. One fascinating compound crystal here has five separate terminated sub-crystals sharing a single base!
4.1 x 2.8 x 2.1 cm. A KILLER, brown ankerite crystal disc aesthetically attached to a gorgeous, jackstraw cluster of water-clear, doubly terminated, solution quartz crystals from a small, NEW FIND at the Jeffrey Quarry, near Little Rock, Arkansas. This is a SUPERB, essentially pristine combo and the ankerite crystal is LARGE for the locality and species.
2.7 x 1.7 x 1.3 cm. A DRAMATIC, KILLER thumbnail from the Charlie Key Collection and the Orange River area of Namibia. A super-sharp, pseudohexagonal, water-clear quartz crystal features an incredible, sharp, pyramidal, brick-red hematite phantom.
4.9 x 2.1 x 2.0 cm. A striking, pristine, complete all-around, water-clear, light amethyst crystal with a fantastic, complex termination and dramatic, parallel inclusions. The light striations on the side faces are a beautiful accent. Each rotation of this crystal gives a fascinating, different view of the crystal faces and interior! Choice material from the Dave Mansfield Collection, son-in-law of famed Namibian dealer Sid Pieters.
1.6 x 1.3 x 1.0 cm. Fresnoite is an ULTRA-RARE barium, titanium silicate and this cutie features a 7 mm, gemmy, lustrous, sharp, burnt-yellow, blocky, complex crystal jauntily perched on quartz matrix from a recent, small find of this hard-to-get species.
4.4 x 1.5 x 0.6 cm. Just a wonderfully showy miniature Eagle’s Nest Mine gold. It has a good balance of gold to matrix, and good aesthetics of the gold as well. Tim Blackwood Collection.
7.6 x 4.7 x 4.3 cm. This polished nodule of silicified (quartz-infused) chrysocolla is certainly one of the finest I have seen. The rich blue-green color and the depth of the “gem silica” through the quartz-rich zones are both remarkable.
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Rob Lavinsky, rob@irocks.com
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share specimen![Gold, Quartz from Grass Valley, Nevada City District (Grass Valley District), Nevada Co., California, USA [db_pics/mdpics/MD-170718a.jpg]](db_pics/mdpics/MD-170718a.jpg)
![Fluorite, Quartz from Blanchard Mine (Portalas-Blanchard Mine), Bingham, Hansonburg District, Socorro Co., New Mexico, USA [db_pics/mdpics/MD-171547a.jpg]](db_pics/mdpics/MD-171547a.jpg)
![Quartz from 2nd Sovietskii Mine (2nd Sovietskiy Mine), Dal'negorsk (Dalnegorsk; Tetyukhe; Tjetjuche; Tetjuche), Primorskiy Kray, Far-Eastern Region, Russia [db_pics/mdpics/MD-171548a.jpg]](db_pics/mdpics/MD-171548a.jpg)
![Calcite, Quartz from Bor Pit (Boron Pit; Bor Quarry), Dal'negorsk B deposit, Dal'negorsk (Dalnegorsk; Tetyukhe; Tjetjuche; Tetjuche), Primorskiy Kray, Far-Eastern Region, Russia [db_pics/mdpics/MD-171583a.jpg]](db_pics/mdpics/MD-171583a.jpg)
![Quartz (Var: Amethyst) from Jacksons Crossroads, Wilkes Co., Georgia, USA [db_pics/mdpics/MD-171594a.jpg]](db_pics/mdpics/MD-171594a.jpg)
![Fluorite, Quartz, Tetrahedrite from Sweet Home Mine (Home Sweet Home Mine), Mount Bross, Alma District, Park Co., Colorado, USA [db_pics/mdpics/MD-171678a.jpg]](db_pics/mdpics/MD-171678a.jpg)
![Calcite, Quartz from Boldut Mine, Cavnic (Kapnic; Kapnik), Maramures Co., Romania [db_pics/mdpics/MD-171682a.jpg]](db_pics/mdpics/MD-171682a.jpg)
![Galena, Chalcopyrite, Quartz from Septemvri mine (Deveti Septemvri mine), Madan ore field, Rhodope Mts, Smolyan Oblast, Bulgaria [db_pics/mdpics/MD-171690a.jpg]](db_pics/mdpics/MD-171690a.jpg)
![Galena, Chalcopyrite, Quartz from Septemvri mine (Deveti Septemvri mine), Madan ore field, Rhodope Mts, Smolyan Oblast, Bulgaria [db_pics/mdpics/MD-171690b.jpg]](db_pics/mdpics/MD-171690b.jpg)
![Quartz (Var: Amethyst) from Iraí, Alto Uruguai region, Rio Grande do Sul, South Region, Brazil [db_pics/mdpics/MD-171696a.jpg]](db_pics/mdpics/MD-171696a.jpg)
![Ankerite, Quartz from Jeffrey Quarry, Jeffrey, Pulaski Co., Arkansas, USA [db_pics/mdpics/MD-171698a.jpg]](db_pics/mdpics/MD-171698a.jpg)
![Quartz, Hematite from Orange River, Warmbad, Great Namaqualand, Karas Region, Namibia [db_pics/mdpics/MD-171711a.jpg]](db_pics/mdpics/MD-171711a.jpg)
![Quartz (Var: Amethyst) from Goboboseb Mountains, Brandberg area, Brandberg District, Erongo Region, Namibia [db_pics/mdpics/MD-171714a.jpg]](db_pics/mdpics/MD-171714a.jpg)
![Fresnoite, Quartz from Junnila mine, New Idria District, Diablo Range, San Benito Co., California, USA [db_pics/mdpics/MD-171767a.jpg]](db_pics/mdpics/MD-171767a.jpg)
![Gold, Quartz from Eagle's Nest Mine (Mystery Wind Mine), Placer Co., California, USA [db_pics/mdpics/MD-171825a.jpg]](db_pics/mdpics/MD-171825a.jpg)
![Chrysocolla, Quartz from Live Oak pit (Keystone; Joe Bush; Ox Hide; Thornton; Red Hill; Cyprus Miami), Inspiration Mine, Miami-Inspiration deposit, Inspiration, Miami-Inspiration District, Globe-Miami Dist [db_pics/mdpics/MD-171862a.jpg]](db_pics/mdpics/MD-171862a.jpg)