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9.75 x 5 x 4.7 cm. A colorless, transparent quartz crystal has a distinct and well formed internal phantom whose termination is covered by chlorite. It also appears that there is a patch of reddish-brown goethite on the right side of the internal phantom. Termination is a little asymmetric atop, but complete. Weighs 245 grams.
8.3 x 5 x 5 cm. These intensely lustrous, colorless quartz crystals, with glassy and gemmy surfaces are aesthetically enriched at the base with clay inclusions. The inclusions actually give the specimen a "garden" effect. Very nice old classic from this North Carolina locale.
6.25 x 6.25 x 5 cm. Terminated, colorless quartz crystals, to 6 cm in length, are included by sprays of greenish-gray tourmaline crystals, to 1.5 cm in length. There is even one tourmaline crystal that has pierced the quartz and whose termination is outside the quartz crystal. Interesting and rich inclusion.
9.8 x 4.75 x 5 cm. Something simple but nice: Two parallel growth, glassy and gemmy, colorless quartz crystals, to 7.75 cm in length. It appears to be a complete floater with no visible point of attachment. The crystals are both doubly terminated and they exhibit moderate etching on the bottom faces as well as incipient etching on other faces.
15 x 8.5 x 9 cm. Limpid beauty highlights this slightly smoky quartz crystal. It is 1068 grams of sparkle and lustre. Superior, glassy luster and the gemmy interior allow the viewer to see the garden below created by internal fracturing.
13 x 8 x 5.5 cm. This "alligator" quartz specimen has a great sculptural appearance with multiple complex faces. Darker inclusions along with glassy luster and gemmy areas gives this piece lots of character. The front or display side of the specimen is complete and only the back side is contacted where it was removed from its host rock. As an added measure there is a partially terminated schorl on the side of the quartz, measuring 2.5 cm in length...helps prove this is from the tourmaline districts of Minas Gerais. Weighs 661 grams.
12.5 x 8.9 x 6.4 cm. This mine has produced some of the best casts after Anhydrite that I've seen from the United States. It is covered with dozens of small pale pink, "rosettes" of Rhodochrosite sitting on white casts of Quartz after Anhydrite with Pyrite crystals. This mine is long defunct and these specimens will no longer be seen except from old collections. A great cabinet-sized specimen of this hard to find and very unique material. Specimens of this size and quality from the Sunnyside are now nearly impossible to find on the market, and will never be mined again. Ex. Richard Kosnar Collection.
7.7 x 6.2 x 4.2 cm. The Patch Mine near Central City in Colorado is one of the most classic localities on the front range. Gilpin County is the site of the first discovery of Gold in Colorado, and the Patch Mine (often referred to as the Glory Hole Mine) is a still standing landmark just southwest of Central City. This piece is filled with classic, sharp, lustrous, water-clear, colorless scepter Quartz crystals associated with black tetrahedral Sphalerite crystals on massive Quartz matrix. Colorado collectors will tell you that obtaining specimens from Gilpin County is very difficult because the vast majority of the mining took place before WWII and good pieces simply are not around. Ex. Brian Kosnar Collection.
9.7 x 7.2 x 3.5 cm. Lazulite is a rare magnesium aluminum phosphate, and some of the finest, highly sought after, and best known specimens of this material come from this locality. This area in the Yukon is only accessible for a few months in the summer (it's under snow and ice the rest of the year), and is some of the most treacherous terrain in the world for collecting specimens. This specimen is a decent display piece featuring hundreds of sharp, lustrous, very well formed, monoclinic, deep inky blue color crystals measuring up to 7 mm of Lazulite associated with gemmy brown Quartz crystals on matrix.
21.1 x 10.0 x 6.2 cm. A striking, large cabinet, combination specimen from the Ray Mine of Arizona. This is a totally layered piece, including the matrix, which is mostly layered quartz with malachite. A thick crust of light green malachite is followed by the striking band of emerald-green, dioptase microcrystals. Sparkly, drusy quartz, tinted by the underlying dioptase, covers most of the vuggy surface. Another thinner sequence of dioptase overlain by malachite covers part of the piece. The final, superb accent are the two, rounded, log-like clusters of sparkly, forest-green and light green, primary malachite crystals. This is an impressive, large combination specimen from this noted locale.
9.3 x 6.1 x 4.8 cm. This fine amethyst specimen from the La Sirena Mine at Guanajuato, Mexico is distinctively different, than most you see from any other locality. There are actually three generations of quartz on this piece, which is nicely accented with two small clusters of milky calcite rhombs. The pretty purple amethyst crystals are sheathed in lustrous, frosted quartz on the sides of the crysals. The sharp, amethyst terminations are composed of water-clear, colorless quartz. Looking down onto the crystals gives a surreal phantom-like look, with the amethyst inside of the frosted quartz sides. Uncommonly fine material from this famous locale. Ex. Consie Prince Collection.
9.0 x 6.2 x 4.0 cm. Djurleite is an uncommon copper sulfide closely related to chalcocite. It is very rarely reported and offered from the famous and now-closed mines at Butte. Lustrous, sharp, steel-gray, twinned prisms of djurleite to about 6 mm are richly concentrated in clusters and are complimented by sprays of milky quartz needles and lustrous, brassy pyrite on this superb, old-time specimen from the Steward Mine. Many of the djurleite crystals have interesting, faint, iridescent tarnish. The matrix is mostly pyrite on this specimen. Very seldom available in this richness and quality from this historic locale. Ex. Bill Smith and George Feist (# 2616) Collections and according to the accompanying label, the piece dates to the early 1960s.
6.8 x 5.8 x 1.8 cm. Tiny, lustrous lathes of primary malachite crystals are richly and attractively sprinkled in clusters on the hummocky matrix plate covered with starkly contrasting, sharp, limonite-stained quartz crystals on this classic, old-time specimen from the famous mines at Concepcion del Oro, Mexico. Excellent combination material from this locale. Ex. Bideaux and Mullane Collections.
7.2 x 5.8 x 2.8 cm. Splendent, jet-black sphalerite crystals are beautifully accented with preferential, sparkly, drusy quartz on this classic, old-time plate from Scotland. The large sphalerite is 3.6 cm and there is no damage to the piece. Sharply formed crystals make this is an outstanding example from this old classic Scottish locality. Ex. Mullane Collection.
8.2 x 6.8 x 3.7 cm. A fine hematite specimen from the ancient iron mines at Rio Marina, Elba. Two large, splendent hematite disks cap this dramatic, old-time specimen. The large crystal is 4.0 cm. Milky quartz crystals with a few brassy pyrite pyrithedrons richly cover one side of this very fine two-sided specimen. This is classic, old-time combination material from this historic locality. Ex. Mullane Collection. All Content and Design ©1996-2012 The ArkenstonePowered by http://mineralwebsites.comMineral Specimens by species; or by specimen id. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
share specimen![Quartz from Gouveia, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-261494a.jpg]](db_pics/mdpics/MD-261494a.jpg)
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