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Mineral Specimens with Quartz
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7.7 x 6.8 x 2.4 cm. Two wonderful, doubly-terminated quartzes infused with vibrant, intense, robust golden crystals of rutile. This is an unusually high quality rutilated quartz specimen, and the gist is not conveyed as well in the photo as I would wish. It is really much more impressive in person. The quality of the quartz and the rutile is both high - and clusters are very uncommon.
MD-215471 - Lepidolite, Guimarãesite, Quartz - - Archived
Guimarãesite occurrence, Piauà valley, Taquaral, Itinga, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil
cabinet, 12.8 x 8.2 x 7.9 cm.
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12.8 x 8.2 x 7.9 cm. This specimen has two faces, one pretty and one rare. It is a solid chunk of shard quartz, completely re-healed all around and thus a floater, that is draped by thick, brilliant yellow lepidolite clusters all over the topside. The lepidolite is wonderful for this find. As a bonus, on the bottom side, you have a rare mineral species first described from this locality in 2006. Guimaraesite is a newly described complex calcium/zinc/magnesium/iron beryllium phosphate, which comes from an unnamed pegmatite working in this valley. This specimen is a complete floater quartz cluster the size of a large grapefruit, with exception only of one small bit on one side which is contacted. The bottom has rich coating of Guimaraesite in sub-mm spherical crystal clusters.
8.1 x 6.3 x 4.7 cm. A classic Peruvian assemblage featuring large chalcopyrite crystals to 2.5 cm perched in a nest of fine quartz points. Ex. Charlie Key.
7.8 x 5.2 x 3.7 cm. A beautiful 3.5-cm-across botryoidal fluorite perched like a fried egg as we fondly call them on lustrous quartz crystals. Modern classics from India, these were more abundant a few years ago and not around as much now. Ex. Charlie Key.
2.4 x 2.1 x 1.7 cm. From a small, very strange pocket found in 2006, this is a fine cluster of quartz enclosing a green ball of botryoidal (acrystalline) fluorite in its midst. It is a thumbnail that at first guess looks much more like a prehnite than a fluorite. Ex. Charlie Key.
5.1 x 3.7 x 2.0 cm. A beautiful 2.1-cm botryoidal fluorite cluster perched like a fried egg as we fondly call them, on lustrous quartz crystals. Modern classics from India, these were more abundant a few years ago and not around as much now. This one has a yellow-green color to it. Ex. Charlie Key.
5.2 x 2.4 x 1.4 cm. Some agate varieties are prized by collectors, as are these Mexican agates. This is a fine specimen showing excellent color and banding.
11.2 x 5.6 x 5.0 cm. A unique and striking amethyst scepter specimen from the Sahatany Pegmatite Field of Madagascar. This fine cabinet piece has a fabulous, sceptered cluster of glassy amethyst crystals perched atop a sharp, frosty quartz crystal. The additional cluster of amethyst crystals draped on one side and the base is a gorgeous accent. This complete all-around beauty is essentially pristine. I have never seen anything like this from this locale. Ex. Don Olson Collection, who had found it with a lapidary dealer, sometime around 1998-2000.
3.0 x 1.6 x 1.2 cm. A superb, complete all-around and pristine, water-clear, smoky quartz crystal studded with lustrous anatase crystals to 9 mm from Hardangervidda, Norway. The anatase crystals are embedded both on and within the smoky quartz. Ex. Dr. Gary Hansen, Smithsonian, and University of Oslo Collections. Dr. Hansen obtained this piece in a small lot trade with the Smithsonian, who in turn traded with the Geology Museum at the University of Oslo.
4.4 x 2.7 x 2.0 cm. A superb, old-time combination piece of gemmy, golden-brown eosphorite blades totally covering one-half of a water-clear quartz crystal that has a partial overgrowth of frosted quartz. Essentially pristine. This fine and rare combination piece is from 1960s-70s finds at the renowned Lavra da Ilha pegmatite, located on a island in the Jequitinhonha River, Minas Gerais. The pegmatite could only be mined when water levels were low.
5.1 x 3.4 x 2.2 cm. A rare, aesthetic, spinel-twinned fluorite crystal on quartz from the Yaogangxian Mine of China. A 3.0 cm, gemmy and lustrous, pastel-green fluorite crystal is perched at an angle of a pedestal of parallel-growth quartz crystals. The intensely purple zoning in the spinel-twin fluorite is a vivid and beautiful accent. The quartz crystals have a secondary overgrowth of drusy quartz. This is a pristine, complete all-around rarity from this well-known locale.
11.0 x 9.4 x 3.0 cm. Gorgeous, gemmy, intensely purple, grape-like fluorite cuboctahedrons to 2.3 cm are richly and aesthetically scattered on the etched, cabinet quartz plate matrix on this specimen from recent finds at the Wushan Mine, De’an, China. The fluorite crystal faces appear to be step-faced, but in fact, are very lightly etched. A superb specimen for the size, given the isolation and quality of the grape-juice-colored crystals.
3.2 x 3.1 x 0.7 cm. This is a fine Mt. Malosa, Malawi combination miniature. A 3.3 cm, highly lustrous, black aegirine "needle" is beautifully attached to the sides of two, glassy, parallel-growth, smoky quartz crystals. The striking, pristine, 3.2 cm smoky quartz is doubly terminated and has gorgeous, darker terminations. The smaller smoky quartz has a broken termination.
9.9 x 7.8 x 4.1 cm. Three quartz crystals draped with a blanket of sparkly, light cream-colored calcite - with a second generation of calcite growth of an entirely different form, an extremely complex translucent compound crystal with pyramidal sub-terminations all over it. You can see a few chalcopyrite crystals as well. A beautiful classic piece from 20 years ago. Ex. Jaime Bird Collection.
4.8 x 2.1 x 1.8 cm. Attractively perched on the tip of a shard of colorless quartz is a burst of pastel-pink crystals of rose quartz. Great aesthetics. Ex. Jaime Bird Collection.
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Rob Lavinsky, rob@irocks.com
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Mineral Specimens by species; or
by specimen id.
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![Quartz (Var: Rutilated Quartz) from Novo Horizonte, Bahia, Northeast Region, Brazil [db_pics/mdpics/MD-215465a.jpg]](db_pics/mdpics/MD-215465a.jpg)
![Lepidolite, Guimarãesite, Quartz from Guimarãesite occurrence, Piauà valley, Taquaral, Itinga, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-215471a.jpg]](db_pics/mdpics/MD-215471a.jpg)
![Lepidolite, Guimarãesite, Quartz from Guimarãesite occurrence, Piauà valley, Taquaral, Itinga, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-215471b.jpg]](db_pics/mdpics/MD-215471b.jpg)
![Chalcopyrite, Quartz from Huaron Mining District, San Jose de Huayllay District, Cerro de Pasco, Daniel Alcides Carrión Province, Pasco Department, Peru [db_pics/mdpics/MD-215481a.jpg]](db_pics/mdpics/MD-215481a.jpg)
![Fluorite, Quartz from Mahodari, Nasik District, Maharashtra, India [db_pics/mdpics/MD-215523a.jpg]](db_pics/mdpics/MD-215523a.jpg)
![Fluorite, Quartz from Boldut Mine, Cavnic (Kapnic; Kapnik), Maramures Co., Romania [db_pics/mdpics/MD-215546a.jpg]](db_pics/mdpics/MD-215546a.jpg)
![Fluorite, Quartz from Mahodari, Nasik District, Maharashtra, India [db_pics/mdpics/MD-215547a.jpg]](db_pics/mdpics/MD-215547a.jpg)
![Chalcedony (Var: Agate) from Chihuahua, Mexico [db_pics/mdpics/MD-215972a.jpg]](db_pics/mdpics/MD-215972a.jpg)
![Quartz (Var: Amethyst), Quartz from Sahatany Pegmatite Field (Mt Bity (Ibity) area), Vakinankaratra Region, Antananarivo Province, Madagascar [db_pics/mdpics/MD-216052a.jpg]](db_pics/mdpics/MD-216052a.jpg)
![Anatase, Quartz (Var: Smoky Quartz) from Hardangervidda, Hordaland, Norway [db_pics/mdpics/MD-216057a.jpg]](db_pics/mdpics/MD-216057a.jpg)
![Eosphorite, Quartz from Ilha claim, Taquaral, Itinga, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-216058a.jpg]](db_pics/mdpics/MD-216058a.jpg)
![Eosphorite, Quartz from Ilha claim, Taquaral, Itinga, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-216058b.jpg]](db_pics/mdpics/MD-216058b.jpg)
![Fluorite, Quartz from Yaogangxian Mine, Yizhang Co., Chenzhou Prefecture, Hunan Province, China [db_pics/mdpics/MD-216399a.jpg]](db_pics/mdpics/MD-216399a.jpg)
![Fluorite, Quartz from Wushan Fluorite mine, De'an Co., Jiujiang Prefecture, Jiangxi Province, China [db_pics/mdpics/MD-216401a.jpg]](db_pics/mdpics/MD-216401a.jpg)
![Aegirine, Quartz (Var: Smoky Quartz) from Mt Malosa, Zomba District, Malawi [db_pics/mdpics/MD-216435a.jpg]](db_pics/mdpics/MD-216435a.jpg)
![Calcite, Quartz from Boldut Mine, Cavnic (Kapnic; Kapnik), Maramures Co., Romania [db_pics/mdpics/MD-216437a.jpg]](db_pics/mdpics/MD-216437a.jpg)
![Calcite, Quartz from Boldut Mine, Cavnic (Kapnic; Kapnik), Maramures Co., Romania [db_pics/mdpics/MD-216437b.jpg]](db_pics/mdpics/MD-216437b.jpg)
![Quartz (Var: Rose Quartz), Quartz from Taquaral, Itinga, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-216440a.jpg]](db_pics/mdpics/MD-216440a.jpg)