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Mineral Specimens with Quartz
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5.2 x 2.6 x 2.0 cm. A very interesting and pretty amethyst crystal from Brandberg, Namibia. The vivid purple color saturation is very unusually concentrated vertically and the internal, echelon, angled growth plates give a unique characterization to this fine and glassy piece. And the weird, skeletal hole in one termination face sets this piece off. The base of this crystal is broken and healed, so technically, this is a doubly terminated crystal. Ex. Charlie Key dealer stock.
10.0 x 7.5 x 6.2 cm. Gemmy and lustrous, color-zoned purple fluorite cubes to 6 mm are richly and aesthetically strewn on the top of a crudely blocky matrix of off-white to very pastel-pink microcline crystals from a new Colorado find. A real bonus is the 3.8 cm pair of pristine, doubly terminated smoky quartz crystals hidden on the bottom of this pristine, complete-all-around, floater specimen. This fine Colorado specimen is from the 2008 find in the Monster Pocket of the Dreamtime Mine in Teller County.
7.8 x 4.1 x 4.0 cm. Siglo Veinte Mine is one of the most impressive Bolivian localities. It is the type locality for many "best in the world" species, and it even produces some amazing specimens of common species like Quartz. The Japan-Law twin Quartz specimens are well known in the mineral world, and this piece is a great example of said material. The specimen hosts a beautiful, doubly-terminated, nearly water clear, colorless Japan-Law twin Quartz measuring 3.6 cm across along with several prismatic Quartz crystals which are accented by pale yellow color spherical aggregates of Wavellite up to 9 mm.
4.2 x 2.8 x 2.7 cm. The mine at Huanuni is one of the largest tin mines in Bolivia. This mine is better known for its phosphate species, but some of the more unique and attractive Cassiterite specimens are found there. A few sharp, lustrous, black/brown, prismatic "drill-bit"-habit crystal groups of Cassiterite sit atop frosted, white, prismatic "scepter" Quartz crystals. This "drill-bit"-habit is rarely seen in Cassiterite and the best Bolivian specimens of this habit are found at Huanuni. This piece came out of the ground about 25 years ago. Ex. Richard Kosnar Collection.
6.1 x 2.9 x 2.2 cm. This specimen is a great small cabinet size piece consisting of fine, sharp, gemmy, lustrous, prismatic, lavender "reverse" scepter and simple prisms of Amethyst measuring up to 2.0 cm sitting atop white/colorless, modified rhombohedra of Calcite on matrix. This piece is remarkable for Bolivia as it features a type of crystallization that is virtually unheard of for this country.
7.1 x 5.5 x 3.2 cm. This piece features several sharp, lustrous, metallic grey/silver color tetrahedral crystals of Tetrahedrite measuring up to 2.7 cm on edge. They are associated with some very gemmy, stubby, colorless Quartz prisms. There is one spot on this specimen where the Quartz crystals have formed a beautiful "flower"-like or "star-shaped burst" which is sitting atop complimenting Tetrahedrite crystals in a similar shape. Ex. Brian Kosnar Collection.
2.7 x 2.3 x 1.0 cm. Zanazziite is a Hydrated Calcium Magnesium Iron Aluminum Beryllium Phosphate. This piece hosts a well-formed, translucent, olive-green crystal group of the rare phosphate Zanazziite which is aesthetically sitting on a matrix of sharp, lustrous, translucent crystallized Rose Quartz. This specimen is over 30 years old and is from the original find from the 1970’s. Ex. Richard Kosnar Collection.
6.0 x 5.6 x 3.8 cm. Intense purple phantom. The crystal is 5.2 x 4 x 3 cm, and attached to a quartz crystal that is, itself, phantomed. The quartz tip is glassy and water-clear.
11.3 x 9.1 x 5.2 cm. This fluorite cluster is 6 cm across and looks like a floating city, impaling itself on the quartz. The freestanding fluorite is complete all around the top and sides, only contacted a little on the lower backside. It is translucent, and pristine on all the faces. The sharp steppes are highlighted by a thin, intense purple phantom at all edges. The fluorite is perched on the quartzes, which are also totally pristine and perfect. A sprinkling of sharp brown, translucent scheelite octahedra, mixed with small bladed white calcites, overlays the rear of the quartz terminations and the valleys between the quartz and the fluorite itself. Scheelite, of course, is quite rare for this mine. Found in 2006.
8.8 x 7.3 x 5.8 cm. This fluorite cluster is 5.8 cm across and looks like a floating city, perched atop the quartz. The freestanding fluorite is complete all around the top, sides, and the back, only contacted on a tiny portion of the bottom/rear of the specimen. It is translucent, and pristine on all the faces. The sharp steppes are highlighted by a thin, intense purple phantom at all edges. The fluorite "city" is standing upon a massive fluorite base which adheres to and extends between the two quartzes - which are also totally pristine and perfect. A sprinkling of sharp brown, translucent scheelite octahedra sparkles on the backside of the quartz. Scheelite, of course, is quite rare for this mine. Found in 2006.
11.4 x 8.3 x 8.1 cm. This fine piece features a pristine, 3.8-cm-across fluorite with intense green-purple zoning. No subtle phantom here. The crystal is one of the best and biggest of this style. It is pristine, complete, and totally translucent. The dolomite next to it is 6 cm. It is perched on both quartz and porcelain-like dolomite, making for a great contrast. This is from a new pocket found at the end of 2008. NOTE: these exhibit the photographic property of metamerism. They change colors from halogen and professional bulbs (more blue) to indoor fluorescent lighting and even natural sunlight (more green). Examples from both are shown here.
11.1 x 8.6 x 5.9 cm. This specimen features a single, jewel-like, purple-zoned, cuboctahedral fluorite (1.7 cm across) perched on a dramatic plate of dolomite. Except at the periphery, the dolomites are in good shape. Quartz association is a nice bonus. The dolomites have a porcelain-like look to them. Purple crystals in this pocket were few and far between, it seems. This is from a new pocket found at the end of 2008.
13.3 x 10.3 x 5.7 cm. This is a fine fluorite because of the complex form, and the subtle contrasts and symmetries of the stepped faces and oriented color layers on many edges. The large fluorite cluster, which is absolutely pristine, is perched atop a cluster of sparkling, clear quartzes. There are a few internal fractures, but the surface is unmarred and the interior is otherwise completely transparent.
3.6 x 3.2 x 2.4 cm. Gemmy, modified cuboctahedra with sharp purple phantoms in their cores, cling to a 3-dimensional quartz cluster. Its style is very unique for the locality.
4.4 x 2.5 x 2.0 cm. A sharp and flawless gem fluorite crystal measures 1.7 cm across, and is perched on this sharp, gemmy quartz point. The quartz is, literally, very sharp.
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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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share specimen![Quartz (Var: Amethyst) from Goboboseb Mountains, Brandberg area, Brandberg District, Erongo Region, Namibia [db_pics/mdpics/MD-235266a.jpg]](db_pics/mdpics/MD-235266a.jpg)
![Fluorite, Quartz (Var: Smoky Quartz), Microcline from Dreamtime Claim, Crystal Peak area, Teller Co., Colorado, USA [db_pics/mdpics/MD-235279a.jpg]](db_pics/mdpics/MD-235279a.jpg)
![Fluorite, Quartz (Var: Smoky Quartz), Microcline from Dreamtime Claim, Crystal Peak area, Teller Co., Colorado, USA [db_pics/mdpics/MD-235279b.jpg]](db_pics/mdpics/MD-235279b.jpg)
![Fluorite, Quartz (Var: Smoky Quartz), Microcline from Dreamtime Claim, Crystal Peak area, Teller Co., Colorado, USA [db_pics/mdpics/MD-235279c.jpg]](db_pics/mdpics/MD-235279c.jpg)
![Quartz, Wavellite from Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosà Department, Bolivia [db_pics/mdpics/MD-235290a.jpg]](db_pics/mdpics/MD-235290a.jpg)
![Quartz, Wavellite from Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosà Department, Bolivia [db_pics/mdpics/MD-235290b.jpg]](db_pics/mdpics/MD-235290b.jpg)
![Cassiterite, Quartz from Huanuni mine, Huanuni, Dalence Province, Oruro Department, Bolivia [db_pics/mdpics/MD-235293a.jpg]](db_pics/mdpics/MD-235293a.jpg)
![Quartz (Var: Amethyst) from Bombori, Chayanta Province, Potosà Department, Bolivia [db_pics/mdpics/MD-235297a.jpg]](db_pics/mdpics/MD-235297a.jpg)
![Tetrahedrite, Quartz from Casapalca Mine, Casapalca, Huarochiri Province, Lima Department, Peru [db_pics/mdpics/MD-235302a.jpg]](db_pics/mdpics/MD-235302a.jpg)
![Tetrahedrite, Quartz from Casapalca Mine, Casapalca, Huarochiri Province, Lima Department, Peru [db_pics/mdpics/MD-235302b.jpg]](db_pics/mdpics/MD-235302b.jpg)
![Tetrahedrite, Quartz from Casapalca Mine, Casapalca, Huarochiri Province, Lima Department, Peru [db_pics/mdpics/MD-235302c.jpg]](db_pics/mdpics/MD-235302c.jpg)
![Zanazziite, Quartz (Var: Rose Quartz) from Ilha claim, Taquaral, Itinga, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-235314a.jpg]](db_pics/mdpics/MD-235314a.jpg)
![Zanazziite, Quartz (Var: Rose Quartz) from Ilha claim, Taquaral, Itinga, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-235314b.jpg]](db_pics/mdpics/MD-235314b.jpg)
![Fluorite, Quartz from Yaogangxian Mine, Yizhang Co., Chenzhou Prefecture, Hunan Province, China [db_pics/mdpics/MD-235477a.jpg]](db_pics/mdpics/MD-235477a.jpg)
![Fluorite, Scheelite, Calcite, Quartz from Yaogangxian Mine, Yizhang Co., Chenzhou Prefecture, Hunan Province, China [db_pics/mdpics/MD-235484a.jpg]](db_pics/mdpics/MD-235484a.jpg)
![Fluorite, Scheelite, Quartz from Yaogangxian Mine, Yizhang Co., Chenzhou Prefecture, Hunan Province, China [db_pics/mdpics/MD-235486a.jpg]](db_pics/mdpics/MD-235486a.jpg)
![Fluorite, Dolomite, Quartz from Shangbao Pyrite mine, Leiyang Co., Hengyang Prefecture, Hunan Province, China [db_pics/mdpics/MD-235496a.jpg]](db_pics/mdpics/MD-235496a.jpg)
![Fluorite, Dolomite, Quartz from Shangbao Pyrite mine, Leiyang Co., Hengyang Prefecture, Hunan Province, China [db_pics/mdpics/MD-235496b.jpg]](db_pics/mdpics/MD-235496b.jpg)
![Fluorite, Dolomite, Quartz from Shangbao Pyrite mine, Leiyang Co., Hengyang Prefecture, Hunan Province, China [db_pics/mdpics/MD-235537a.jpg]](db_pics/mdpics/MD-235537a.jpg)
![Fluorite, Quartz from Yaogangxian Mine, Yizhang Co., Chenzhou Prefecture, Hunan Province, China [db_pics/mdpics/MD-235538a.jpg]](db_pics/mdpics/MD-235538a.jpg)
![Fluorite, Quartz from Yaogangxian Mine, Yizhang Co., Chenzhou Prefecture, Hunan Province, China [db_pics/mdpics/MD-235555a.jpg]](db_pics/mdpics/MD-235555a.jpg)
![Fluorite, Quartz from Yaogangxian Mine, Yizhang Co., Chenzhou Prefecture, Hunan Province, China [db_pics/mdpics/MD-235557a.jpg]](db_pics/mdpics/MD-235557a.jpg)