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Mineral Specimens with Ferrocolumbite
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page 1 / 2 - 25 specimens selected - next
ex. Richard and Mary Nelson
This amazing competition quality thumbnail has a splendent, black, 1.5 cm in length, columbite crystal perched on a crystal of blue-green, microcline var. amazonite, measuring 1.0 cm in length. I’m sure I have never seen another like it. Unique thumbnail!
1.7 x 1.2 x 1.0 cm. A pristine, complete all-around, very sharp and lustrous, blocky, black columbite crystal from Hewitt Mine, Haddam, Connecticut. Columbite is RARE from this locality, which is nicely accented by a bit of quartz hidden in the notch. This is CLASSIC, OLD-TIME Haddam material. Ex. Jarnot Collection, Connecticut specialists.
5.5 x 4.9 x 3.9 cm. A large, complete all-around cluster of two, lustrous, blocky, black, parallel-growth ferrocolumbite crystals from an unknown locality in Minas Gerais, Brazil. Ex. Charles Hansen Collection.
2.1 x 1.5 x 1.2 cm. Lustrous, sharp and sharply terminated, dark brownish-gray columbite crystals form an excellent and showy thumbnail cluster from the famous Iveland pegmatites of Norway. Ex. Dick Jones Collection.
A magnificent crystal for the species from ANY location! This hoppered or stepped crystal is just exquisite as the pics indicate. It seems to be composed of two generations of growth. It was obtained by Chris from the personal collection of mine owner Roland Reed earlier this year. I never imagined such a thing existed from the County. 4.5 x 3.5 x 1.8 cm
4.8 x 3.8 x 2.6 cm. This is an extremely rare specimen, the best Chuck knows of, from one of the more interesting mines in San Diego County. It features a very equant, sharp, and surprisingly attractive crystal of the rare species Manganocolumbite perched aesthetically on matrix. Ex. Chuck Houser Collection.
2.2 x 1.1 x 1.0 cm. This superb thumbnail has a splendent, black, 1.5 cm columbite crystal perched on a crystal of blue-green microcline var. amazonite, measuring 1.0 cm in length. Ex. Richard and Mary Nelson Collection.
2.5 x 1.9 x 1.6 cm. A very fine intergrown cluster of jet-black crystals, with the largest being a full 2.5 cm and doubly terminated. The luster ranges from very good along the prism faces to average on the terminations. Ex. Wendell E. Wilson Collection.
3.4 x 1.4 x 1.2 cm. Samarskite is an uncommon rare-earth oxide found in pegmatites. This is an excellent and very fine combination specimen from the much less well-known Divino de Uba pegmatite of Brazil. A sharp tan, orthorhombic, parallel-growth samarskite crystal hosts parallel slivers of lustrous, metallic columbite crystals. The samarskite crystal is pristine. Ex, Don Boydston Collection and accompanied by a 1950s-1960s-era Burminco label. A rare and seldom available combination piece from this less common locale.
9.4 x 7.0 x 5.0 cm. A large, 5.4 x 4.2 cm, lustrous, platy, battleship-gray columbite crystal is embedded in albite and smoky quartz matrix on this fine and classic, old-time specimen from the pegmatites at Newry, Maine. This is a very large crystal for the species from this historic locale. Excellent combination material. Ex. Mullane Collection and accompanied by an older, faded paper label.
VERY sharp crystals of columbite-(Fe). The sharp crystals have a tapered habit. 6.3 x 3.4 x 2.8 cm
6.0 x 2.5 x 2.1 cm. This is a large, heavy, long prismatic, lustrous but opaque crystal cluster, combining two elements much in demand for making vital, metallic alloys. The color is blackish-brown, and the specimen is in very good shape, quite aesthetic overall. Ex. Richard Hauck Collection.
Fine rhodizite specimens with rich color, excellent lustre, and sharpness of the crystal (which is 1.3 cm in height). 3.7 x 3.5 x 2.5 cm
4.9 x 3.8 x 1.8 cm. One of the things that has made the Hauck collection so interesting is all the old classic minerals from sites long ago lost or closed. Another in this series is this historic crystal from the old mining district near Epping. This single, well-terminated crystal has great form. There are also a couple of contacts which have interesting growth lines on the front and side of the crystal. Ex. Richard Hauck Collection.
This single tabular crystal shows the desirable form and luster hoped for from one of the classic localities in the Eastern US. A very fine locality specimen! 1.9 x 1.2 x .8 cm
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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![Columbite on Microcline var. Amazonite from Crystal Park, El Paso County, Colorado, USA [db_pics/pics/d06-205a.jpg]](db_pics/pics/d06-205a.jpg)
![Columbite from Hewitt Gem Quarry (Herb's Gem Quarry; Sawmill Quarry), Long Hill, Haddam, Middlesex Co., Connecticut, USA [db_pics/mdpics/MD-162793a.jpg]](db_pics/mdpics/MD-162793a.jpg)
![Columbite-(Fe) from Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-182970a.jpg]](db_pics/mdpics/MD-182970a.jpg)
![Columbite from Iveland, Aust-Agder, Norway [db_pics/mdpics/MD-186423a.jpg]](db_pics/mdpics/MD-186423a.jpg)
![Columbite-(Mn) from Elizabeth R. Mine, Chief Mountain, Pala District, San Diego Co., California, USA [db_pics/mdpics/MD-20396a.jpg]](db_pics/mdpics/MD-20396a.jpg)
![Columbite-(Mn), Albite (Var: Cleavelandite), Muscovite from Elizabeth R. Mine, Chief Mountain, Pala District, San Diego Co., California, USA [db_pics/mdpics/MD-256770a.jpg]](db_pics/mdpics/MD-256770a.jpg)
![Columbite-(Fe), Microcline (Var: Amazonite) from Crystal Park, El Paso Co., Colorado, USA [db_pics/mdpics/MD-262113a.jpg]](db_pics/mdpics/MD-262113a.jpg)
![Columbite-(Fe) from Ipê mine, Governador Valadares, Doce valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-262508a.jpg]](db_pics/mdpics/MD-262508a.jpg)
![Samarskite-(Y), Columbite from Divinésia (ex-Divino de Ubá), Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-266268a.jpg]](db_pics/mdpics/MD-266268a.jpg)
![Columbite from Newry, Oxford Co., Maine, USA [db_pics/mdpics/MD-270208a.jpg]](db_pics/mdpics/MD-270208a.jpg)
![Columbite from Newry, Oxford Co., Maine, USA [db_pics/mdpics/MD-270208b.jpg]](db_pics/mdpics/MD-270208b.jpg)
![Columbite-(Fe) from Tsaramanga (Tongafeni; Itongafeno) pegmatite, Mahaiza Commune, Betafo District, Vakinankaratra Region, Antananarivo Province, Madagascar [db_pics/mdpics/MD-27449a.jpg]](db_pics/mdpics/MD-27449a.jpg)
![Columbite-Tantalite from Betafo District, Vakinankaratra Region, Antananarivo Province, Madagascar [db_pics/mdpics/MD-275156a.jpg]](db_pics/mdpics/MD-275156a.jpg)
![Rhodizite, Columbite-(Mn) from Antandrokomby pegmatite; Manandona Valley; Sahatany Pegmatite Field (Mt Bity (Ibity) area), Vakinankaratra Region, Antananarivo Province, Madagascar [db_pics/mdpics/MD-27527a.jpg]](db_pics/mdpics/MD-27527a.jpg)
![Columbite from Epping, Rockingham Co., New Hampshire, USA [db_pics/mdpics/MD-276293a.jpg]](db_pics/mdpics/MD-276293a.jpg)
![Columbite from Middlesex Co., Connecticut, USA [db_pics/mdpics/MD-37837a.jpg]](db_pics/mdpics/MD-37837a.jpg)