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Mineral Specimens with Goethite
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7.0 x 5.2 x 3.5 cm. This is a fine specimen from one of the most storied and well known districts in Colorado. The pegmatites near the Lake George area of Colorado have produced what most collectors and dealers consider to be the finest Amazonite specimens from the standpoint of superb color, top quality, wonderful display specimens and excellent associations. This particular specimen has no Amazonite, but it is a fine piece featuring sharp, lustrous, golden-black "blades" of Goethite forming a beautiful crystallized "spray" which are associated with minor "Onegite" (Amethyst with Goethite inclusions). The reverse side of the specimen shows an unusual, but very distinct "cast" after what is most likely Calcite. Ex. Brian Kosnar Collection.
10.0 x 5.4 x 4.9 cm. Supremely splendent, intergrown, smoke-gray goethite balls richly cover both sides of the cabinet gossan matrix and are nicely complimented by the lustrous, hematite-tinted calcite rhombs on this fine specimen from Bisbee. Ex. Dennis Mullane Collection.
6.0 x 4.8 x 4.0 cm. A sharp, highly lustrous, 1.6 cm, tabular, royal-blue, azurite crystal is attractively nestled in a vug adjacent to smaller azurite crystals (some pseudomorphing to malachite) and starkly contrasting, olive-brown goethite balls. The large azurite is doubly terminated. Unusual, highly representative, old-time combination material from the Dennis Mullane Bisbee Collection.
A sharp smoky point with CRYSTALLIZED goethite (not the ugly amorphous type) in spray-like blades. Fine Colorado combo mini. 4.7 x 3.7 x 3.3 cm
7.1 x 5.7 x 4.5 cm. This is a superb specimen from one of the most storied and well known districts in Colorado. The pegmatites near the Lake George area of Colorado have produced what most collectors and dealers consider to be the finest Amazonite specimens from the standpoint of superb color, top quality, wonderful display specimens and excellent associations. This particular specimen has no Amazonite, but it is a wonderful display piece featuring wonderful, sharp, lustrous, golden-black "blades" of Goethite forming a beautiful crystallized "spray" The reverse side of the specimen shows an unusual, but very distinct "cast" after what is most likely Quartz. Crystallized specimens like this are few and far between from Colorado. Ex. Brian Kosnar Collection.
5.0 x 5.0 x 2.6 cm. A superb specimen from one of the most storied and well known districts in Colorado. The pegmatites near the Lake George area of Colorado have produced what most collectors and dealers consider to be the finest Amazonite specimens from the standpoint of superb color, top quality, wonderful display specimens and excellent associations. This particular specimen has no Amazonite, but it is a fine piece featuring wonderful, sharp, lustrous, golden-black "blades" of Goethite forming a beautiful crystallized "spray". Crystallized specimens like this are few and far between from Colorado. Ex. Brian Kosnar Collection.
4.4 x 2.8 x 2.8 cm. Splendent, intergrown, smoke-gray goethite balls richly and very aesthetically cover the gossan matrix on this fine specimen from Bisbee. The goethite "mountain" is striking. Goethite specimens of this quality are very uncommon from Bisbee. Ex. Dennis Mullane Collection and probably dates to the 1950 or 1960s.
8.8 x 5.7 x 3.8 cm. From an incredible recent find, this amazingly iridescent and colorful goethite, which formed stalactitically, has botryoidal form on the surface which reflects its pink, red, gold, orange and other colors in every direction. Even the black goethite botryoids are silvery bright. An uncommonly colorful and beautiful form of a common mineral. This piece is complete-all-around and has stunning architecture.
9.5 x 6.5 x 4.5 cm. A very visual and uncommon baryte specimen from recent finds at Cerro Warihuyn, Peru. Most baryte specimens from this locale are amber or colorless. The parallel-growth blades on this striking piece are pearlescent white and preferentially sprinkled with contrasting, complimentary rosettes of goethite needles. The composite blades reach 8.0 cm and are artistically set on the elongate matrix of dolomite. Outstanding and aesthetic material. This is unusual amidst many styles from the locale.
11.5 x 7.0 x 4.3 cm. Firstly, I have no clue what this wormlike mass of tunnels and curves could have been before replaced, but we think it to be a goethite or limonite replacement pseudomorph now. What it was originally is anybody’s guess. The piece is solid, all-around, made up of these hollow tubes and curving growths. It looks like 20 shoelaces dipped in glue and hematite powder, twisted in loops, and left to dry in the sun. An interesting, and apparently older specimen from the Erongo Region, and from the noted Erongo specialty collection of Heini Soltau.
Rare locality piece and rare pseudo from County! Ex Roland Reed 2 x 1.8 x 1.6 cm
4.4 x 3.0 x 2.1 cm. Raspite is an ultra-rare lead tungstate. Broken Hill is the Type Locality and raspite is a Holy Grail rare species for this famous locale. This showy and rich piece features a multitude of bright, glassy, orange microcrystals to 2 mm scattered on the mounded matrix.
Yet another legrandite, this time a unique radial spray! I tell everybody that there are some species where i just buy every specimen i can find (legrandite, phosphos, nambulite etc etc)...they only get more rare with time and every collector needs them if they want a systematic or important scientific collection. This piece is a thin plate with radial crystals shooting out like a sunburst every which way around. It is quite attractive and gives you a lot of legrandite for the price . 4.5 x 3.7 x 1.6 cm
This most interesting pseudomorph is fascinating on both sides. On the back side, limonite/goethite has totally replaced a carbonate mineral, most likely siderite but possibly dolomite or calcite I suppose. On the front or display side, rutile crystals, some in a reticulated twinning pattern, totally cover the specimen by the dozens. The rutile is easy to spot since it exhibits a bright metallic luster and flashes of brilliant red! 11.1 x 10.8 x 4 cm
Super-lustrous, gemmy, modified rhombs of rhodochrosite, with clusters of manganite interspersed. The thick crystals measure to over one centimeter. This is a showy miniature! 5.2 x 3.7 x 3.5 cm
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Rob Lavinsky, rob@irocks.com
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share specimen![Goethite, Onegite from Dreamtime Claim, Crystal Peak area, Teller Co., Colorado, USA [db_pics/mdpics/MD-263194a.jpg]](db_pics/mdpics/MD-263194a.jpg)
![Goethite, Onegite from Dreamtime Claim, Crystal Peak area, Teller Co., Colorado, USA [db_pics/mdpics/MD-263194b.jpg]](db_pics/mdpics/MD-263194b.jpg)
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![Quartz (Var: Smoky Quartz), Goethite from Park Co., Colorado, USA [db_pics/mdpics/MD-27186a.jpg]](db_pics/mdpics/MD-27186a.jpg)
![Goethite from Clarence Coil claim, Lake George, Park Co., Colorado, USA [db_pics/mdpics/MD-273371a.jpg]](db_pics/mdpics/MD-273371a.jpg)
![Goethite from Clarence Coil claim, Lake George, Park Co., Colorado, USA [db_pics/mdpics/MD-273371b.jpg]](db_pics/mdpics/MD-273371b.jpg)
![Goethite from Clarence Coil claim, Lake George, Park Co., Colorado, USA [db_pics/mdpics/MD-280317a.jpg]](db_pics/mdpics/MD-280317a.jpg)
![Goethite from Clarence Coil claim, Lake George, Park Co., Colorado, USA [db_pics/mdpics/MD-280317b.jpg]](db_pics/mdpics/MD-280317b.jpg)
![Goethite from Bisbee, Warren District, Mule Mts, Cochise Co., Arizona, USA [db_pics/mdpics/MD-280497a.jpg]](db_pics/mdpics/MD-280497a.jpg)
![Goethite from Filón Sur Mine, Tharsis, Alosno, Huelva, Andalusia, Spain [db_pics/mdpics/MD-282332a.jpg]](db_pics/mdpics/MD-282332a.jpg)
![Baryte, Goethite from Cerro Warihuyn (Huarihuyn), Miraflores, Huamalíes Province, Huánuco Department, Peru [db_pics/mdpics/MD-283431a.jpg]](db_pics/mdpics/MD-283431a.jpg)
![Goethite from Erongo Region, Namibia [db_pics/mdpics/MD-284730a.jpg]](db_pics/mdpics/MD-284730a.jpg)
![Goethite from Elizabeth R. Mine, Chief Mountain, Pala District, San Diego Co., California, USA [db_pics/mdpics/MD-29640a.jpg]](db_pics/mdpics/MD-29640a.jpg)
![Raspite, Limonite from Broken Hill Proprietary Mine (Proprietary Mine; BHP Mine), Broken Hill, Yancowinna Co., New South Wales, Australia [db_pics/mdpics/MD-34317a.jpg]](db_pics/mdpics/MD-34317a.jpg)
![Raspite, Limonite from Broken Hill Proprietary Mine (Proprietary Mine; BHP Mine), Broken Hill, Yancowinna Co., New South Wales, Australia [db_pics/mdpics/MD-34317b.jpg]](db_pics/mdpics/m/MD-34317b.jpg)
![Legrandite, Limonite from Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico [db_pics/mdpics/MD-34325a.jpg]](db_pics/mdpics/MD-34325a.jpg)
![Rutile, Limonite from Cleveland Co., North Carolina, USA [db_pics/mdpics/MD-36994a.jpg]](db_pics/mdpics/MD-36994a.jpg)
![Rhodochrosite, Goethite from Uchucchacua Mine, Oyon Province, Lima Department, Peru [db_pics/mdpics/MD-37747a.jpg]](db_pics/mdpics/MD-37747a.jpg)