|
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
|
MD-117624 - Boltwoodite - - Archived Rössing Mine, Arandis, Swakopmund District, Erongo Region, Namibia miniature, 3.5 x 1.9 x 1.6 cm.
3.5 x 1.9 x 1.6 cm. Outstanding cluster of Boltwoodite on matrix. The deep burnt-orange color is excellent, and the luster is good. Such deep color and completeness to the .9 cm "ball" of crystals is almost unheard of from the Rossing Mine, let alone any other location.
MD-167927 - Boltwoodite, Calcite - - Archived Rössing Mine, Arandis, Swakopmund District, Erongo Region, Namibia small cabinet, 9.3 x 7.0 x 3.5 cm.
9.3 x 7.0 x 3.5 cm. Boltwoodite is a RARE potassium uranyl silicate. This VERY SHOWY specimen features a horizontal band of radial clusters of super-bright, lemon-yellow boltwoodite needles proudly marching across a large vug covered with smoky-brown calcite scalenohedrons. Ex. Rob Smith Collection.
MD-177429 - Boltwoodite, Calcite - - Archived Rössing Mine, Arandis, Swakopmund District, Erongo Region, Namibia small cabinet, 7.1 x 5.0 x 2.2 cm.
7.1 x 5.0 x 2.2 cm. Freestanding, 3-dimensional sprays of fine boltwoodite xls to 8mm make this a superb species specimen, but also overall its quite unusually aesthetic.
MD-19016 - Boltwoodite - - Archived Rössing Mine, Arandis, Swakopmund District, Erongo Region, Namibia thumbnail, 2.2 cm
A striking CABINET-SIZED specimen with two sprays of lustrous and bright golden-yellow boltwoodite laths to 2.2 cm from the Swakopmund District of Namibia. Boltwoodite is a rare hydrated potassium uranium silicate. These are very large crystals for the species and this is older material, as the accompanying label says S.W. Africa, not Namibia. 11.3 x 6.4 x 5.6 cm
MD-199616 - Boltwoodite, Calcite - - Archived Rössing Mine, Arandis, Swakopmund District, Erongo Region, Namibia small cabinet, 9.2 x 7.1 x 5.7 cm.
9.2 x 7.1 x 5.7 cm. Boltwoodite is a rare potassium sodium uranyl silicate. This fine specimen features a well-placed, 3.8 cm vug highlighted with radial clusters of super-bright, lemon-yellow boltwoodite needles. The vug is lined with smoky-brown calcite scalenohedrons and the boltwoodite clusters surround a 1.7 cm, lustrous, colorless calcite scalenohedron. Ex. Rob Smith Collection.
MD-201151 - Boltwoodite - - Archived Rössing Mine, Arandis, Swakopmund District, Erongo Region, Namibia small cabinet, 8.8 x 6.9 x 5.2 cm.
8.8 x 6.9 x 5.2 cm. A large boltwoodite specimen with fine crystals with excellent color and color contrast to the dark calcite beneath. The largest cluster here is 1 cm across.
MD-216029 - Boltwoodite - - Archived Rössing Mine, Arandis, Swakopmund District, Erongo Region, Namibia miniature, 4.1 x 3.0 x 2.8 cm.
4.1 x 3.0 x 2.8 cm. Boltwoodite is a rare potassium, sodium, uranium silicate. This superb and rich miniature specimen features a well-placed, 3.4 cm vug filled with radial clusters of bright, golden-yellow boltwoodite needles in a calcite-rich matrix. Ex. Mullane Collection, so this would be an old specimen from finds here in the late 1960s and early 1970s.
MD-240592 - Boltwoodite - - Archived Rössing Mine, Arandis, Swakopmund District, Erongo Region, Namibia thumbnail, 2.5 x 1.7 x 1.1 cm.
2.5 x 1.7 x 1.1 cm. A superb pair of radial Boltwoodite clusters on matrix. The larger of these lustrous, bright-orange clusters is 1.2 cm across with a few gemmy individual crystals reaching .1-.2 cm in length. The first great discovery of Boltwoodite from Rossing came in the late 1970's. Ex. Charlie Key Collection.
MD-34735 - Boltwoodite - - Archived Goanikontes Claim, Arandis, Swakopmund District, Erongo Region, Namibia small cabinet, 5.2 x 3 x 2cm
The orange to yellow boltwoodite is contrasted on the best possible matrix from this locality, a contrasting black quilt of dark calcite. 5.2 x 3 x 2cm
MD-39013 - Boltwoodite - - Archived Rössing Mine, Arandis, Swakopmund District, Erongo Region, Namibia miniature, 4.5 x 4 x 3.8 cm
Boltwoodite is common enough in "reference specimens" but THIS is absolutely incredible and stands FAR above the average. Truly, its outsanding. 4.5 x 4 x 3.8 cm
MD-69287 - Boltwoodite - - Archived Rössing Mine, Arandis, Swakopmund District, Erongo Region, Namibia thumbnail, 1.1 x 1.0 x 0.9 cm.
1.1 x 1.0 x 0.9 cm. A small but incredibly dense aggregate of intense yellow boltwoodite crystals, from a very old find at this classic locale for the species.
MD-69288 - Boltwoodite - - Archived Rössing Mine, Arandis, Swakopmund District, Erongo Region, Namibia thumbnail, 1.8 x 1.7 x 1.4 cm.
1.8 x 1.7 x 1.4 cm. A lovely thumbnail consisting of very fine acicular crystals of umber-yellow boltwoodite. The needles exhibit both a radial growth and a vertical cluster habit not unlike what you see in some palms, and are superb in both color and habit. Tim Blackwood Collection.
MUN08RAD-01 - Boltwoodite - $ 1450 SOLD Rossing Mine, Arandis, Swakopmund District, Erongo Region, Namibia small cabinet, 8.8 x 6.9 x 5.2 cm
I have seen a large number of boltwoodite specimens over the years, but seldom have i seen a piece with all the attributes of this one: excellent coverage in a large specimen; color and color contrast to the dark calcite beneath; and overall quality to the crystals. Seldom do you get all this in a nice, rich, display-worthy specimen. Boltwoodite is both rare and beautiful, and the pieces from this locality are the best from the collector's point of view in my opinion. This piece, for the size and overall display, is one of the very best I have seen for sale in years. The largest cluster here is 1 cm across ! (mid-left, protected in pocket depths)
RARE08-2-02 - Boltwoodite on Calcite - $ 750 SOLD Rossing Uranium Mine, Arandis District, Erongo Region, Namibia small cabinet, 7.1 x 5.0 x 2.2 cm
Freestanding, 3-dimensional sprays of fine boltwoodite xls to 8mm make this a superb species specimen, but also overall its quite unusually aesthetic. Rare in this quality, boltwoodite comes at its best from this uranium mine.
RARE08-2-44 - Boltwoodite - $ 200 SOLD Rossing Uranium Mine, Arandis District, Erongo Region, Namibia thumbnail, 1.1 x 1.0 x 0.9 cm
A small but incredibly dense aggregate of intense yellow boltwoodite crystals, from a very old find at this classic locale for the species. Interestingly, the specimen is SO dense and unusual for a boltwoodite, that at the time it was mislabelled as tsumcorite when sold with other African minerals, and ended up in a US collection labelled as tsumcorite (from Tsumeb). All Content and Design ©1996-2010 The ArkenstonePowered by http://mineralwebsites.comBy-species Galleries | ||||||||||||||||||||||||||||||||||
