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5 x 4.5 x 2.2 cm. Shinkolobwe is the type locality for Becquerelite where it forms lathe-like, yellow to orange, flat-terminated crystals. Here the mineral is associated with Uranophane in very tiny needles. Sometimes the crystals cluster together like shown in the photo, and they reach on this specimen 5 mm. This is a good reference piece for a locality that is closed since more than 50 years.
5.9 x 3.9 x 2.5 cm. The mineral crystallizes here in bright yellow-orange transparent crystals of textbook shape, sub-mm but eye-visible, presented nicely on underlying tufts of acicular Uranophane. Named after a prominent Belgian, who at the time were the leaders in mineralogy of this region as they helped develop it, this is a very rare specimen of billietite because of the sheer richness of the piece. Usually we see this mineral as specks on other minerals, in a limited coverage. Here, many crystals of sharp billietite, sub-mm but eye-visible, sit perched on acicular Uranophane needles covering a large display face. From the prominent radioactive mineral collection of Alain Caubel, of France.
2.5 x 2.0 x 0.7 cm. Here we have a small specimen from the Shinkolobwe Mine which is richly covered with dark beige Rutherfordine crystal clusters in fan shaped form and yellow Uranophane. Crystallized Rutherfordine of this quality is known pretty much only from this mine. On both sides there are several well defined orange Billietite crystals up to 1.5 mm. Shinkolobwe is the Type Locality for Billietite, a mine that is closed now for decades.
10.0 x 8.5 x 5.0 cm. A large and colourful specimen with an unusual combination: bright yellow Uranophane crystals are filling a large vug of green Cuprosklodowskite crystals. Very interesting about this piece is that the Cuprosklodowskite crystals are partially imbedded in the Uranophane crystals and on some crystals, the green Cuprosklodowskite is passing through the terminations of the Uranophane crystals. Thus, this is not pseudomorphing, but growth together in the same pocket. At a close look, one can observe that many of the Cuprosklodowskite crystals are terminated, which is not often seen. This piece was recovered during the removal of the U-dump in the early 1990’s. Musonoi has ceased producing minerals since then.
2.6 x 2.2 x 1.0 cm. A small but extremely rich specimen of Uraninite covered with powdery, microcrystalline yellow Uranophane. On the Uranophane one can see a few straw yellow Studtite crystal clusters up to 4 mm in size. Shinkolobwe is the Type Locality for Studtite, a mine closed since decades.
2.8 x 2.2 x 2.5 cm. Although this is a small specimen of Uraninite it is well covered with Studtite sprays up to 3 mm on a bed of Uranophane with orange Fourmarierite. The contrast is amazing and helps to make this a significant, photogenic, Studtite specimen. Fourmarierite is best known as red pseudo-hexagonal crystals but also as orange needles or "grains". On this specimen it is seen as this orange form which is much rarer but mostly overseen or taken for Curite and thus mislabeled if ever it was found in some collections. Shinkolobwe is the Type Locality for the Studtite and the Fourmarierite, a mine closed since decades.
5.6 x 3.3 x 3.2 cm. Sharp crystals of intense yellow uranophane, to 4mm, make this protected vug a significant specimen for the species for Namibia. Rossing produces lots of boltwoodite as a radioactive, but few uranophanes. Ex. Charlie Key.
9.1 x 8.0 x 4.5 cm. Uranophane is a hydrated uranium silicate. This rich and fine specimen features lustrous, canary-yellow crystals in a striking, flattened, acicular, radiating crystal aggregate with needles up to 2.3 cm long and as jackstraw nests of smaller crystals on matrix, which includes calcite. This is old, seldom available material from the Don Boydston Collection, a noted California collector. The accompanying Filer’s label dates from 1949-1956, during the height of the uranium boom in the Southwest.
8.3 x 6.8 x 5.8 cm. A hair-like cluster of acicular uranophane crystals perched nicely in the middle of a matrix plate. This is classic, now rare, material from this old uranium mine in Bancroft area. Ex. John White Collection.
6.1 x 5.4 x 2.6 cm. A rare example of beautifully crystallized, acicular uranophane from New Mexico. At first glance, this looks like the Canadian material. However, it is from a small and hard to get locality. Ex. John White Collection.
7.7 x 5.8 x 5.3 cm. Two hair-like clusters of acicular uranophane crystals, perched nicely on a matrix plate. This is classic, now rare, material from this old uranium mine in Bancroft area. From the 405 drift, 600 level. Ex. John White Collection.
A GORGEOUS specimen with large acicular crystals for the species, arranged in radial tufts protected within a vuggy matrix. 6.7 x 4.8 x 2.7 cm
This remarkable specimen clearly shows embedded crystals of green Cuprosklodowskite altering to Uranophane , yellow and altered by the time it reaches the protected shallow cavity in the center of the piece. Most unusual! 5.9 x 3.1 x 2.3 cm
ex. Martin Zinn
Sharp, extremely gemmy crystals of this rare uranium species to 3 mm on contrasting quartz matrix. Just a beautiful piece, and extremely fine of the crystallography here . The species normally occurs as acicular needles, not as 3-D crystals with real terminations!
The mineral crystallizes here in bright yellow-orange transparent crystals of textbook shape, sub-mm but eye-visible, presented nicely on underlaying tufs of acicular Uranophane. Named after a prominent Belgian, who at the time were the leaders in mineralogy of this region as they helped develop it, this is a very rare specimen of billietite because of the sheer richness of the piece. Usually we see this mineral as specks on other minerals, in a limited coverage. Here, many crystals of sharp billietite, sub-mm but eye-visible, sit perched on acicular Uranophane needles covering a large display face! From the prominent radioactives collection of Alain Caubel, of France.
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