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Superb, rare combination specimen of mimetite, azurite and wulfenite. The mimetite measures to 1.9 cm. From my personal collection. 9.4 x 4.5 x 2.5 cm.
From the type locality, this is an extremely rare gem floater crystal of axinite-(Mg) (magnesioaxinite). The crystal is color-zoned from clear to pale salmon, has a superb vitreous luster, and has a sharp form. It fluoresces red to violet under LW UV. Figured in the Merelani issue of the Mineralogical Record. 3.3 x 2.2 x 0.5 cm.
Large, beautiful pseudomorph of malachite after azurite from Onganja. The malachite is well crystallized in velvety sprays, as can be seen in the close-up. The large crystal at the top is 6.0 cm long. 6.9 x 6.9 x 5.6 cm.
Superb, brightly colored specimen from the best locality (in my opinion) for cobaltoan calcite. The dark heterogenite and white calcite provide an excellent color contrast. 5.1 x 4.4 x 2.8 cm.
Nice 1.2 cm, complex, lustrous crystal of this rare sulfide mineral. The additional smaller crystals are mostly quite nice as well, although there is some scattered contacts and minor damage as shown in the photos. 7.7 x 6.7 x 5.0 cm.
Red, lustrous, translucent doubly-terminated cuprite crystals to 1.1 cm are on blue-green chrysocolla. Most crystals, including the largest, are in excellent shape. The Dikuluwe Mine is west of the better known Mashamba West Mine and specimens from here are less common. 8.4 x 8.0 x 3.6 cm.
The light blue chrysocolla of this specimen provides an excellent contrast to highly lustrous, red cuprite crystals which measure to 1.2 cm. There is also some bright green sprays of primary malachite present; the sprays measure to about 6 mm. I believe the brown crystals present are baryte. 4.5 x 3.3 x 2.9 cm.
Translucent, lemon-yellow crystals of londonite-rhodizite to 1.3 cm on matrix with crude red tourmaline crystals. The londonite-rhodizite fluoresces yellow under LW UV. A nice example of this rare borate. 5.5 x 4.8 x 4.1 cm.
Heavy specimen of greyish-brown, translucent cerussite from Tsumeb. The long crystals appear to all be doubly-terminated and have a sixling-twin structure when viewed from the ends. Contacted on the reverse and on the edges of some crystals. 6.4 x 6.3 x 3.8 cm.
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