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Crystal Classics - Weekly Update

14th September 2018

This weeks update features a vibrant selection of specimens from the famous Tsumeb Mine:

- Very fine acicular, hair-like crystals of the very rare molybdate Biehlite radiate out as individual silky needles to about 1cm and also form compacted tangled mats which act as the matrix

- Beautiful microcrystalline Duftite forms a layered, crab-like shell in shades of earthy lime-green to dark leaf-green. This highly unusual cast has formed in curved, curtain-like stacked shells of Duftite with no attached matrix. Superb!

- Bright blue crystalline Linarite dominates the display surface of a brecciated, pale greenish-yellow matrix. Surrounding this are other areas of Linarite, granular blue-green Caledonite, green Malachite and colourless to light grey granular Cerussite

- Shell-like casts of creamy Dolomite are draped over bundles of pale creamy-yellow Aragonite crystals of the lead-rich variety, Tarnowitzite. A very aesthetic specimen which clearly shows the paragenesis between the crystalline Aragonite core and the overlying Dolomite casts

- A very rare and choice specimen of the zinc arsenate hydroxide Paradamite, as terminated lustrous acid-lemon-yellow crystals on a dark fragment of Dolomitic matrix. The specimen is accompanied with a label noting analysis by Raman spectroscopy

- A curious, little finger-sized (and shaped) stalactite of highly lustrous pale lilac Dolomite speckled with dark-green spheres of Mottramite to almost 1mm diameter. The glassy Dolomite crystals form an outer skin to the Calcite core of this most attractive and unusual specimen

With many more specimens to see, visit the website for the full update.


Duftite

Paradamite

Mottramite

Linarite

Biehlite

Aragonite
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