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These prominent smoke-grey bipyramids are crystals of stolzite, originating from Broken Hill, far-western NSW. The largest crystal is only 3mm long on its longest edge. Stolzite is a lead tungsten mineral (PbWO4), while pyromorphite is a complex species of lead chlorophosphate. Broken Hill has produced some of the finest specimens of stolzite known. DPI Economic Rock & Mineral Collection specimen No. 5153. Photographer - David Barnes. http://www.trade.nsw.gov.au/legal/copyright

These prominent smoke-grey bipyramids are crystals of stolzite, originating from Broken Hill, far-western NSW. The largest crystal is only 3mm long on its longest edge. Stolzite is a lead tungsten mineral (PbWO4), while pyromorphite is a complex species of lead chlorophosphate. Broken Hill has produced some of the finest specimens of stolzite known. DPI Economic Rock & Mineral Collection specimen No. 5153. Photographer - David Barnes. http://www.trade.nsw.gov.au/legal/copyright

tumblr_l4t3f2bmy01qzqiqko1_400.jpg 375×500 pixels

WEAR YOUR INK. Crystallised.

Aragonite Pantoja. Toledo. Spain. Ball 2,5cm Aragonite acicular. This is a very old picture but this aragonite is almost perfect.

Aragonite Pantoja. Toledo. Spain. Ball 2,5cm Aragonite acicular. This is a very old picture but this aragonite is almost perfect.

Investment Opal 18 x 16 x 7mm 13 carats Auction #421799 Opal Auctions

Lightning ridge solid black opal gem

Investment Opal 18 x 16 x 7mm 13 carats Auction #421799 Opal Auctions

Iris Agate | ©Chip Clark/Mineral Gallery, Smithsonian Institution Bozeman, Montana, US.

Iris Agate | ©Chip Clark/Mineral Gallery, Smithsonian Institution Bozeman, Montana, US.

We looked at Cerussite recently and this is another, differently shaped, example of it. This spectacular 'arrowhead' twin cerussite crystal is 7cm high. Cerussite is a species of lead carbonate ore and is one of the most common secondary minerals from Broken Hill. The sparkles are minute anglesite crystals, which is a form of lead sulphate. Specimen from Block 11, Proprietary Mine, Broken Hill. Economic Mineral Collection specimen No.7585. http://www.trade.nsw.gov.au/legal/copyright

We looked at Cerussite recently and this is another, differently shaped, example of it. This spectacular 'arrowhead' twin cerussite crystal is 7cm high. Cerussite is a species of lead carbonate ore and is one of the most common secondary minerals from Broken Hill. The sparkles are minute anglesite crystals, which is a form of lead sulphate. Specimen from Block 11, Proprietary Mine, Broken Hill. Economic Mineral Collection specimen No.7585. http://www.trade.nsw.gov.au/legal/copyright

Cuprite, Cu2O, Gwennap, Cornwall, England. Deep red cubo-octahedral crystals of Cuprite to 2mm

Cuprite, Cu2O, Gwennap, Cornwall, England. Deep red cubo-octahedral crystals of Cuprite to 2mm

The large black crystals in this image are sphalerite, with the largest crystal being 3cm across. Sphalerite is chemically composed of zinc iron sulphide. Accessory minerals are chlorite & bustamite. This particular specimen is from the NBHC Mine, Broken Hill.

The large black crystals in this image are sphalerite, with the largest crystal being 3cm across. Sphalerite is chemically composed of zinc iron sulphide. Accessory minerals are chlorite & bustamite. This particular specimen is from the NBHC Mine, Broken Hill.

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