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rockon-ro:PETRIFIED WOOD from the Chinle Formation of Arizona....
rockon-ro:KYANITE (Aluminum Silicate) crystals with milky...
rockon-ro:SCOLECITE (Hydrated Calcium Aluminum Silicate)...
rockon-ro:PURPURITE (Manganese Phosphate) from the Ross...
rockon-ro:QUARTZ (Silicon Dioxide) crystal cluster from...
rockon-ro:BLUE ANDEAN OPAL from Peru.
rockon-ro:BLUE HALITE from the Devonian Prairie Evaporite...
rockon-ro:CELESTITE (Strontium Sulfate) from Bombetoka Bay,...
rockon-ro:SEPTARIAN NODULE  slab from Utah, USA. Golden creamy...
rockon-ro:MIMETITE (Lead Chloroarsenate). Yellow mimetite on...
rockon-ro:Rhodochrosite (Manganese Carbonate) from...
rockon-ro:CHRYSOCOLLA and MALACHITE (Copper Silicate/Carbonate) from Chihuahua, Mexico. Emerald gree
rockon-ro:CHALCANTHITE (Copper Sulfate) crystals that were grown in a laboratory by allowing a satur
rockon-ro:PETRIFIED WOOD from the Chinle Formation of Arizona. Colors are dependent on the chemistry
rockon-ro:SODALITE (Na-Al Silicate Chloride) from Namibia, Africa. Deep blue massive sodalite with w
rockon-ro:SODALITE (Na-Al Silicate Chloride) from Namibia, Africa. Deep blue massive sodalite with w
rockon-ro:PYRITE (Iron Sulfide on Marl) from Logrono, Spain (cubic crystal).
rockon-ro:LABRADORITE from Madagascar.
rockon-ro:Cleoniceras ammonites from the Albian stage of the Cretaceous from Madagascar. 150 million
rockon-ro:SODALITE (Na-Al Silicate Chloride) from Namibia, Africa. Deep blue massive sodalite with w
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