MARTIN LAND / SCIENCE PHOTO LIBRARY MARTIN LAND / SCIENCE PHOTO LIBRARY
Celestite crystals. Celestite (strontium sulphate, formula: SrSO4), is a mineral that is often found in limestone or sandstone. It is used to prepare nitrates of strontium for the red colour in fireworks and tracer bullets. It is also used to prepare strontium compounds used in the refining of sugar from sugar beet. It is commercially mined in Germany, Mexico and England. This specimen is from Madagascar.
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