Celestine, (Celestite)

Celestine, (Celestite)

Celestine,  SrSO4  is Strontium Sulphate. Celestine is derived from the Latin word for celestial, meaning heaven, and further from caelum meaning sky, because it is often pale blue in colour. This specimen is from Erfoud in the Sahara desert, eastern  Morocco, and is a geode lined with colourless, translucent, almost clear, bladed crystals.