Site of the Pulpi geode, Almeria, Spain. These mountains house the largest geode ever discovered. Geodes are rocks that are hollow in the centre. The

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Site of the Pulpi geode, Almeria, Spain. These mountains house the largest geode ever discovered. Geodes are rocks that are hollow in the centre. The interior is often lined with crystals. The crystals in the Pulpi geode are formed from gypsum and measure around metres in length. The geode itself is cigar-shaped and measures 8 metres long by metres wide. It was discovered in 1999.

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Photo credit: © JAVIER TRUEBA/MSF/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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Keywords: almeria, biggest, crystal, crystals, de, europe, european, geoda, geode, geological, geology, giant, gran, gypsum, hollow, jaravia, large, largest, mineral, mineralogy, mountain, pilar, pulpi, range, rock, spain, spanish