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Pyrocoproite: (Mg(K,Na))2P2O7
Comments: Admixture of platy indented crystals of pyrocoproite (p) and tabular opal-C (O). Location: Ghar al Hibashi (Hebashi) is a lava cave near Harrat Nawasif/Al Buqum, located east of Makkah in the Kingdom of Saudi Arabia. Scale: See Image. © Saudi Geological Survey
Comments: SEM image of pyrocoproite crystals with concoidal fracture. Location: Ghar al Hibashi (Hebashi) is a lava cave near Harrat Nawasif/Al Buqum, located east of Makkah in the Kingdom of Saudi Arabia. Scale: See Image. © Saudi Geological Survey