Mt. Cavalluccio, Campagnano di Roma, Sacrofano Caldera, Rome Province, Latium, Italy - Rare specimen of Peprossiite-Ce on matrix. According to mindat, this mineral species is the first anhydrous rare-earth-element borate and is found in only 4 localities, all located within Latium, Italy. Thumbnail of 1.2x1x0.9 cm
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