Jurassic-Upper Triassic outcrops of tholeite dolerites (ophites) near the Estopiñan dam.
References:
- B. Azambre et al. , Bull. Minéral, 1987, 110, 379-396.
- Calvo, M. (2008) Minerales de Aragón. Prames (Zaragoza). 463 pages
Mineral List:3 entries listed. 3 valid minerals.
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