JFD34AN7: Beautiful iridescent goethites appear not only in Huelva, but also in Murcia, in the famous San Valentín Quarry. They can be very beautiful, like this one that covers Quartz crystals and in which an elongated botryoidal group seems to form a narrow bridge over the Goethite itself. From Alain Martaud's collection, I liked it when I bought it from him because it was so elegant and original.
San Valentín open pit, Sancti Espíritu, Sierra Minera de Cartagena-La Unión, La Unión, Comarca Campo de Cartagena, Region of Murcia (Murcia)  Spain

Specimen size: 6.9 × 5.8 × 3.4 cm = 2.72” × 2.28” × 1.34”