Quartz with Siderite

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: 9.8 × 7.2 × 6 cm = 3.86” × 2.83” × 2.36”
Main crystal size: 5.5 × 4.6 cm = 2.17” × 1.81”