Groups of small crystals of Tennantite-(Fe), with very bright luster, forming parallel growths in some areas and with the dominant faces of a tetrahedron accompanied by minor forms. On matrix, associated with lustrous twinned crystals of Chalcocite. This specimen, which came from the last find before the definitive closure of open pit exploitation at this mine, has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, fase 6, levels 130-135, ↓175 m., Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia Spain (01/2020)
Specimen size: 4.4 × 3.6 × 0.7 cm = 1.73” × 1.42” × 0.28”
Main crystal size: 1 × 0.2 cm = 0.39” × 0.08”
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