Bluish Bornite pseudomorphs after twinned Chalcocite crystals. The specimen comes from the last find before the definitive closure of open-pit mining at this mine and shows, for the first time from this locality, Bornite in collection-quality specimens.
These specimens have been analyzed and we will send a copy of the analysis to the buyer. This specimen has been published on the Mineralogical Record´s web page, in the 'What's New' section, report 61, August 30, 2021 edition, page 9
Las Cruces Mine, fase 6, levels 130-135, ↓175 m., Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia Spain (01/2020)
Specimen size: 2.5 × 1.8 × 1.4 cm = 0.98” × 0.71” × 0.55”
Main crystal size: 0.6 × 0.4 cm = 0.24” × 0.16”
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