Chalcocite with Sb-rich Tennantite-(Fe) and Pyrite

Specimen ID: 8L8-9GG

Title
Chalcocite with Sb-rich Tennantite-(Fe) and Pyrite
Locality
As recorded:
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain
Dimensions
65mm x 44mm x 27mm
Certificates
Description
Very sharp Chalcocite crystals that form hexagonal cyclic twins with well defined faces and edges, flattened, lustrous, on matrix, with tetrahedral crystals of antimony-rich Tennantite-(Fe) and coatings of botryoidal pyrite. The specimen has been analyzed and we will send a copy of the analysis to the buyer. Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain Specimen size: 6.5 × 4.4 × 2.7 cm = 2.56” × 1.73” × 1.06” Main crystal size: 0.1 × 0.1 cm = 0.04” × 0.04”
Previous data
Mineral(s)
Name withheld

Events

Photo added to mindat.org

Very sharp Chalcocite crystals that form hexagonal cyclic twins with well defined faces and edges, flattened, lustrous, on matrix, with tetrahedral crystals of antimony-rich Tennantite-(Fe) and coatings of botryoidal pyrite. The specimen has been analyzed. Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia, Spain Specimen size: 6.5 × 4.4 × 2.7 cm = 2.56” × 1.73” × 1.06” Main crystal size: 0.1 × 0.1 cm = 0.04” × 0.04” Reference: NE11AL4
Jordi Fabre - 7th November 2021

Photo added to mindat.org

Very sharp Chalcocite crystals that form hexagonal cyclic twins with well defined faces and edges, flattened, lustrous, on matrix, with tetrahedral crystals of antimony-rich Tennantite-(Fe) and coatings of botryoidal pyrite. The specimen has been analyzed. Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia, Spain Specimen size: 6.5 × 4.4 × 2.7 cm = 2.56” × 1.73” × 1.06” Main crystal size: 0.1 × 0.1 cm = 0.04” × 0.04” Reference: NE11AL4
Jordi Fabre - 16th February 2023
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