TMX90CD5: Group of octahedral Pyrite crystals, very lustrous, with very well defined faces and edges, and with golden reflections on the faces that have rough shapes, with somewhat developed and very smooth edges, and with the vertices truncated by pinacoid faces that in turn show growth striations.
Of considerable size and great crystallographic complexity.
Huanzala Mine, Huallanca District, Dos de Mayo Province, Huánuco Department  Peru (08-11/2023)

Specimen size: 15 × 11.1 × 5.9 cm = 5.91” × 4.37” × 2.32”

Main crystal size: 3.5 × 3.1 cm = 1.38” × 1.22”