RQ17K9: Excellent miniature, very representative of the Almadén specimens. Showing well defined rhombohedron crystals, some of them with parallel growth. On matrix.
This specimen's photo has been reviewed and published in the magazine ‘Mineralogical Record’ on page 45 in the volume 50, number 1, January-February 2019, ('Almadén!')
San Teodoro shaft, Almadén Mine, Almadén, Comarca Valle de Alcudia, Ciudad Real, Castilla-La Mancha  Spain (±1978)

Specimen size: 3.0 × 1.8 × 1.4 cm = 1.18” × 0.71” × 0.55”

Main crystal size: 1.0 × 0.8 cm = 0.39” × 0.31”