RH99F9: A beautiful group of prismatic crystals on the typical Calcite matrix from St. Andreasberg. in spite of its antiquity (it was purchased by Folch in 1955 but surely is much older) it is perfectly preserved and the crystal surface has reddish reflections not always present in the species.
St. Andreasberg mining area, Goslar District, Harz, Lower Saxony/Niedersachsen  Germany

Specimen size: 4.7 × 4.7 × 2.7 cm = 1.85” × 1.85” × 1.06”

Main crystal size: 0.7 × 0.5 cm = 0.28” × 0.20”