MR86Z0: Aggregate of very aerial and very well-defined crystals with perfect terminations. The sample is of high quality, especially enhanced by the photography (you must consider the small size of the sample). From the type locality for the species.
The sample has been noted and photographed in the monograph ‘St. Andreasberg’ of the Mineralogical Record magazine (May-June 2017, pg. 359)
St. Andreasberg mining area, Goslar District, Harz, Lower Saxony/Niedersachsen  Germany

Specimen size: 1.8 × 0.9 × 0.7 cm = 0.71” × 0.35” × 0.28”