Monastir, Cagliari Province, Sardinia, Italy

(K₂,Na₂,Mg,Ca)_3-5Mg[Al_5-7Si_27.5-31O₇₂]·18H₂O

One complete and two partial spheres of orange colored Ferrierite. Specimens from this location are considered the best for the species. There is also an unidentified clear crystaline material near the base of the mineral. The specimen is in good condtion but there are two sections on the largest sphere which are white which may be due to matting of the hair like crystals (hard to tell even with a 10x loupe).

3.4 x 2.4 x 2.4 cm

Sold Specimen retained as part of the Minerals Sold But Not Forgotten Galleries