- Vivianite, Wavellite
- Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosi Department, Bolivia
- Small Cabinet, 6.1 x 4.3 x 2.7 cm
Here is a great old locality specimen of Vivianite from Bolivia. Subscribers to the Mineralogical Record know that an entire issue was dedicated to this unique and historic locality. This size piece features a few beautiful, relatively sharp, gemmy, emerald-green color, prismatic crystals of Vivianite measuring up to 3.1 cm long associated with botryoidal Limonite after Wavellite. This material is rarely seen today and this particular specimen is at least 25 years old.