Vivianite Amber Insect Please keep in mind that

Please keep in mind that this mineral typically forms in very thin needles that create radiating aggregates

even in toenail/small miniature sized crystals like this one

This piece has some of the largest individual crystals of Wavellite that I have seen from Bolivia

Colorado was a prominent figure and collector of Colorado minerals

black cyclic twinned crystals which are associated with Quartz on matrix

Vivianite Amber Insect Please keep in mind thatHere is a great old locality specimen of Vivianite from the Siglo XX mine in Bolivia. Subscribers to the Mineralogical Record know that an entire issue was dedicated to this unique and historic locality. This small cabinet size piece features a few beautiful, relatively sharp, gemmy, blue green color, prismatic crystals of Vivianite (some are actually doubly terminated!) associated with botryoidal Wavellite which is coated replaced by Limonite. This