A beautiful contemporary vivianite from Morococala.  This mine is best known for the specimens it produced in the 80's, though there has been next to no production of note since then. These days, the majority of Bolivian vivianites on the market came from the Tomokoni Adit (those are the crystals on reddish-brown sandstone matrixes) with the occasional piece form Huanuni (typically a more bluish hue, on a sulfide rich matrix.)