Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
Unconfirmed - analyses by Anatoly Kasatkin showed no trace of Co; the material was a mixture of halotrichite and potassium alum (http://www.mindat.org/mesg-7-155381.html).