MANGANOAN KUTNOHORITE WITH CALCITE N'Chwaning II Mine , South Africa Let me say it is a "delicious" copy manganoan kutnohorita with calcite. This rare member of dolomite, a calcium carbonate with manganese, magnesium and some iron .
SCIENCE POSTER ~ MINERALS AN INTRODUCTION Crystals
shattuckite of a vivid blue color, in soft rolling carpets of acicular tiny crystals, filling a shallow cavity on this matrix specimen. The curving of the pocket, and the banded rim around it, combined with the accent of sparklling green malachite
chrysodrusy Sparkling specimen of Quartz drusy over Chysocolla! The specimen is perfectly centered and unblemished with a dazzling flash under any lighting. From the Ray Mine, Mineral Creek District, Pinal County, Arizona. Measures 6 cm by cm in size