Ferrierite-Mg - Type locality for this mineral - a geode-like formation with pink to red radiating crystals. Comes with an old Columbia University tag. This and many more mineral specimens are available for sale at Dakota Matrix Minerals.
Rare Yellow Wavellite Rare Yellow Wavellite on Green Wavellite Botryoidal Crystals on Chert from Mauldin Mountain near Mt. Ida, Arkansas, a vintage specimen Wavellite is an uncommon phosphate mineral closely related to turquoise. The yellow wavellites a
Rose Quartz Geode - Druzy Cabochon What is Druzy? Druzy crystals take hundreds or even thousands of years to form. They form as molten rock begins to cool with trapped gases inside. The gases cause gaps in the rock. As groudwater flows through these gap
Uranocircite is a uranium mineral with the chemical formula: It is a phosphate mineral which contains barium and is a green to yellow colour. It has a Mohs hardness of about x cm crystal group of uranocircite with a minor amount of attached matrix.