Roselite private collection - Height: 6.1 cm - Width: 3.4 cm- 75 g - (1)

Roselite is a rare arsenate mineral, occurring with crystals of considerable size and of red or intense pink color. It owes its name to the German mineralogist Gustav Rose. Today it is used only as a mineral specimen.
The formation of Roselite is a story of hydrothermal alteration. Imagine an environment rich in arsenic and cobalt. Hot, aqueous fluids, loaded with dissolved elements, filter through the surrounding rocks. These fluids, under pressure and at elevated temperatures, react with the minerals around them. Cobalt arsenates, products of this interaction, crystallize out of the solution. The presence of cobalt gives this mineral its distinctive pink hue, a visual signature of its unique genesis. It is a relatively rare mineral, a testament to the specific conditions needed for its creation.