OLMIITE/POLDERVAARTITE SPECIMENS

Olmiite and poldervaartite are closely related, rare calcium-manganese silicate minerals best known from South Africa’s famous Kalahari Manganese Field. They typically occur as attractive rounded aggregates and crystal clusters in shades of pink, peach, tan, and brown. Browse our selection of natural olmiite and poldervaartite mineral specimens, including examples from the renowned N’Chwaning mines of South Africa.