Rare spherical Halloysite with Calcite and Manganite in a vug

Rare spherical Halloysite with Calcite and Manganite in a vug on matrix with Manganese dendtrites Typically found as earthy to somewhat waxy-looking, extremely fine-grained clayey masses, white to tan and also occasionally bluish or greenish. Also reported as a biomineral formed by the action of lichen (e.g., Lasallia spp., Mucor spp., etc.) on cave deposits and waters (Burford et al., 2003). Kamariza mines, Attica, Greece. Found in 1978 Matrix Size : 5.1 x 7.6 x 3.9 mm Spherules from 0.5 to 2 mm

Schätzpreis:€1

Alle Objekte ansehen vonCatawikioderEtnografica