Specimens of crystalline baryte from Reigate, Surrey, UK. Baryte (also spelt barite) is a widely occurring mineral consisting of barium sulphate. Any barite specimen is incredibly dense, with small pieces even feeling heavier than they appear, which is surprising, considering it is a non metallic mineral. This density was how the mineral obtained its name, being derived from the Greek word 'βάρυζ' meaning heavy. It occurs in a range of environments and deposited via many processes including biogenic, hydrothermal and evaporation, among others. Commonly occurring in lead-zinc veins hence some of the samples contain galena (lead sulphide) as well. These particular samples of baryte are crystals with various shades of yellow colour, the crystals are incomplete and therefore show no identifiable crystal system. Specimens are supplied in a 1.5 " x 1.5" white card tray or in a plastic magnifier box with an information label, these pieces are ideal for mineral and crystal collectors or collectors of British minerals.