guejariteMin.|ˈgiːdʒəraɪt| [f.Guejar (in Sp. pronounced geˈxar), a district of Andalusia: see -ite. Named by Cumenge, 1879.] Sulphantimonide of copper, found in ortho-rhombic crystals of a steel-grey colour. 1880Min.Mag. IV. 64 Guejarite is..isomorphous with Wolfsbergite.