“Crystalline system: Orthorhombic (prism {100} and basal pinacoid {001}). Associated minerals at locality: acanthite, ancylite-(Ce), "apatite", brewsterite-Ba, brewsterite-Sr, calcite, celestine, chamosite, erythrite, "feldspar", fluorite, galena, "garnet", greenockite, harmotome, hemimorphite, heulandite-Ba, heulandite-Sr, hydrozincite, kainosite-(Y), marcasite, "mica", millerite, pyrite, quartz, sphalerite, titanite, and zircon (GREEN, D. L.; McCALLUM, D. UK Journal of Mines and Minerals, v. 26, n. 1, p. 23-26, 2005). Genesis: typical mineral of the low temperature carbonate veins, and as gangue in sulphidized mineral deposits (NEVES, P. C. P. das; ATENCIO, D. Enciclopédia dos minerais do Brasil - carbonatos, sulfatos e combinações orgânicas. ULBRA: Canoas, 2016, p. 80). Geology and Mineralogy Laboratory at ULBRA, Canoas, Rio Grande do Sul, Brazil (former Pércio de Moraes Branco Mineral Collection). Photography: Luciano Valério.”