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Legrandite: Zn2(AsO4)(OH)·(H2O)
Comments: Prismatic crystal of yellow legrandite on a gossanous matrix. Location: Mina Ojuela, Mapimi, Durango, Mexico. Scale: 2.5 x 1.7 x 1.4 cm. © Fabre Minerals
Comments: Yellow crystals of legrandite partially covering an iron-oxide gossan. Location: Oujela Mine, Mapimi, Durango, Mexico. Scale: Crystal size 6 mm. © John Veevaert