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Alforsite: Ba5(PO4)3Cl
Comments: Three small grains of alforsite mounted on tape. Location: La Madrelena, Baja California, Mexico. Scale: Not Given. © Rhonda Spencer / ASDM Sonoran Desert Digital Library
Gruzdevite: Cu6Hg3Sb4S12
Comments: Black aggregates of gruzdevite in matrix. Location: Moctezuma mine, Sonora, Mexico. Scale: Picture Size 1 cm. © Rhonda Spencer / ASDM Sonoran Desert Digital Library
Susannite: Pb4(SO4)(CO3)2(OH)2
Comments: White crystals of susannite on matrix. Location: Iquiqui, Sonora, Mexico. Scale: Specimen Size 1.25 x 1 x .75 inches. © Rhonda Spencer / ASDM Sonoran Desert Digital Library