description: 2 1/2" across LOCALITY: Amelia Mine, Santa Rosalia, Baja California Sur, Mexico This piece consist of two large crystals of this rare silver-bearing mineral on a reinforced mud matrix. It may be that the crystals were pressed into a damp mud matrix which was allowed to harden in the hot sun. Regardless of this fact, if the crystals were loose, they would be large examples of this species that reaches its ultimate development at this famous mineral locality.
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