Description: Quartz coated by Mottramite or quartz after Baryte covered by Mottramite? Level 35, América Poniente? or Lugar San Juan Poniente, Mina Ojuela, Mapimi, Durango, Mexico 1.5 x 2 x 2.5 cm Base of the crystal coated by mottramite. This is quartz but the cross section of the crystal is not typical of quartz. Can it be a Baryte? Different specimen than the above.

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