Mottramite | ©Washington Minerals Rare botryoidal Mottramite stalactite from Ojuela Mine,
Mottramite | ©Washington Minerals Rare botryoidal Mottramite stalactite from Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico. Specimen is 5.3 x 1.3 x 1.3 cm (2-1/16 x ½ x ½ in). -- source link
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