Clinozoisite

specimen number:
2062914

location:
Tepueste Ranch, Alamos, Sonora, Mexico

description:
Attractive pink sprays of acicular clinozoisite crystals measuring to 1.2 cm in length embedded in frozen throughout and epidote rich matrix. Classic locality for the species. The specimen comes with a previous label from the collection of Ray DeMark. His label notes that he obtained this through the New Mexico Natural History Museum in 1989.

The Alamos region in Sonora, Mexico, is historically renowned for its rich silver mining and complex metallogenic province characterized by extensive hydrothermal activity and contact metamorphism. Within this geological setting, Tepueste Ranch functions primarily as a localized mineral collecting site rather than a commercial mining operation, gaining recognition among specimen collectors for producing distinctive calc-silicate assemblages. The geology here involves altered limestones and skarn environments created by intrusive igneous activity, which provided the ideal thermal and chemical conditions for mineral genesis. Among the notable discoveries from this locality are striking specimens of pink radiating clinozoisite, often referred to as clinothulite. These prized crystal groupings acquire their vibrant pink hue from trace manganese impurities substituting within the mineral structure, forming delicate acicular or radiating clusters that are eagerly sought out by international mineral enthusiasts.

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