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Ambrinoite

Named for the mineral collector who provided and studied the specimens, Pierluigi Ambrino. Ambrinoite is a rare mineral that is found only at the type locality in a Triassic evaporitic formation of gypsum near Signols in Piedmont, Italy. This sulfosalt is associated with sulfur and orpiment and occurs with galkhaite, stibnite, and enargite. It appears as red, resinous aggregates of tabular crystals.

Ref. Biagioni, C. et al. and American Mineralogist May-June v. 96 (2011) no. 5-6 p. 878-887

Amesite

Named to honor mine owner James Ames. Amesite is a rare mineral that is the result of the low-grade metamorphism of aluminum and magnesium rich rocks. It can be found in localities in the United States, Canada, Antarctica, South Africa, Russia, Sweden, and Poland, among several others. Assocaited minerals include vesuvianite, chlorite, magnetite, rutile, diaspore, grossular, calcite, diopside, and clinozoisite.

 Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/amesite.pdf

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