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Tennantite

Named to honor Professor Smithson Tennant, a chemist of Oxford University at Oxford, England. Tennantite occurs in deposits metamorphosed by contact metamorphism as well as in hydrothermal veins. Found in over a thousand localities and related to tetrahedrite, but is more rare than tetrahedrite.

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

Tenorite

Named to honor Italian botanist Professor Michele Tenore of the University of Naples in Naples, Italy. Tenorite has hundreds of localities where it occurs in oxidized portions of hydrothermal copper deposits and also as a volcanic sublimate.

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

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