Mineralpedia Details for 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
Tenorite from Majuba Hill mine, Pershing Co., Nevada, United States
Black "spots" of Tenorite to 5mm with associated bluish Clinoclase.
Tenorite from Bisbee, Cochise Co., Arizona, United States
Black, shiny, elongated crude crystals from 1-2mm.