Mineralpedia Details for Hidalgoite
Named after the type locality at the San Pascual mine in the state of Hidalgo in Mexico. Hidalgoite is an uncommon mineral that can be found in additional localities in the United States, France, Switzerland, Germany, England, Australia, and Namibia, among a few others. It occurs as a secondary mineral in oxidized polymetallic sulfide deposits.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/hidalgoite.pdf
Hidalgoite from Gold Hill mine, Tooele Co., Utah, United States
Vitreous botryoidal crystals to 0.5mm.
Hidalgoite from Tsumeb mine, Tsumeb, Namibia
Excellent lime green acicular crystals of Hidalgoite to about 0.75mm.
Lime green very fine micro Hidalgoite crystals lining the many vugs of this specimen with dark green crystals of cuprian Adamite to 1mm. Hidalgoite from Tsumeb represents some of the best in the world.
Hidalgoite from Kintore Opencut, Broken Hill, New South Wales, Australia
Olive or grass green crustations and overgrowths on Pyromorphite(?).