George Balogh's Photo Gallery
5EU-8D5Tangeite CaCu(VO4)(OH)
Manganese Mine, Copper Harbor, Grant Township, Keweenaw County, Michigan, USAField of View: 500 μm
Largest Crystal Size: 300 μm
SEM image of tangeite crystal in small vug in manganese matrix etched free of calcite with household vinegar; specimen collected by Keith Peregrine, processed by George Balogh; imaged by Owen Mills at Michigan Technological University (MTU), May 2017. Identification of the main crystal confirmed by EDS, also at MTU. EDS spectrum can be provided on request.