Specific gravity: 4.52 to 4.55
Colour: Yellowish-green, light yellow-green in transmitted light
Solubility: Readily soluble in strong acids
Emmonsite is an alteration product formed from earlier tellurium minerals in the
oxide zone of some hydrothermal precious metal deposits.
Associated minerals include tellurium, tellurite,
eztlite, gold and pyrite
At the Moctezuma Mine, Moctezuma Municipality, Sonora, Mexico, emmonsite was formerly abundant with schmitterite, cuzticite, sonoraite and other tellurites as a product of the oxidation of a tellurium - pyrite ore body (Dana).
At the type locality, Tombstone, Tombstone Mining District, Cochise County, Arizona, USA, emmonsite is associated with cerussite (Mindat).
At the Good Hope mine, Vulcan, Gunnison county, Colorado, USA, emmonsite occurs with sonoraite, rickardite and weissite (Dana).
At the Cripple Creek Mining District, Teller county, Colorado, USA, emmonsite occurs with native gold, tellurite and partially oxidisd calaverite (Minrec 36.2.169).
At Goldfield, Goldfield Mining District, Esmeralda county, Nevada, USA, emmonsite occurs with mackayite (Dana).
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