quetzalcoatlite

{{Infobox mineral | name =Quetzalcoatlite | boxwidth = | boxbgcolor = | image =Quetzalcoatlite-77801.jpg | imagesize = | alt = | caption =Blue quetzalcoatlite on quartz from the Bambollita Mine (Oriental Mine), Moctezuma, Mun. de Moctezuma, Sonora, Mexico. Picture width 2 mm. | category = Oxide mineral | formula = Zn6Cu3(TeO6)2(OH)6·AgxPbyClx+2y | IMAsymbol = Pzl | molweight = | strunz = 4.FE.45 | dana = 34.6.3.1 | system = Trigonal | class = Hexagonal scalenohedral (m) H-M symbol: ( 2/m) | symmetry = Pm1 | color = Blue, green in transmitted light | colour = | habit = needle-like hexagonal crystals, crystalline crusts, sprays | twinning = | cleavage = Fair on {1010} | fracture = Brittle | tenacity = Brittle | mohs = 3 | luster = Pearly, dull | streak = Pale blue, almost white | diaphaneity = Transparent | gravity = 6.05 (measured) | density = | polish = | opticalprop = Uniaxial (−) | refractive = | birefringence =δ = 0.062 | pleochroism = blue-green | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence =None | absorption = | melt = | fusibility = | diagnostic = | solubility = Insoluble in water, soluble in cold HCl and cold HNO3. Decomposes in KOH when heated | impurities = | alteration = | other = | prop1 = | prop1text = | references = }}

Quetzalcoatlite is a rare tellurium oxysalt mineral with the formula Zn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2y. It also contains large amounts of silver- and lead(II)chloride with the formula AgxPbyClx+2y (x+y≤2). It has a Mohs hardness of 3 and it crystallizes in the trigonal system. It has a deep blue color. It was named after Quetzalcoatl, the Aztec and Toltec god of the sea, alluding to its color. It is not to be confused with tlalocite, which has a similar color and habit.