Tlapallite

tlapallite

sericite

carlfriesite

tellurium

Images

Formula: (Ca,Pb)3CaCu6O2[Te4+3Te6+O12]2(Te4+O)2(SO4)2.3H2O
Tellurite
Specific gravity: 4.65 to 5.38
Hardness: 3
Streak: Pale green
Colour: Viridian-green
Luminescence: No fluorescence in UV
Environments

Metamorphic environments environments
Hydrothermal environments

Localities

At the type locality, the Bambollita Mine, Moctezuma, Moctezuma Municipality, Sonora, Mexico, tlapappite was found as thin paint-like films on rock fractures in and adjacent to thin veins cutting intensely sericitised rhyolite (AM 64.465). Associated minerals include sericite, quartz, calcite and baryte (Mindat).

At the Moctezuma mine, Moctezuma, Moctezuma Municipality, Sonora, Mexico, tlapappite occurs very rarely in partially oxidised portions of a tellurium-bearing polymetallic hydrothermal sulphide deposit, associated with carlfriesite, calcite, baryte, muscovite and quartz (HOM).

At the Old Guard Mine, Tombstone, Tombstone Mining District, Cochise County, Arizona, USA, tlapappite occurs as an alteration product of tellurides in calc-silicate tactite (HOM).

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