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Formula: Cu2+(Te4+O3).H2O
Tellurite
Crystal System: Orthorhombic
Specific gravity: 4.13 measured
Hardness: 3 to 3½
Colour: Blue-green
Luminescence: No fluorescence under UV
Solubility: Insoluble in water, easily soluble in cold dilute acids or 40% KOH
Environments
Graemite occurs as a rare dehydration product of teineite, as
pseudomorphs and incrustations.
(HOM)
Localities
At the type locality, the Cole Mine, Bisbee, Cochise County, Arizona, USA, graemite occurs as blue-green to
jade-green crystals up to 8 mm long, replacing teineite crystals embedded
in malachite and associated with
cuprite
(AM 60.486).
The graemite is formed by oxidation of a hypogene ore
deposit
(Mindat).
At Dome Rock Mountains, Yuma County, Arizona, USA, graemite occurs replacing
teineite, in cavities in samples containing
chalcocite, corroded bornite,
weissite, brochantite,
malachite, djurleite,
gold and goethite
(AM 60.486, HOM).
At the Trixie Mine, East Tintic Mining District, Utah County, Utah, USA, graemite crystals occur on a matrix
of quartz associated with teineite,
gold, rickardite and
hessite. They are green in colour, and appear to be an alteration product
after another mineral, probably teineite
(MinRec 55.2.205).
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