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Ajoite
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Ajoite
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Mineralogy Database Dictionary | ![]() |
Ajoite
General Information:
(K,Na)Cu7AlSi9O24(OH)6·3(H2O)
(Molecular Weight = 1,302.14 gm)
Potassium 2.70 % K
Sodium 0.18 % Na
Aluminum 2.07 % Al
Silicon 19.41 % Si
Copper 34.16 % Cu
Hydrogen 0.93 % H
Oxygen 40.55 % O
K0.9Na0.1Cu7AlSi9O24(OH)6·3(H2O)
Secondary copper mineral.
New Cornelia mine, Ajo, Pima County,, Arizona, USA.
Named for the locality.
Physical Properties:
[010] Perfect
blue green.
2.96
Translucent
Massive - Uniformly indistinguishable crystals forming large masses., Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape., Platy - Sheet forms (e.g. micas).
Vitreous (Glassy)
greenish white
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