Papagoite

Papagoite is a rare cyclosilicate mineral. Chemically, it is a calcium copper aluminium silicate hydroxide, found as a secondary mineral on slip surfaces and in altered granodiorite veins, either in massive form or as microscopic crystals that may form spherical aggregates. It was discovered in 1960 in Ajo, Arizona, USA, and was named after the Sand Papago peoples (now named Hia C-ed O'odham) that inhabit the area. This location is the only papagoite source within the United States, while worldwide it is also found in South Africa and Namibia. It is most strongly associated with ajoite, and is also found with quartz in South Africa. Its bright blue colour is the mineral's most notable characteristic.
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General Information:
 Chemical Formula:
CaCuAlSi2O6(OH)3
 Composition:
(Molecular Weight = 333.79 gm)
Calcium 12.01 % Ca
Aluminum 8.08 % Al
Copper 19.04 % Cu
Silicon 16.83 % Si
Hydrogen 0.91 % H 
Oxygen 43.14 % O 
 Empirical Formula:
CaCuAlSi2O6(OH)3
 Environment:
Secondary mineral.
 IMA Status:
Approved IMA 1960
 Locality:
Ajo mine, Poma Co., Arizona.
 Name Origin:
Named after the papago indian tribe, Arizona, USA.
Physical Properties:
 Cleavage:
[100] Imperfect
 Color:
light blue.
 Density:
3.25
 Diaphaniety:
Transparent to translucent
 Habits:
Encrustations - Forms crust-like aggregates on matrix., Cryptocrystalline - Occurs as crystals too small to distinguish with the naked eye.,
 Hardness:
5-5.5 - Apatite-Knife Blade
 Luster:
Vitreous (Glassy)
 Streak:
light blue
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