On eBay Now...RARE PAPAGOITE QUARTZ Crystal Cluster Mineral Specimen MESINA MINE SOUTH AFRICA For Sale
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RARE PAPAGOITE QUARTZ Crystal Cluster Mineral Specimen MESINA MINE SOUTH AFRICA:
$799.99
This specimen weighs 1.74 grams. It measures 18 mm x 9 mm x 8 mm.I offer a shipping discount for customers who combine their payments for multiple purchases into one payment!The discount is regular shipping price for the first item and just 50 cents for each additional item!
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and I will buy back the item for your full purchase price.Hi there. I am selling this incredibly rare papagoite in quartz specimen! This specimen is from Messina Copper Mine in South Africa. If you have any questions, do not hesitate to ask me. Have fun offerding, thanks so much for visiting my sale and have a great day!
Papagoite
From Wikipedia, the free CyclosilicateFormula CaCuAlSi2O6(OH)3IMA symbol Pap[1]Strunz classification 9.CE.05Crystal system MonoclinicCrystal class Prismatic (2/m)(same H-M symbol)Space group C2/mUnit cell a = 12.92 Å, b = 11.49 Å,c = 4.69 Å; β = 100.81°; Z = 4IdentificationColor Dark blue crystals, light blue when massiveCrystal habit Massive; cryptocrystalline, forming flat elongated crystalsCleavage Imperfect in one directionFracture BrittleMohs scale hardness 5–5.5Luster Vitreous to dullStreak Light blueSpecific gravity 3.25Optical properties Biaxial (-)Refractive index nα = 1.607 nβ = 1.641 nγ = 1.672Birefringence δ = 0.065Pleochroism Trichroic2V angle Measured: 78°References [2][3][4][5]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. Its chemical formula is Ca Cu Al Si2O6(O H)3.
It was discovered in 1960 in Ajo, Arizona, US, and was named after the Hia C-ed O'odham people (also known as the Sand Papago) who inhabit the area.[5] This location is the only papagoite source within the United States, while worldwide it is also found in South Africa and Namibia. It is associated with aurichalcite, shattuckite, ajoite and baryte in Arizona, and with quartz, native copper and ajoite in South Africa.[5] Its bright blue color is the mineral's most notable characteristic.
It is used as a gemstone.[6]