Mineral Factbook

Papagoite

CaCuAlSi2O6(OH)3IMA symbol: Papapproved

Papagoite is a silicate mineral with the formula CaCuAlSi2O6(OH)3, crystallizing in the monoclinic system. It has a calculated density of 3.205 g/cm3. Its streak is light blue.

Photos

Papagoite specimen photo
Rept0n1x · CC BY-SA 3.0 · Commons
Papagoite specimen photo
Bubenik · CC BY-SA 3.0 · Commons
Papagoite specimen photo
Robert M. Lavinsky · CC BY-SA 3.0 · Commons
Papagoite specimen photo
Robert M. Lavinsky · CC BY-SA 3.0 · Commons

Crystallography

Crystal systemmonoclinic crystal systemWikidata (CC0)
Space groupC 1 2/m 1
Cell (Å, °)a = 12.926, b = 11.496, c = 4.696; α = 90, β = 100.81, γ = 90
Cell volume685.43 ų, Z = 4
Axial ratios1.1244:1:0.4085calculated from COD 9009827
Source structureCOD 9009827 (Mineralogy and Petrology, 1987)

Powder X-ray diffraction (calculated)

2θ (degrees, Cu Kα1)I/I₀ (max 100)
d (Å)2.8794.2892.2052.7986.3483.438
I/I₀10083.970.258.952.251.6

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9009827; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)3.205 g/cm³calculated from COD 9009827
Streak
light bluesingle sourceWikidata (CC0)

Chemistry (calculated)

Molecular weight333.79 g/molcalculated from the IMA formula
Composition (wt%)Ca 12.01%, Cu 19.04%, Al 8.08%, Si 16.83%, O 43.14%, H 0.91%

Classification

Nickel-Strunz (10th)9.CE.05Wikidata (CC0)
Nickel-Strunz (9th)9.CE.05Wikidata (CC0)