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Interactive IRUG Spectrum

Section: 6 Minerals and pigments (MP) Page: 70

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Details

IRUG filename:
IMP00070
Data type:
Infrared
IRUG material class:
Minerals and pigments (MP)
Sample type:
Art object / artifact
Common name(s):
Paratacamite, atacamite mixture
Chemical/botanical name(s):
Basic copper chloride, copper chloride hydroxide
CAS name:
Paratacamite (Cu2Cl(OH)​3), Atacamite (Cu2Cl(OH)​3)
Sample source 1:
Egyptian bronze hawk
Sample source 2:
Fogg Art Museum
Source location 2:
32 Quincy St, Cambridge, MA, 02138, US
Color:
Blue-green
Age:
35 yrs, or more
Application:
Transmission FTIR spectroscopy
Mode:
Tran
Originating institution name:
Freer Gallery of Art, Smithsonian Institution
Originating institution acronym:
FGA
Molecular formula:
Cl Cu2 H3 O3 (for both)
Linear formula:
Cu2Cl(OH)3 (for both)
CAS registry no:
12186-00-4 (Paratacamite), 1306-85-0 (Atacamite)
Other analytical methods:
XRD (x-ray diffraction), Film F285