1. Home>
  2. Search IRUG Spectral Database>
  3. Interactive IRUG Spectrum

Interactive IRUG Spectrum

Section: 6 Minerals and pigments (MP) Page: 72

 Copyright © 1993-2024 Infrared and Raman Users Group (IRUG)


Details

IRUG filename:
IMP00072
Data type:
Infrared
IRUG material class:
Minerals and pigments (MP)
Sample type:
Art object / artifact
Common name(s):
Paratacamite, atacamite mixture, Greek bronze spear corrosion
Chemical/botanical name(s):
Basic copper chloride, copper chloride hydroxide
CAS name:
Paratacamite (Cu2Cl(OH)​3), Atacamite (Cu2Cl(OH)​3)
Sample source 1:
Greek bronze spear corrosion
Sample source 2:
Fogg Art Museum
Source location 2:
32 Quincy St, Cambridge, MA, 02138, US
Color:
Blue-green
Age:
50 yrs, or more
Application:
MFTIR (Fourier transform infrared microspectroscopy)
Mode:
Tran
Originating institution name:
Freer Gallery of Art, Smithsonian Institution
Originating institution acronym:
FGA
Molecular formula:
H3 Cl Cu2 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 #F284