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Interactive IRUG Spectrum

Section: 7 Mixtures (MX) Page: 15

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


Details

IRUG filename:
IMX00015
Data type:
Infrared
IRUG material class:
Mixtures (MX)
Sample type:
Art object / artifact
Common name(s):
Ultramarine blue, natural, linseed oil, Pigment Blue 29 (PB29), CI77007
Chemical/botanical name(s):
Sodium calcium aluminum silicate sulfate, Sodalite group, Silicate class
CAS name:
Lazurite
Sample source 1:
The Holy Family, Poussin
Source location 1:
Sky
Sample identifier 1:
Acc. No. 1942.168
Sample source 2:
Fogg Art Museum
Source location 2:
32 Quincy St, Cambridge, MA, 02138, US
Color:
Blue
Age:
1650, dated, 359 yrs, at least
Application:
Transmission FTIR spectroscopy
Mode:
Tran
Originating institution name:
Straus Center for Conservation, Harvard University Art Museums
Originating institution acronym:
HUAM
Linear formula:
(Na,Ca)7-8(Al,Si)12(O,S)24[(SO4),Cl2,(OH)2]
CAS registry no:
1302-83-6
Other analytical methods:
PLM (polarized light microscopy), Feb 1999