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RMP00238 Ultramarine, genuine; Roberson, Forbes; 8.02.19; 514; WM; scat
3201
2962
2724
2485
2247
2008
1770
1531
1293
1054
816
577
339
100
0.02
0.61
1.21
1.80
2.40
Submitter
Section: 6 Minerals and pigments (MP) Page: 238

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Details

IRUG filename:
RMP00238
Data type:
Raman
IRUG material class:
Minerals and pigments (MP)
Sample type:
Reference material
Common name(s):
Ultramarine, genuine (natural), Pigment Blue 29 (PB29), CI77007
Chemical/botanical name(s):
Sodium calcium aluminum silicate sulfate
CAS name:
Lazurite
Sample source 1:
Roberson
Source location 1:
London
Sample identifier 1:
Genuine Ultramarine, No. 67
Sample source 2:
Forbes Pigment Collection, Fogg Art Museum (Harvard Art Museums)
Source location 2:
32 Quincy St, Cambridge, MA 02138, US
Sample identifier 2:
8.02.19
Sample source 3:
Forbes Pigment Collection, Winterthur Museum
Source location 3:
5105 Kennett Pike, Winterthur, DE 19735, US
Color:
Blue
Age:
1933, dated
Application:
Raman microscopy/microspectroscopy
Excitation source (nm):
514
Mode:
Scat
Originating institution name:
Winterthur Museum, Garden & Library
Originating institution acronym:
WM
Linear formula:
(Na,Ca)7-8(Al,Si)12(O,S)24[(SO4),Cl2,(OH)2] (ideal)
CAS registry no:
1302-83-6