Section: 6 | Minerals and pigments (MP) | Page: 104 |
IRUG filename: IMP00104 | Data type: Infrared | 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, Sodalite group, Silicate class |
CAS name: Lazurite | Sample source 1: Roberson | Sample source 2: Forbes Pigment Collection, Straus Conservation Center, Fogg Art Museum |
Source location 2: 32 Quincy St, Cambridge, MA 02138 | Sample source 3: Forbes Pigment Collection Subset, Philadelphia Museum of Art, Scientific Laboratory, Marigene Butler | Source location 3: Box 7646, Philadelphia, PA, 19101, US |
Color: Blue | Age: 1933, dated, 65 yrs, at least | Application: MFTIR (Fourier transform infrared microspectroscopy) |
Mode: Tran | Originating institution name: Philadelphia Museum of Art | Originating institution acronym: PMA |
Linear formula: (Na,Ca)7-8(Al,Si)12(O,S)24[(SO4),Cl2,(OH)2] | CAS registry no: 1302-83-6 |