Lapis Lazuli

 
Sample ID:
PK1056038
Origin:
Natural mineral; Provenance: Chile
Chemical Information:
(Na,Ca)8[(SO4,S,Cl)2(AlSiO4)6]
Sample Type:
Reference material
Description:
Powder sample (25-38 µ)
History of use:
Since antiquity
Sample Source:
Kremer Pigments
Alternative names:
C.I. Pigment Blue 29, PB29, Ultramarine, Ultramarine Blue, Natural Ultramarine, Azurum Ultramarinum
Material Class:
Mineral pigments
Acquisition Conditions:
Excitation source: 785 nm
Laser spot size: 170 µm
Resolution: 7 cm-1
Laser power: 1 mW
Acquisition time: 500 ms