|
Sample ID:
PK40700
|
Origin:
Mineral; Provenance: Italy
|
Chemical Information:
Natural earth pigment; calcined raw umber
|
|
Sample Type:
Reference material
|
Description:
Powder sample (0-120 µ)
|
History of use:
Since antiquity
|
|
Sample Source:
Kremer Pigments
|
Alternative names:
C.I. Pigment Brown 8, PBr8, Manganese Brown
|
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: 5000 ms |
