Amethyst (large piece)

 
Sample ID:
MVEZ007
Origin:
Mineral; Provenance: Mt Vesuvius, Campania, Italy
Chemical Information:
Purple variety of the mineral quartz, SiO2
Sample Type:
Reference material
Description:
Bulk sample
History of use:
Since antiquity
Sample Source:
Vesuvius National Park
Alternative names:
Purple quartz
Material Class:
Mineral pigments
Acquisition Conditions:
Current intensity: 10.60 µA
Tube voltage: 40 kV
Analysis time: 300 s
No filtering, air atmosphere