silica-based glass
quartz glass
fused silica
fused quartz
ORCID:0000-0002-4366-3088
This is "pure" silica glass. As an ENVO:"environmental material" this class assumes that there remains some possibility that 'contaminants' being present.
Quartz glass is a glass which is composed of silica in amorphous (non-crystalline) form.