|
|
Vitrum caput in communi superficie |
vitreum in altum rotunditatem superficies |
|
Aspectus |
hyalina, pellucida, sine bullis et immunditiis manifestis |
hyalina, pellucida, sine bullis et immunditiis manifestis |
|
Amplitudo range |
20-140 reticulum (109-830 μm) |
10-40 reticulum (380-1700 μm) |
|
rotunditas |
≥ 80% |
≥ 90% |
|
Reflectivity |
≥ 1.5 |
≥ 1.5 |
|
Densitas |
2.4-2.6g/cm3 |
2.4-2.6g/cm3 |
|
Pelagus ingredientia |
SiO2 > 70% |
SiO2 > 70% |
