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Strunz Classification System
I - Elements
| Mineral | Formula | Classification |
| A - Metallic and intermetallic compounds | ||
| Series 5 - Lead series | ||
| Lead | Pb | I / A.5-20 |
| B - Semi-metals and non-metals | ||
| Series 1 - Arsenic - bismuth series | ||
| Antimony | Sb | I / B.1-30 |
| Bismuth | Bi | I / B.1-40 |
| Series 2 - Carbon series (graphite - lonsdaleite) | ||
| Graphite | C | I / B.2-10 |
| Series 3 - Sulfur - selenium series | ||
| Sulfur | S | I / B.3-10 |
Strunz Classification System I - II - III - IV - V - VI - VII - VIII/A - VIII/B - VIII/C - VIII/D - VIII/E - VIII/F - VIII/G - VIII/H - VIII/J - SW | ||