| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | chromite | Middle East | Chromite is not a commonly known mineral and does not hold significant cultural or industrial importance. | 1 |
| 2 | potassium chromate | Middle East | Potassium chromate is not commonly used and may be restricted due to its toxic and hazardous nature. | 1 |