Borax
Borax is a mineral with the chemical formula Na2B4O7·10H2O. It has a Mohs hardness of 2.5 - 3.5 and vitreous to pearly luster.
Borax properties
| Type | Mineral |
|---|---|
| Chemical formula | Na2B4O7·10H2O |
| Mohs hardness | 2.5 - 3.5 |
| Luster | Vitreous to pearly |
| Typical colors | Colorless, white, gray, yellow, or greenish |
| Formation | Typically formed through the evaporation of saline lake waters and in hot springs |
| Rarity | 3 / 10 |
Mohs hardness 2.5–3.5 — soft
1 · Talc5 · Apatite10 · Diamond
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