Szaibelyite
Mineral MgBO2(OH)
Also called Ascharite
About it
White to yellowish fibrous and nodular masses of magnesium borate formed in skarns and salt deposits. An important boron ore in northeastern China and Russia.
- Type
- Mineral
- Group
- Borate
- Formula
- MgBO2(OH)
- Hardness (Mohs)
- 3–3.5
- Specific gravity
- 2.6–2.7
- Streak
- white
- Lustre
- vitreous (glassy), silky
- Crystal system
- Monoclinic
- Colours
- white, yellowish
- Transparency
- translucent, opaque
Typical values: real specimens vary. For more, see mindat.org.