Properties
No property table for this entry: the article it resolves to has no infobox, so Mohs hardness, crystal system and the other properties are not available. Nothing has been estimated or added.
From the Wikipedia article
Borax is a salt normally encountered as a hydrated borate of sodium, with the chemical formula Na2H20B4O17. Borax mineral is a crystalline borate mineral that occurs in only a few places worldwide in quantities that enable it to be mined economically.
Source
Source record: crystal-compendium/borax/minerals.json. Fetched from English Wikipedia by the operator 2 October 2026.
https://en.wikipedia.org/wiki/Borax — revision id 1365821267. Text and properties from Wikipedia, licensed CC BY-SA 4.0.