IMA mineral species

Ammonioborite

(NH₄)₃B₁₅O₂₀(OH)₈·4H₂O

Borate mineral.

Ammonioborite specimen — Ammonioborite.jpg · Wikimedia Commons (see file page for author & license)

Properties

🔷 Monoclinic

Chemical formula	(NH₄)₃B₁₅O₂₀(OH)₈·4H₂O
Elements	N, H, B, O
Crystal system	Monoclinic
Mohs hardness	—
Density	—
Streak	—
Color	—
IMA symbol	Abo
Nickel–Strunz class	6.EA.15

“—” means no reliable value in Wikidata yet. Check Mindat for full data.

🌍 Where it's found

Type locality (where it was first described): Larderello, Italy

Type locality
Notable source / deposit
Country of origin

Marker positions are approximate (region or locality level). Type localities from Wikidata; notable sources curated by Crystopedia.

Learn more

Ammonioborite on Mindat.org
Wikidata item Q3614464 (source of this page's data – you can correct it there)