Ameghinite
(repeating unit)NaB3O3(OH)4 IMA symbol Agh[1] Strunz classification 6.CA.10 Crystal system Monoclinic Crystal class Prismatic (2/m)
(same H-M symbol) Space group C2/c
(same H-M symbol)
Ameghinite, Na[H4B3O7][2] or NaB3O3(OH)4,[3][4] is a mineral found in Argentina. It is a soft mineral with a Mohs hardness of 2–3. Ameghinite has a monoclinic crystal system.
It was first described in 1967 for an occurrence in the Tincalayu Mine, Salar Del Hombre Muerto, Salta, Argentina.[2] It was named for Argentine geologist brothers, Carlos Ameghino (1865–1936) and Florentino Ameghino (1854–1911).[3]
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