Min. [‘f. the pampas del Tamarugal’ (Chester); see -ITE1 2 b.] Hydrous sulphate of aluminium and sodium; a sodium alum.
1890. Amer. Jrnl. Sci., Ser. II. XL. 258. One of these [sulphates] is tamarugite: this occurs in massive forms, colourless and with a radiated structure.
