Home > Laskowski Ⅴ – July 20 > MS1889 Ashcroftine-(Y)


Ashcroftine-(Y) is a hydrous sodium potassium yttrium silicate carbonate. Hey & Bannister (1933) named the species after Frederick Noel Ashcroft (1878-1949), mineral collector who bequeathed his collections to the Natural History Museum (London). Crystal structure solution by Moore et al. (1987) revealed a novel silicate framework, and revised the chemical formula of the species.

Aschroftine forms needles to 5 mm, and the largest aggregate 7 × 6 mm. Good for the mineral. From the collection of E.R. Laskowski (1949-2020), a mining engineer who retired to Tucson, Arizona.

Price: $100

Item code: MS1889

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