LISKEARDITE

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Liskeardite is a very rare aluminium iron arsenate hydroxide hydrate named after the town of Liskeard in Cornwall near to the Type Locality at Marke Valley mine. The original material was discovered over a century ago, but in more recent times superb crystallized specimens have been discovered at Penberthy Croft mine near St. Hilary further west in Cornwall. This excellent crystallized miniature specimen contains many cavities lined with velvety, white acicular Liskeardite crystals. The back of the specimen has several cavities lined with excellent grey-green glassy Scorodite microcrystals. Magnification is required to best appreciate the quality of this specimen, but it is really fine and might well even contain the even rarer related, and similar-looking species, Bettertonite and Penberthycroftite.