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High Down Quarry is the type locality for the aluminium phopshate wavellite. It was discovered there by John Hill in the late eighteenth century and named for William Wavell a local physician and #mineral collector. (photo by Crazy Dave Green on Flickr)
Faerie Magic in Minerals. (Aluminium phosphate wavellite, High Down Quarry, Filleigh, North Devon, England. Discovered by John Hill late 18th c and named for William Wavell, a local physician and mineral collector.) // photo by Dave Green
Osmium twinning / Osmium is a hard, brittle, blue-gray or blue-black transition metal in the platinum family and is the densest naturally occurring element, with a density of 22.59 g/cm3 (slightly greater than that of iridium and twice that of lead).
L’inchiostro ormai da tempo inutilizzato, aveva formato cristalli che ostruivano la fuoriuscita di un segno fluido che rallegrasse la pagina almeno con il suo colore. The ink had been long unused: so it had formed crystals that blocked the escape of fluid a sign that cheered the page at least with its color.