On Chlormanganokalite a new Vesuvian mineral : with notes on some of the associated minerals

Abstract
In ‘Nature’ of May 31, 1906, the senior author gave a preliminary account of a new Vesuvian mineral, which he had found amongst the products of the eruption of April 1906, and for which he proposed tile name chlormanganokalite. It was described as a hydrous chloride of manganese and potassium, occurring as deliquescent crystals apparently rhombohedral in form. A few days later, on June 5, 1906, Professor A. Laeroix described, before the French Academy of Sciences, a Vesuvian mineral which he thought must be identical with chlormanganokalite : he stated it to be an anhydrous chloride of manganese, potassium, and sodium, and he determined the deliquescent crystals to be monoclinic and psehdo-rhombohedral. In a later paper, Professor Lacroix rightly insists upon this identity.

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