Abstract
A Fine set of loose crystals of felspar from Mt. Erebus was collected by Mr. F. Debenham on the British Antarctic (‘Terra Nova’) Expedition in 1910, and was acquired by the British Museum (Natural History) with the collection of rocks obtained on that voyage. These crystals are found in great profusion on the crater slopes, and their occurrence has been briefly described by David and Priestley, who referred to them as anorthoclase. On ascending the inclined floor of the second crater they saw ‘that the covering of snow became thinner until it almost entirely disappeared, being replaced by a surface formed of crystals of anorthoclase felspar from half an inch to four inches in length’.
Published Version
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