On the occurrence of chondrodite in the Glenelg limestone of Inverness-shire

Abstract
Introduction.-There are many old records of the occurrence of chondrodite in the British Isles. Greg and Lettsom mentioned Co. Donegal in Ireland and near Loch Ness in Scotland. J.H. Collins gave Wheal Druid, Redruth, and also Scotland and Ireland. The mineral is included in a list of those associated with the kyanite of Glen Urquhart, Loch Ness, Inverness-shire, given by T. Wallace. Though reference to the Loch Ness locality is made by Dana in the 6th edition of the 'System' (1892, p. 540), the existence of chondrodite at Glen Urquhart, the only likely locality near Loch Ness, had been queried by M. F. Heddle so early as 1879. Heddle failed to find chondrodite at this locality; he gave the name xantholite to a yellowish serpentinous substance that he suggested had been hitherto mistaken for chondrodite.

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