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Uploaded on:
17/03/2009 19:46:05
Type:
Digital Asset
File Size:
119.82 KB
Dimensions:
775 x 1000 pixels
135 views 0 downloads
P number: P519609
Caption: Specimen of roofing slate from Westmorland, England
Description: A typical grey-green Westmorland slate, showing the trade mark stamp of the Elterwater Green Slate Company Limited of Ambleside. British Geological Survey Petrology Collection sample number EMC 5783. The slate is dressed in a 'shouldered' style, with two nail-holes typical of the English and Welsh slate quarries. The Elterwater company marketed their product as 'Seagreen Slates'. The presence of pyrite on Scots slates has been used to criticize the quality, as pyrite as a mineral can under some conditions be unstable. However in practice, there is little evidence for this, and the durability of Scots slates is proven by the fact that they have performed on Scottish roofs in our climate for hundreds of years. Specimen size: 26x15cm.
Date taken: 01/01/2003
Photographer: Bain, T.S.
Copyright statement: NERC
Orientation: Portrait
Size: 119.82 KB; 775 x 1000 pixels; 66 x 85 mm (print at 300 DPI); 205 x 265 mm (screen at 96 DPI);
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