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Page 151:-
called sienite, forms the two inferior mountain ridges, called Irton Fell and Muncaster Fell; it extends to some distance on both sides of the river Esk, and may be seen shooting up in places, almost as far as Bootle, and also at Wasdale Head. At Nether-wasdale it becomes a finer grained sienite, in which form it extends through the mountains quite across Ennerdale, as far as Scale Force, and to the side of Buttermere Lake. It contains veins of red hematite and micaceous iron ore. Another variety of granite with reddish felspar in large crystals, is found on Shap Fells, and may be observed in situ on the road side near Wasdale Bridge, about four miles south of Shap.
Carrock Fell consists of a rock generally referred to the class of sienite, varying its appearance in different parts of the mountain. It contains (besides the usual ingredients of quartz and felspar) hypersthene and magnetic or titaniferous iron ore in various proportions. Near this a considerable quantity of lead ore and some copper has been procured: the lead is smelted and refined hard by, and yields a good portion of silver.
A reddish porphyritic rock occurs on both sides of St. John's Vale, from two to three miles east of Keswick; and a vein or dyke apparently related to the same, but far more beautiful, (being composed of crystals of quartz and bright red felspar, imbedded in a brownish red compact felspar,) is found on Armboth Fell, six miles S.S.E. of Keswick.
gazetteer links
button -- Armboth Fell
button -- "Buttermere Lake" -- Buttermere
button -- Carrock Fell Mines
button -- Carrock Fell
button -- Ennerdale
button -- Esk, River
button -- Irton Fell
button -- Muncaster Fell
button -- Nether Wasdale
button -- Scale Force
button -- Shap Fells
button -- St John's in the Vale
button -- Wasdale Head
button -- "Wasdale Bridge" -- Wasdale Old Bridge
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