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Hydrothermal Alteration in the Carrock Fell Area, Cumberland, England

Published online by Cambridge University Press:  01 May 2009

A. Ewart
A. Ewart
Affiliation:
Dept. of Mining Geology, Imperial College, London
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Abstract

Within this area are developed a series of quartz veins which cut three rock types, the Grainsgill granite, part of the southern margin of the Carrock Fell gabbro to the north, and an intervening area of hornfels belonging to the Skiddaw Slate Series. Both the hornfels and the gabbro have suffered thermal metamorphism due to the granite, and in addition, the hornfels has undergone a very localized metamorphism due to the gabbro. All three rock types have undergone a further hydrothermal alteration due to the quartz veins. The microscopic changes involved in this alteration are described and it is shown that the end product in each case is essentially similar to a greisen, with the addition of pyrite and arsenopyrite.

Type
Articles
Information
Geological Magazine , Volume 99 , Issue 1 , February 1962 , pp. 1 - 8
Copyright
Copyright © Cambridge University Press 1962

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References

REFERENCES

Butler, B. S., 1932. Influence of a replaced rock on replacement minerals associated with ore deposits. Econ. Geol., 27, 1–24.CrossRefGoogle Scholar
Ewart, A., 1957. The Carrock Fell wolfram deposit. Unpublished thesis, Royal School of Mines, London.Google Scholar
Finlayson, A. M., 1910. The ore-bearing pegmatites of Carrock Fell. Geol. Mag., dec. v, 7, 19–28.CrossRefGoogle Scholar
Green, J. F. N., 1918. The Skiddaw granite—a structural study. Proc. Geol. Ass. Lond., 29, 126–136.CrossRefGoogle Scholar
Harker, A., 1894. Carrock Fell: A study in the variation of igneous rock masses—Part I. The gabbro. Quart. J. geol. Soc. Lond., 50, 311–337.CrossRefGoogle Scholar
Harker, A., 1895. Carrock Fell: A study in the variation of igneous rock masses— Part II. The Carrock Fell granophyre. Part III. The Grainsgill greisen. Quart. J. geol. Soc. Lond., 51, 125–148.CrossRefGoogle Scholar
Hitchen, C. S., 1934. The Skiddaw granite and its residual products. Quart. J. geol. Soc. Lond., 90, 158–199.Google Scholar
Hollingworth, S. E., 1938. Carrock Fell and adjoining areas. Proc. Yorks. Geol. Soc., 23, 208–218.CrossRefGoogle Scholar
Kingsbury, A. W. G., and Hartley, J., 1955. On the occurrence of the rare copper molybdate, lindgrendite, at Brandy Gill, Carrock Fell, Cumberland. Miner. Mag., 30, 723–726.Google Scholar
Kingsbury, A. W. G., 1956 a. New occurrence of vanadium minerals (mottramite, descloizite, and vanadinite) in the Caldbeck area of Cumberland. Miner. Mag., 31, 289–298.Google Scholar
Kingsbury, A. W. G., 1956 b. Cosalite and other lead sulpho-salts at Grainsgill, Carrock Fell. Miner. Mag., 31, 296–300.Google Scholar
Kingsbury, A. W. G., 1960. Carminite and beudantite from the northern part of the Lake District and from Cornwall. Miner. Mag., 32, 423–432.Google Scholar
Melmore, S., 1920. The metamorphism of the Carrock Fell gabbro; with a note on the origin of the sulphide veins of the Caldbeck Fells. Geol. Mag., 57, 266–268.CrossRefGoogle Scholar
Rastall, R. H., 1910. The Skiddaw granite and its metamorphism. Quart. J. geol. Soc., Lond., 66, 116–140.CrossRefGoogle Scholar
Rastall, R. H., 1942. Ore deposits of Skiddaw. Proc. Yorks. Geol. Soc., 24, 328–343.CrossRefGoogle Scholar
Scrivener, J. B., 1916. The Grainsgill greisen of Carrock Fell. Geol. Mag., dec. vi, 3, 239–240.CrossRefGoogle Scholar
Thimmaiah, T., 1956. Mineralization of the Caldbeck Fells area, Cumberland. Ph.D. thesis, University of London.Google Scholar
Ward, J. C., 1876. The geology of the northern part of the English Lake District. Mem. geol. Surv. U.K.Google Scholar