Special Reports on the Mineral Resources of Great Britain, Vol. 25

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Excerpt from Special Reports on the Mineral Resources of Great Britain, Vol. 25: Lead and Zinc Ores of Northumberland and Alston Moor Of the two great rock groups in which -the veins are found, the Millstone Grit is the most constant in character. This great assemblage of arenaceous deposits covers immense areas in northern Derbyshire, in Yorkshire and Lancashire, but rapidly dwindles further north, along the western margin of the Newcastle Coalfield. In certain parts of West Yorkshire (pateley Bridge and Grassington), the Grits are traversed by highly productive veins, but elsewhere the formation is poorly mineralised, behaving as a Farewell Rock to the lead miner almost as much as to the collier. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.