Fig. 2), the raw material quarried for scythestones is a fine-grained, thinly laminated, micaceous sandstone, whose quartz grains occur in definite layers, separated by thin layers of mica flakes. Economic Geology - Page 287by Heinrich Ries - 1910 - 856 pagesFull view - About this book
| United States. Bureau of Mines - Digital images - 1909 - 908 pages
...northwestern part of New Hampshire, near Connecticut River. The raw material from which the stones are made is a fine-grained, thinly laminated, micaceous sandstone,...definite layers separated by thin layers of mica flakes. Associated with this material occurs rock in which the quartz particles occur in rather coarser grains... | |
| Heinrich Ries - 1916 - 1358 pages
...schistose rock in Graf ton County, New Hampshire, and Orleans County, Vermont. At Pike Station, NH (PI. XXVI, Fig. 2), the raw material quarried for scythestones...represents a unique type, much prized for high-grade ECONOMIC GEOLOGY oilstones for sharpening small tools, and in demand both at home and abroad. It is... | |
| Raymond Bardeen Ladoo - Mines and mineral resources - 1925 - 704 pages
...part of New Hampshire, near the Connecticut River. The raw material from which the stones are made is a fine-grained, thinly laminated, micaceous sandstone,...definite layers separated by thin layers of mica flakes. . . . Where the quartz grams become coarse and irregularly disposed and where argillaceous material... | |
| Canada. Mines Branch (1950- ) - 1927 - 150 pages
...laminated mica schists are quarried by the Pike Company at Pike, Grafton county, New Hampshire. The quartz grains occur in definite layers separated by thin layers of mica. That part of the rock containing coarse, irregularly scattered quartz and argillaceous matter is discarded.... | |
| United States - 1911 - 952 pages
...northwestern part of New Hampshire, near Connecticut River. The raw material from which the stones are made is a fine-grained, thinly laminated, micaceous sandstone,...definite layers separated by thin layers of mica flakes. Associated with this material is rock in which the quartz articles occur in coarser grains and in lenses... | |
| United States Tariff Commission - Tariff - 1921 - 634 pages
...and Michigan are the important producers of scythestones. The stone used in New Hampshire is a nnely laminated micaceous sandstone, whose quartz grains...definite layers separated by thin layers of mica. The rock is mined during the summer and piled until winter, when it is ground into shape. (a) Corundum... | |
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