A thin section of the typical ore when examined under the microscope shows quartz as the most abundant mineral with sharply bounded . . . [sericite] aggregates, which . . . represent altered feldspar grains and abundant brown biotite. Associated with... The Adirondack Graphite Deposits - Page 78by Harold Lattimore Alling - 1918 - 144 pagesFull view - About this book
| United States. Bureau of Mines - Digital images - 1911 - 954 pages
...graphite, which according to an analysis made in the laboratory of the United States Geological Survey,6 constitutes 5.29 per cent of the rock. The sample...analyzed was a composite one collected by the writer from various parts of the quarry and probably approaches « Ornpliltp : Mineral Resources, US, for... | |
| Science - 1918 - 878 pages
...all of the rock exposed is more or less graphitic." The ore is the characteristic quartz- feldspar schist, readily cleavable, " which is more uniform...and certain bands parallel to the schistosity are very 1 Bastin, ES, Mineral Resources, USGB, 1909, 2: 823. 1 Bastin, ES, ibid. » Newland, DH, NY State... | |
| 1918 - 686 pages
...regular and averages N 80° W. The dip is about 30° south. A thickness of 25 feet ... is exposed."1 " The graphite forms very fine, thin scales coating...and certain bands parallel to the schistosity are very 1 Bastin, ES, Mineral Resources, USGS, 1909, 2: 8zv 2 Bastin, ES, ibid. Tewland, DH, NY State... | |
| United States - 1911 - 952 pages
...graphite, which according to an analysis made in the laboratory of the United States Geological Survey,6 constitutes 5.29 per cent of the rock. The sample...analyzed was a composite one collected by the writer from various parts of the quarry and probably approaches • Graphite : Mineral Resources, US, for... | |
| Mineral industries - 1914 - 806 pages
...graphite, which according to an analysis made in the laboratory of the United States Geological Survey,1 constitutes 5.29 per cent of the rock. The sample...analyzed was a composite one collected by the writer from various parts of the quarry and probably approaches closely the average run of the mine. Some... | |
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