 Much of the ore is siliceous, silica occuring principally as embedded chert and sometimes in the form of sand; but the percentage of siliceous material varies largely, portions of the ore being almost free from it, while the amount in other portions runs...  The Resources of Tennessee - Page 128by Tennessee. Division of Geology - 1916Full view - About this book
 | Frank L. Nason - Geological surveys - 1892 - 434 pages
...boulders are six feet in diameter. The ore is siliceous, silica occurring principally as chert fragments; but the percentage of siliceous material varies largely, portions of the ore being almost free from any silica, while the amount in other portions runs very high. The northern end of the deposit seems,... | |
 | Geology - 1919 - 546 pages
...comparatively little water-worn gravel was noticed. "Much of the ore is siliceous, silica occuring principally as embedded chert and sometimes in the...most of it being of the solid chunk variety. Some limonite cemented sandstone was observed. A representative sample taken from the dumps analyzed 40.73... | |
 | 1921 - 376 pages
...comparatively little water-worn gravel was noticed. "Much of the ore is siliceous, silica occuring principally as embedded chert and sometimes in the...most of it being of the solid chunk variety. Some limonite cemented sandstone was observed. A representative sample taken from the dumps analyzed 40.73... | |
 | Missouri. Bureau of Geology and Mines - Paleontology - 1892 - 444 pages
...boulders are six feet in diameter. The pre is siliceous, silica occurring principally as chert fragments; but the percentage of siliceous material varies largely, portions of the ore being almost free from any silica, while the amount in other portions runs very high. The northern end of the deposit seems... | |
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