 | Thomas Nelson Dale - 1908 - 250 Seiten
...grained, with feldspars up to 0.15 inch, and black mica in slender scales but exceptionally over 0:1 inch. Its constituents, in descending order of abundance, are: Very light smoky quartz with hairlike crystals, probably of rutile, and cavities in sheets; colorless clear to milk-white soda-lime... | |
 | Thomas Nelson Dale - 1908 - 458 Seiten
...even grained, fine, with feldspar and mica up to 0.1 inch, but with rare porphyritic feldspars 0.2 inch. Its constituents, in descending order of abundance, are: Very light smoky quartz, some °f it with cavities up to 0.03 millimeter in sheets; milk-white sodalime feldspar (oligoclase)... | |
 | Geological Survey (U.S.) - 1908 - 1020 Seiten
...even grained, fine, with feldspar and mica up to 0.1 inch, but with rare porphyritic feldspars 0.2 inch. Its constituents, in descending order of abundance, are: Very light smoky quartz, some of it with cavities up to 0.03 millimeter in sheets; milk-white sodalime feldspar (oligoclase),... | |
 | George Ferdinand Becker - 1909 - 286 Seiten
...Pine Mountain Granite Company. (See Perkins, GH, Mineral resources of Vermont, 1899-1900, p. 75.) what even-grained texture with feldspar up to 0.4 inch and mica to 0. 1 inch, but with sparse, clear, porphyritic feldspars, including all the other chief constituents. The stone... | |
 | Thomas Nelson Dale - 1909 - 158 Seiten
...of medium gray shade and medium, even-grained texture, with feldspars up to 0.4 inch and mica to 0.2 inch. Its constituents, in descending order of abundance, are: Very light smoky quartz with hair-like crystals of rutile and cavities in sheets in two rectangular directions and cracks parallel... | |
 | Charles Willard Hayes - 1910 - 764 Seiten
...faintly pinkish gray color, and of evengrained fine texture, with feldspars to 0.15 inch and micas to 0.1 inch. Its constituents, in descending order of abundance, are: Very light smoky quartz with cavities and hairlike crystals of rutile; milkwhite soda- lime feldspar (oligoclase), kaolinized and... | |
 | 1911 - 606 Seiten
...of fine gneissic texture, with feldspars under 0.2 inch, exceptionally up to 0.3 inch, and mica up to 0. 1 inch. Its constituents, in descending order of abundance, are milk-white soda-lime feldspar (oligoclase), some of it much kaolinized, some minutely intergrown with... | |
 | Geological Survey (U.S.) - 1911 - 608 Seiten
...of fine gneissic texture, with feldspars under 0.2 inch, exceptionally up to 0.3 inch, and mica up to 0. 1 inch. Its constituents, in descending order of abundance, are milk-white soda-lime feldspar (oligoclase), some of it much kaolinized, some minutely intergrown with... | |
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... inch. Its constituents, in descending order of abundance, are: Very light smoky quartz... 