...granite of a light gray, slightly bluish color and very fine to fine texture, with feldspars up to 0.15 inch and mica to 0.1 inch. Its constituents, in descending order of abundance, are: Colorless, clear potash feldspar (microcline and orthoclase, the latter with hairlike crystals probably...

...granite of a light gray, slightly bluish color and very fine to fine texture, with feldspars up to 0.15 inch and mica to 0.1 inch. Its constituents, in descending order of abundance, are: Colorless, clear potash feldspar (microcline and orthoclase, the latter with hairlike crystals probably...

...granite of a light gray, slightly bluish color and very fine to fine texture, with feldspars up to 0.15 inch and mica to 0.1 inch. Its constituents, in descending order of abundance, are: Colorless, clear potash feldspar (microcline and orthoclase, the latter with hairlike crystals probably...

...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),...

..."Woodbury gray," is a biotite granite of medium gray shade and medium texture with feldspar up to 0.3 inch and mica to 0.1 inch.. Its constituents, in descending order of abundance, are: Clear to bluish translucent potash feldspar (microcline and orthoclase) somewhat kaolinized; light...

...slightly bluish-gray color and of medium inclining to fine, even-grained texture with feldspars up to 0.25 and mica to 0.1 inch. Its constituents, in descending order of abundance, are: Clear to translucent potash feldspar (microcline, with inclusions of the other constituents, and also...

...faint I y 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...

...light inclining to medium bluish-gray color and of even-grained fine texture, with feldspars under 0.2 inch and mica to 0.1 inch. Its constituents, in descending order of abundance, re: Clear bluish potash feldspar (microcline, generally in twins, inter47286°— Bull. 430—10 23...

...shade and of even-grained medium inclining to coarse texture, with feldspars up to 0.5 inch and mica up to 0.1 inch. Its constituents, in descending order of abundance, are very light gray to pale cream-colored microperthite (potash feldspar (microcline and orthoclase), somewhat kaolinized,...

...shade and of even-grained medium inclining to coarse texture, with feldspars up to 0.5 inch and mica up to 0.1 inch. Its constituents, in descending order of abundance, are very light gray to pale cream-colored microperthite (potash feldspar (microcline and orthoclase), somewhat kaolinized,...