Subject ASC0003u6h
The geological magazine, or, Monthly journal of geology.
n.s. decade 4, v. 7 (1900), Page 274 (1900)
Smithsonian Libraries
BHL Page 30762441
Keywords
Acid intermediate basic ultra basic vertical scale percentage diagram Fig 2 Igneous rock chemical composittion igneous rock composition igneous rock igneous rock mineral composition bar graph rain scale table chart acidity ph graph acid base pH silica chemical percentages