... and the preceding exercise, and by a. reexamination of the specimens, answer the following questions, and others set by ... and the plagioclase How do the feldspar. Which kind has the fine parallel lines? two micas difier in color? _ . _ c . 37.
|Title||:||A Laboratory Manual for Physical and Commercial Geography|
|Author||:||Ralph Stockman Tarr, Oscar Diedrich Engeln|