Figure 4-2. Typical horizontal-grinding laps. 



proper thickness. The various special treatments required depend on the lithol- 

 ogy of the cuttings. 



THIN-SECTION STUDY Most subsurface studies with the polarizing 



microscope involve examination of texture as 

 well as composition, and they require thin sections from either cores or cuttings. 

 The desired information, however, may often be obtained by using the oil-im- 

 mersion method of mineral identification described in the final section of this 

 chapter. 



62 



