Geochemical analysis method DIFF

Preparation

The concentration of organic carbon was calculated by subtracting the amount of inorganic (carbonate) carbon (determined from the mineralogical data for the carbonate minerals calcite, dolomite, and aragonite) from the total carbon concentration.

Database fields pertinent to DIFF

organic carbon

Mineral:	organic carbon
Units:	wt. %
Description:	Organic carbon (C) concentration, in percent by weight (wt.%), reported as the difference between measured total carbon (Tot) and inorganic carbon (Inorg). Precision of one decimal place if inorganic carbon is reported, two decimal places otherwise.