The Nature of Some Bituminous Sands from Moffat County, Colorado

Abstract

Humic acid is a possible cause of the staining found in many sands has been seemingly overlooked in the past. It is a definite cause, and very probably to a much greater extent than realized. Two samples from the Browns Park Formation appear naturally brown in color, but are in reality near white. The brown color is a result of staining due mostly to humic acid and to a lesser extent by a small amount of petroleum present

    Similar works