Peacock Coal

Image shows a sample of peacock coal against a rock background

Detailed Description

This sample is of peacock coal. Peacock coal is not a specific class of coal, but rather the name for an effect in which oxidizing materials in the coal create a dazzling array of colors on the surface of the coal. Usually it is short-lived, as the material fully oxidizes away shortly after exposed to air. Read more about our coal research here: https://www.usgs.gov/centers/cersc/science/us-coal-resources-and-reserves-assessment

Details

Image Dimensions: 3008 x 2000

Date Taken:

Location Taken: Reston, VA, US