Figure 4From: A demonstration of an affinity between pyrite and organic matter in a hydrothermal settingPyrite crystals coated with organic matter. A) Backscattered SEM micrographs of pyrite crystals coated with organic matter in hydrothermal calcite veins from Mullaghwornia. The pyrite crystals appear white, the organic matter is black, and the calcite is grey. B) ED X-ray maps for sulphur (green) and carbon (red), with corresponding micrograph of pyrite and carbon.Back to article page