(Table 1, page 605) Chemistry of concretions from Grand Lake (GL) and Ship Ha...

Studies by optical microscopy, x-ray diffraction, and electron probe techniques of ferromanganese concretions from three Canadian lakes reveal chemical banding of amorphous...采用光学显微镜（optical microscopy）、X射线衍射（X-ray diffraction）及电子探针技术，对加拿大三个湖泊中的铁锰结核（ferromanganese concretions）开展的研究显示，该类结核呈现出非晶态物质的化学条带……