Wilbert Smith Archives Files Box 1131 19 1131-19-p260

Document Text (OCR)

1) major constituent: quartz, 2) large minor constituent: spinel-type compound, close to magnetite, Fe,0,, 3) small minor constituent: goethite, a-Fe,0,.H,0, 4) trace constituent: lepidocrocite, Y-Fe,0,.H,0. Neither X-ray diffraction pattern showed Passe indication of any other crystalline constituents, or of any amorphous material. The results of the semi-quantitative spectrog raphic ‘analysis are as foliows:- Fe a PC, Mn = 6, Si = 2, Ni = 0.6, Cr = 0.3, Cu = 0.2, W ee Sn = 0.1, Al = 0.1, Go =...