INDEX 



205 



Schreibersite — Continued. 



identification of, 9, 99, 100. 



in hexahedrites, 4, 19, 52, 53, 63. 



in octahedrites, 5, 19-21. 



interpretation of, 8, 9, 18-20. 



iron-nickle in, 20. 



needles of, 8, 13, 18, 19, 53, 63, 

 87, 92. 



phosphide in, 18-20, 77, 78. 



properties of, 19, 91. 



rhabdites of, 18. 



role in eutectics. 20, 21, 59, 72, 77, 

 79, 80, 82. 



sheen caused by, 11. 



tests for, 20, 77, 95, 103, 105. 

 Scottsville^ meteorite, 89, 115, 124. 

 Seelasgeni meteorite, 21. 36, 66, 69, 115. 



128, 158, 165, 166. 

 Seneca Township ^ meteorite, 18, 61, 74, 



93, 115, 168, 187, 189, 190, 193. 

 Sheen, effect on atomic planes of, 12, 14. 



in hexahedrites, 11, 53. 



in kamacite, 3, 11, 12, 94. 



in octahedrites. 11, 16. 



oriented, 11-13. 



phosphorus in, 12. 

 Shingle Springs ^ meteorite, 7, 115, 137, 



145, 171. 

 Siderites, 4, 7, 25. 

 Siderolites, 4. 

 Sierra de la Ternera meteorite. (See 



Ternera meteorite.) 

 Sierra Gorda ^ meteorite, 17, 54, 115, 



172, 198. 

 Silicates, 25. 

 Siratik * meteorite, 7. 

 Slip bands, 89. 



Smithland^ meteorite, 51, 115, 146. 

 Smith's Mountain! meteorite, 60, 61, 



66, 115, 156, 158, 161, 170, 189. 

 Smith ville* meteorite, 21. 

 Social Circle' meteorite, 75, 115, 194. 

 Solutions, solid, 28. 

 Soper* meteorite, 50, 79, 80, 115, 131. 

 Sorbite, 35, 36, 39, 84. 

 Spheroidization of taenite, 69, 70. 

 Spindles. (See Needles.'i 

 Staunton i meteorite, 115, 123. 

 Steadite, 82, 84, 85. 



Steel. (See also Iron, artificial; Iron- 

 carbon alloys.) 



eutectoid, 34, 118. 



hypereutectoid, 34, 35, 46, 119. 



hypoeutectoid, 33, 46, 118. 

 Stone. (See Aerolites, Siderolites.) 

 Structures, interpretation, 8. 

 Study methods. (See Techniques, 



metallographic.) 

 Sulphur, 83. (See also Ferrous sul- 

 phide; Troilite.) 

 Sulphur prints, 18, 21, 94, 95, 103. 



' Octahedrite. 

 ' Ataxit€, nickel-rich. 

 5 Hexahedrite. 

 I, * Ataxite, nickel -poor. 



Taenite, alteration by heating, 70, 71, 

 74, 75. 



clear, 55, 61, 62, 68. 



composition of, 5, 14-16, 39, 46, 47, 

 55, 78. 



definition of, 5, 14, 15. 



hardness of, 14. 



in hexahedrites, 17, 53, 54. 



in nickel-rich ataxites, 67, 70. 



in octahedrites, 5, 6, 14, 15, 17, 

 36, 39, 44, 45, 47, 49, 55, 56. 

 61, 62, 67. 



in phase changes, 36. 



in plessite, 15, 47, 69. 



in structural changes, 46, 47. 



in trias, 47. 



iron-nickel in, 39. 



nickel in, 15, 38, 39, 46, 47, 103. 



phosphide in, 15, 78. 



phosphorus-poor, 81. 



properties of, 14. 



saturation in kamacite of, 37, 39, 

 46, 47, 67, 69-71. 



spheroidized, 69, 70. 



spotted, 15, 55, 56, 61, 67, 70. 



tests for, 14, 105. 



transformation of, 15. 

 Taenite bands, 62. 

 Taenite lamellae, deformation of, 92. 

 Taenite needles, 8, 15. 

 Tamarugal ' meteorite, 92. 

 Tazewell 1 meteorite, 10, 115, 134. 

 Techniques, metallographic, 93. 



acid tests, 18. 



etching, effect on fine structures, 

 101. 



etching for carbides, 24, 99-101. 



etching for eutectoid structures, 3, 

 77. 



etching for fine structures, 2. 



etching for phosphide, 99, 101. 



etching for schreibersite, 20, 77. 



etching, reagents used in, 95, 97- 

 101. 



hardness tests, 103. 



heat tinting, 103. 



macroetching, 2, 95. 



macroexamination, 2, 94. 



macro-observation, 95. 



m.icroetching, 12, 13, 15, 16, 95, 

 97, 98, 100. 



microe.xamination, 2, 3, 101. 



micropolishing, 23, 96, 101. 



miscellaneous techniques, 103. 



nickel coloration, 103. 



photography, 93, 95, 102. 



polarized light, 104. 



selection of study specimens, 93. 



spectroscopic analysis, 93, 104. 



sulphur printing, 18, 21, 94, 95, 103. 



used in preserving specimens, 95, 

 101. 



X-ray analysis, 59, 93, 104, 105. 



