| Description |
ix, 101 leaves : illustrations, photographs ; 29 cm |
| Summary |
"Pyrite (FeS₂), cattierite (CoS₂), and various transitional members of the solid solution compounds were prepared. The methods used are as follows: First, sulfides of cobalt, iron, or cobalt-iron were obtained by precipitation from a mixture of the cobalt chloride and/or ferrous sulfate in an aqueous solution. The dried precipitates were then mixed with an equal weight amount of sulfur and placed into silica glass tubes. After evacuation, they were filled with hydrogen gas of 3/4 of atmospheric pressure and sealed. The samples were then heated up to 500°C (for FeS₂), 650°C (for FeS₂-CoS₂), and 750°C (for CoS₂) for 24 to 72 hours. Pyrite, solid solutions of FeS₂-CoS₂, and cattierite were then formed."--Abstract, leaf ii. |
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