Sentence Examples

  • They are four important iron ores, magnetite, haematite, limonite and siderite, and one of less but still considerable importance, pyrite or pyrites.
  • Siderite, or spathic iron ore, FeCO 3, crystallizes in the rhombohedral system and contains 48.28% of iron.
  • The clayey siderite of the British coal measures is called " clay band," and that containing bituminous matter is called " black band."
  • The most important British ore deposit is the Lower Cleveland bed of oolitic siderite in the Middle Lias, near Middlesborough.
  • In Austria-Hungary, besides the famous Styrian Erzberg, with its siderite ore bed about 450 ft.