Eric Walker added Siderite - Wikipedia to Siderite

Eric Walker added Collections: Iron, How Did They Make It? Part I, Mining – A Collection of Unmitigated Pedantry to a number of topics

Eric Walker added Collections: Iron, How Did They Make It? Part I, Mining – A Collection of Unmitigated Pedantry and Siderite - Wikipedia to Siderite, and added Siderite to Iron ores

Eric Walker added Siderite, Limonite and Bog iron and Collections: Iron, How Did They Make It? Part I, Mining – A Collection of Unmitigated Pedantry and China's reliance on Australian iron ore is a 'strategic weakness' for Xi Jinping, expert says - ABC News to Iron ores, and added Iron ores to Mines and mining and Iron