Sandstone, shale and clay: minerals, ores and what a city can dig

Sand, mud and clay laid down by rivers, deltas and seas, then pressed into stone: the bedrock of plains, often with coal in it. Under a city, Sandstone, shale and clay holds 24 minerals of the Crystal encyclopedia and the ores of iron, copper, silver, lead, zinc.

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Metals and their ores

• Iron from Hematite, Goethite, Siderite, Limonite
• Copper from Copper, Bornite
• Silver from Galena
• Lead from Galena
• Zinc from Sphalerite

What a city can dig

Iron, Copper and bronze, Lead, Silver, Building stone, Coal, Clay and bricks

Coal seams lie in these rocks: a world that knows how to burn coal heats and forges without woods.

Minerals

Quartz, Emerald, Pyrite, Gypsum, Hematite, Copper, Galena, Opal, Amber, Sphalerite, Tiger's Eye, Barite, Jet, Vivianite, Goethite, Marcasite, Siderite, Jasper, Limonite, Bornite, Manganite, Carnotite, Patronite, Ironstone

Offered first on: plain, hill, oasis

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