Ore

From DwarfFortressWiki

Ores are a type of stone that can be used to create metal bars and alloy bars at the smelter.

Metal ores with two possible metals listed below always create the first metal when smelting, but have a chance of creating the second metal as well. Different rules apply to creating alloys.

Note that in some cases ore value (given below) and metal value are not the same (Adamantine, Bismuth, Iron ores). Alloys, too, often have a higher value than the ores/metals they are made of.

Ore	Found in	Found how	Metal created	Value	Metal value
Raw adamantine	The depths	Veins	Adamantine	250	300
Native aluminum	All Igneous Extrusive	Small clusters	Aluminum	40	40
Bismuthinite	Granite	Small clusters	Bismuth	1	2
Copper nuggets	All Igneous Extrusive, Sandstone	Veins	Copper	2	2
Malachite	Limestone, Marble	Veins	Copper	2	2
Tetrahedrite	All Stone	Veins	Copper, Silver (20%)	3	2 (10)
Gold nuggets	All Igneous All Alluvial	Veins	Gold	30	30
Hematite	All Sedimentary, All Igneous extrusive	Veins	Iron	8	10
Limonite	All Sedimentary	Veins	Iron	8	10
Magnetite	All Sedimentary	Large clusters	Iron	8	10
Galena	All Igneous extrusive, All Metamorphic, Granite, Limestone	Veins	Lead, Silver (50%)	5	2 (10)
Garnierite	Gabbro	Veins	Nickel	2	2
Platinum nuggets	All Alluvial, Olivine, Magnetite, Chromite	Small clusters	Platinum	40	40
Horn silver	Native silver	Small clusters	Silver	10	10
Silver nuggets	Granite, Gneiss	Veins	Silver	10	10
Cassiterite	All Alluvial, Granite	Veins	Tin	2	2
Sphalerite	All Metamorphic	Veins	Zinc	2	2