40d:Stone

Stone is the material that is left behind after Mining. Some mineable layers, however, do not leave behind stone. These fall into the Soil category.
Stone is divided into three key categories:

1. Metal ore: stone that produces metal bars when smelting.
2. Economic stone: coal and stone that is used as a flux or has other desirable features.
3. Other stone: stone that is used for structures and has no special features other than color.

Metal ores

Stone name	Found in	Found how	Ore	Value
Aluminum	All Igneous Extrusive	Small clusters	Aluminum	40
Bismuthinite	Granite	Small clusters	Bismuth	1
Copper nuggets	All Igneous Extrusive, Sandstone	Veins	Copper	2
Malachite	Limestone, Marble	Veins	Copper	2
Tetrahedrite	All Stone	Veins	Copper, Silver	3
Gold	All Igneous All Alluvial	Veins	Gold	30
Hematite	All Sedimentary, All Igneous Extrusive	Veins	Iron	8
Limonite	All Sedimentary	Veins	Iron	8
Magnetite	All Sedimentary	Large clusters	Iron	8
Galena	All Igneous Extrusive, All Metamorphic, Granite, Limestone	Veins	Lead, Silver	5
Garnierite	Gabbro	Veins	Nickel	2
Platinum nuggets	All Alluvial, Olivine, Magnetite, Chromite	Small clusters	Platinum	40
Horn Silver	Silver	Small clusters	Silver	10
Silver nuggets	Granite, Gneiss	Veins	Silver	10
Cassiterite	All Alluvial, Granite	Veins	Tin	2
Sphalerite	All Metamorphic	Veins	Zinc	2

Economic stones

Economic stone is a designation for stones that have special uses as ores, fuel, or flux or other uses as far as making special items is concerned. You can use the z : Stone menu to un-restrict them.

The Stone menu will also show what each stone can be used for--very useful for figuring out what you need to mine more of to make that obscure metal your noble is whining about.

Stone name	Found in	Found how	Use	Value
Calcite	Limestone, Marble	Small clusters	Flux	1
Limestone	Sedimentary Layer	Full Layers	Flux	2
Dolomite	Sedimentary Layer	Full Layers	Flux	1
Chalk	Sedimentary Layer	Full Layers	Flux	2
Marble	Metamorphic Layer	Full Layers	Flux	1
Lignite	All Sedimentary	Veins	2 Coke	1
Bituminous coal	All Sedimentary	Veins	3 Coke	1

Other Stone Full Layers

All other stones have value 1, except obsidian, which has a value of 3.

Stone name	Layer type	Icons
Sandstone	Sedimentary Layer	# ●
Siltstone	Sedimentary Layer	% ●
Mudstone	Sedimentary Layer	≈ ●
Shale	Sedimentary Layer	. ●
Claystone	Sedimentary Layer	, ●
Rock salt	Sedimentary Layer	# ●
Conglomerate	Sedimentary Layer	∞ ●
Flint	Sedimentary Layer	▓ ●
Chert	Sedimentary Layer	= ●
Quartzite	Metamorphic Layer	- ●
Slate	Metamorphic Layer	% ●
Phyllite	Metamorphic Layer	- ●
Schist	Metamorphic Layer	` ●
Gneiss	Metamorphic Layer	= ●
Granite	Igneous Intrusive Layer	▓ ●
Diorite	Igneous Intrusive Layer	░ ●
Gabbro	Igneous Intrusive Layer	▒ ●
Rhyolite	Igneous Extrusive Layer	, ●
Basalt	Igneous Extrusive Layer	# ●
Andesite	Igneous Extrusive Layer	∞ ●
Felsite	Igneous Extrusive Layer	. ●
Obsidian	Igneous Extrusive Layer	▒ ●

Other Stone

Stone name	Found in	Found how
Alabaster	Gypsum	Small clusters
Alunite	All Igneous Extrusive, Kaolinite	Large clusters
Anhydrite	Gypsum, Satinspar, Alabaster, Selenite	Single
Bauxite	All Sedimentary	Large clusters
Borax	Gypsum, Rock_Salt	Small clusters
Brimstone	All Igneous Extrusive, Gypsum	Small clusters
Chromite	Olivine	Veins
Cinnabar	All Igneous Extrusive, Shale, Quartzite	Veins
Cobaltite	All Igneous All Metamorphic	Veins
Cryolite	Granite	Small clusters
Graphite	Gneiss, Quartzite, Marble, Schist	Small clusters
Gypsum	All Sedimentary	Large clusters
Hornblende	All Igneous, All Metamorphic	Small clusters
Ilmenite	Gabbro	Small clusters
Jet	All Sedimentary	Large clusters
Kaolinite	All Sedimentary	Large clusters
Kimberlite	Gabbro	Veins
Marcasite	Kaolinite	Small clusters
Mica	All Metamorphic, Granite	Large clusters
Microcline	All All Stone	Large clusters
Olivine	Gabbro	Large clusters
Orpiment	All Igneous Extrusive	Small clusters
Orthoclase	All Igneous Intrusive, All Metamorphic	Large clusters
Periclase	Marble	Small clusters
Petrified wood	All Sedimentary	Small clusters
Pitchblende	Granite	Small clusters
Puddingstone	Conglomerate	Large clusters
Pyrolusite	All Igneous	Small clusters
Realgar	All Igneous Extrusive	Small clusters
Rutile	All Metamorphic, Granite	Small clusters
Saltpeter	All Sedimentary	Small clusters
Satinspar	Gypsum	Small clusters
Selenite	Gypsum	Small clusters
Serpentine	Olivine	Small clusters
Stibnite	All Igneous Extrusive	Small clusters
Sylvite	Rock salt	Large clusters
Talc	Dolomite	Large clusters