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Difference between revisions of "40d:Stone"

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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. 
+
{{av}}
−
<br>
+
{{Quality|Masterwork}}
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Stone is divided into three key categories:
+
''(For the beginning player, see also [[The Non-Dwarf's Guide to Rock]])''
−
# [[Metal ore]]: stone that produces metal bars when [[Smelter|smelting]].
+
----
−
# [[Economic stone]]: [[coal]] and stone that is used as a [[flux]] or has other desirable features.
 
−
# Other stone: stone that is used for structures and has no special features other than color.
 
  
−
== Metal ores ==
 
  
−
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 {{K|z}}&nbsp;:&nbsp;<tt>Stone</tt> menu to un-restrict them.
+
'''Stone''' or '''rock''' is a naturally occurring solid aggregate of minerals. It sometimes [[stone management|leaves behind]] material after being mined or [[cave in|collapsing]]. Other types of [[Mining|minable]] tiles include [[soil]] and [[sand]].
  
−
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 is divided into a few key categories:
 +
* [[Metal ore]]: stone that produces [[metal|metal bars]] when [[Smelter|smelted]]
 +
* Rough [[gem|gems]]: rough gems can be [[gem cutting|cut]], then used to [[encrust]] objects and create [[window|windows]].
 +
* Other stone: Stone that is not an [[ore]] or a gem. Few of these have a use outside of items and structures. ([[Obsidian]] is one exception).
  
 +
[[Economic stone]]s are types of stone that can be reserved for a special purpose. For [[ore|ores]], this is smelting and for [[flux|fluxes]], this is steel production. [[Bituminous coal]] and [[lignite]] can be reserved for making [[coke]].
  
−
The economic stones are:
+
Having created loose stone, many times you'll want to get rid of it or at least move it someplace else. See [[stone management]] for advice.
  
−
{| class="wikitable"
+
''This article is about DF geology and the distribution of stones, and does not contain the specific locations of [[metal ore|metal ores]] or [[gem|gems]].''
 +
 
 +
== Main layer types ==
 +
{{main|Layer}}
 +
 
 +
There are four types of stone [[layer|layers]] (plus [[soil]], which is not stone). The type of layer is the primary indicator of what kind of [[ore|ores]] you are likely to find on the map, as well as a sign of [[volcano|volcanic]] activity.
 +
 
 +
The types are [[sedimentary layer|sedimentary layers]], [[igneous intrusive layer|igneous intrusive layers]], [[igneous extrusive layer|igneous extrusive layers]], and [[metamorphic layer|metamorphic layers]].
 +
 
 +
The primary types of rock only occur in their own layers. (e.g. you won't find [[limestone]] in a [[marble]] layer.)
 +
 
 +
== Stones forming entire layers ==
 +
These types of stone occur as entire layers, containing some [[cluster|veins and pockets]] of other minerals (see below). If one of the following types of stone is present on your map, it will be listed in one of the [[biome|biomes]] on the embark screen.<br /><br />
 +
{| border = 1 cellspacing="0" cellpadding="5" -valign="top"
 +
|-
 +
! style="background:#efefef;" | [[Sedimentary layer|Sedimentary]]
 +
! style="background:#efefef;" | [[Igneous intrusive layer|Igneous intrusive]]
 +
! style="background:#efefef;" | [[Igneous extrusive layer|Igneous extrusive]]
 +
! style="background:#efefef;" | [[Metamorphic layer|Metamorphic]]
 +
|-valign="top"
 +
|style="padding: 0"|
 +
* {{Raw Tile|░|7:7:1}} {{Raw Tile|•|7:1}} [[Chalk]]
 +
* {{Raw Tile|&#61;|6:7:0}} {{Raw Tile|•|6:0}} [[Chert]]
 +
* {{Raw Tile|,|0:7:1}} {{Raw Tile|•|0:1}} [[Claystone]]
 +
* {{Raw Tile|∞|6:7:0}} {{Raw Tile|•|6:0}} [[Conglomerate]]
 +
* {{Raw Tile|`|7:7:1}} {{Raw Tile|•|7:1}} [[Dolomite]]
 +
* {{Raw Tile|▓|0:7:1}} {{Raw Tile|•|0:1}} [[Flint]]
 +
* {{Raw Tile|▓|7:7:1}} {{Raw Tile|•|7:1}} [[Limestone]]
 +
* {{Raw Tile|≈|6:7:0}} {{Raw Tile|•|6:0}} [[Mudstone]]
 +
* {{Raw Tile|#|7:7:1}} {{Raw Tile|•|7:1}} [[Rock salt]]
 +
* {{Raw Tile|#|6:7:0}} {{Raw Tile|•|6:0}} [[Sandstone]]
 +
* {{Raw Tile|.|0:7:1}} {{Raw Tile|•|0:1}} [[Shale]]
 +
* {{Raw Tile|%|6:7:0}} {{Raw Tile|•|6:0}} [[Siltstone]]
 +
 
 +
|style="padding: 0"|
 +
* {{Raw Tile|░|0:7:1}} {{Raw Tile|•|0:1}} [[Diorite]]
 +
* {{Raw Tile|▒|0:7:1}} {{Raw Tile|•|0:1}} [[Gabbro]]
 +
* {{Raw Tile|▓|7:0:0}} {{Raw Tile|•|7:0}} [[Granite]]
 +
 
 +
|style="padding: 0"|
 +
* {{Raw Tile|∞|0:7:1}} {{Raw Tile|•|0:1}} [[Andesite]]*
 +
* {{Raw Tile|#|0:7:1}} {{Raw Tile|•|0:1}} [[Basalt]]*
 +
* {{Raw Tile|.|0:7:1}} {{Raw Tile|•|7:0}} [[Felsite]]*
 +
* {{Raw Tile|▒|0:7:1}} {{Raw Tile|•|0:1}} [[Obsidian]]
 +
* {{Raw Tile|,|0:7:1}} {{Raw Tile|•|0:1}} [[Rhyolite]]*
 +
 
 +
|style="padding: 0"|
 +
* {{Raw Tile|&#61;|7:7:1}} {{Raw Tile|•|7:0}} [[Gneiss]]
 +
* {{Raw Tile|▓|7:7:1}} {{Raw Tile|•|7:1}} [[Marble]]
 +
* {{Raw Tile|-|0:7:1}} {{Raw Tile|•|7:0}} [[Phyllite]]
 +
* {{Raw Tile|-|7:7:1}} {{Raw Tile|•|7:1}} [[Quartzite]]
 +
* {{Raw Tile|`|6:7:0}} {{Raw Tile|•|6:0}} [[Schist]]
 +
* {{Raw Tile|%|0:7:1}} {{Raw Tile|•|0:1}} [[Slate]]
 +
|}
 +
 
 +
:''(* These stones are practically identical within the game, distinguished only by their names and their un-mined presentation on the map. See [[basalt]] for the sole minor difference.)''
 +
 
 +
== Other Stone  ==
 +
Stones found on this table will occur as [[cluster|pockets and veins]] inside their respective stone layers (see above). When your miners newly encounter one of them, the game will pause and you will receive an announcement; even for the ones that have no use other than to build constructions of unusual colors. Note that the veins or clusters can spread into other layers, and may cause some layers to contain stones they usually wouldn't. A few of these stones, such as [[Olivine]], have other, more interesting minerals appear inside them.
 +
 
 +
Non-layer stone formations occur in one of three shapes: large clusters, veins, and small clusters. ''(See [[Vein|Veins & Clusters]] for full info.)''
 +
 
 +
''The following table does not contain [[ore|ores]] and [[gem|gems]].''
 +
 
 +
{| class="wikitable" cellspacing="0" border="1" cellpadding="5"
 
|-
 
|-
−
! Stone name
+
! Icons
−
! Ore
+
! Name
 +
! Found in
 
|-
 
|-
−
| [[Hematite]]  
+
|{{Raw Tile|^|7:7:1}}  {{Raw Tile|•|7:1}}||[[Alabaster]]||[[Gypsum]]'''(S)'''
−
|| Iron
 
 
|-
 
|-
−
| [[Limonite]]  
+
|{{Raw Tile|`|7:7:1}}  {{Raw Tile|•|7:1}}||[[Alunite]]||All [[Igneous extrusive]]'''(L)''', [[Kaolinite]]'''(L)'''
−
|| Iron
 
 
|-
 
|-
−
| [[Garnierite]]  
+
|{{Raw Tile|v|7:7:1}}  {{Raw Tile|•|7:0}}||[[Anhydrite]]||[[Gypsum]]'''(S)''', [[Satinspar]]'''(1)''', [[Alabaster]]'''(1)''', [[Selenite]]'''(1)'''
−
|| Nickel
 
 
|-
 
|-
−
| [[Gold nuggets]]  
+
|{{Raw Tile|+|4:7:0}}  {{Raw Tile|•|4:0}}||[[Bauxite]]||All [[Sedimentary]]'''(L)'''
−
|| Gold
 
 
|-
 
|-
−
| [[Silver nuggets]]  
+
|{{Raw Tile|☼|0:7:1}}  {{Raw Tile|☼|0:1}}||[[Bituminous coal]]||All [[Sedimentary layer|Sedimentary]]'''(V)'''
−
|| Silver
 
 
|-
 
|-
−
| [[Copper nuggets]]  
+
|{{Raw Tile|`|7:7:1}}  {{Raw Tile|•|7:1}}||[[Borax]]||[[Gypsum]]'''(S)''', [[Rock salt]]'''(L)'''
−
|| Copper
 
 
|-
 
|-
−
| [[Malachite]]  
+
|{{Raw Tile|%|6:7:1}}  {{Raw Tile|•|6:1}}||[[Brimstone]]||All [[Igneous extrusive]]'''(S)''', [[Gypsum]]'''(S)'''
−
|| Copper
 
 
|-
 
|-
−
| [[Galena]]  
+
|{{Raw Tile|"|7:7:1}}  {{Raw Tile|•|7:1}}||[[Calcite]]||[[Limestone]]'''(S)''', [[Marble]]'''(S)'''
−
|| Lead, Silver
 
 
|-
 
|-
−
| [[Sphalerite]]  
+
|{{Raw Tile|&#61;|0:7:1}}  {{Raw Tile|•|0:1}}||[[Chromite]]||[[Olivine]]'''(V)'''
−
|| Zinc
 
 
|-
 
|-
−
| [[Cassiterite]]  
+
|{{Raw Tile|£|4:7:1}}  {{Raw Tile|*|4:1}}||[[Cinnabar]]||All [[Igneous extrusive]]'''(V)''', [[Shale]]'''(V)''', [[Quartzite]]'''(V)'''
−
|| Tin
 
 
|-
 
|-
−
| [[Platinum nuggets]]  
+
|{{Raw Tile|£|1:7:1}}  {{Raw Tile|*|1:1}}||[[Cobaltite]]||All [[Igneous]]'''(V)''', All [[Metamorphic]]'''(V)'''
−
|| Platinum
 
 
|-
 
|-
−
| [[Tetrahedrite]]  
+
|{{Raw Tile|-|7:7:1}}  {{Raw Tile|•|7:1}}||[[Cryolite]]||[[Granite]]'''(S)'''
−
|| Copper, Silver
 
 
|-
 
|-
−
| [[Horn silver]]  
+
|{{Raw Tile|o|0:7:1}}  {{Raw Tile|•|0:1}}||[[Graphite]]||[[Gneiss]]'''(S)''', [[Quartzite]]'''(S)''', [[Marble]]'''(S)''', [[Schist]]'''(S)'''
−
|| Silver
+
|-
 +
|{{Raw Tile|#|6:7:1}}  {{Raw Tile|•|6:1}}||[[Gypsum]]||All [[Sedimentary]]'''(L)'''
 
|-
 
|-
−
| [[Bismuthinite]]  
+
|{{Raw Tile|"|0:7:1}}  {{Raw Tile|•|0:1}}||[[Hornblende]]||All [[Igneous]]'''(S)''', All [[Metamorphic]]'''(S)'''
−
|| Bismuth
 
 
|-
 
|-
−
| [[Magnetite]]  
+
|{{Raw Tile|.|0:7:1}}  {{Raw Tile|•|0:1}}||[[Ilmenite]]||[[Gabbro]]'''(S)'''
−
|| Iron
 
 
|-
 
|-
−
| [[Aluminum]]  
+
|{{Raw Tile|░|0:7:1}}  {{Raw Tile|•|0:1}}||[[Jet]]||All [[Sedimentary]]'''(L)'''
−
|| Aluminum
+
|-
−
|}
+
|{{Raw Tile|&#61;|4:7:0}}  {{Raw Tile|•|4:0}}||[[Kaolinite]]||All [[Sedimentary]]'''(L)'''
−
 
+
|-
−
== Economic stones ==
+
|{{Raw Tile|%|1:7:0}}  {{Raw Tile|•|1:0}}||[[Kimberlite]]||[[Gabbro]]'''(V)'''
−
 
+
|-
−
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 {{K|z}}&nbsp;:&nbsp;<tt>Stone</tt> menu to un-restrict them.
+
|{{Raw Tile|*|0:7:1}}  {{Raw Tile|•|0:1}}||[[Lignite]]||All [[Sedimentary]]'''(V)'''
−
 
+
|-
−
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.
+
|{{Raw Tile|%|7:7:1}} {{Raw Tile|•|7:1}}||[[Marcasite]]||[[Kaolinite]]'''(S)'''
−
 
+
|-
−
{| class="wikitable"
+
|{{Raw Tile|v|0:7:1}}  {{Raw Tile|•|0:1}}||[[Mica]]||All [[Metamorphic]]'''(L)''', [[Granite]]'''(L)'''
 
|-
 
|-
−
! Stone name
+
|{{Raw Tile|%|3:7:1}}  {{Raw Tile|•|3:1}}||[[Microcline]]||All Stone'''(L)'''
−
! Use
 
 
|-
 
|-
−
! [[Limestone]]  
+
|{{Raw Tile|%|2:7:0}}  {{Raw Tile|•|2:0}}||[[Olivine]]||[[Gabbro]]'''(L)'''
−
|| Flux stone
 
 
|-
 
|-
−
! [[Dolomite]]  
+
|{{Raw Tile|-|6:7:1}}  {{Raw Tile|•|6:1}}||[[Orpiment]]||All [[Igneous extrusive]]'''(S)'''
−
|| Flux stone
 
 
|-
 
|-
−
! [[Chalk]]  
+
|{{Raw Tile|%|6:7:1}}  {{Raw Tile|•|6:1}}||[[Orthoclase]]||All [[Igneous intrusive]]'''(L)''', All [[Metamorphic]]'''(L)'''
−
|| Flux stone
 
 
|-
 
|-
−
! [[Marble]]  
+
|{{Raw Tile|,|7:7:1}}  {{Raw Tile|•|7:1}}||[[Periclase]]||[[Marble]]'''(S)'''
−
|| Flux stone
 
 
|-
 
|-
−
! [[Calcite]]  
+
|{{Raw Tile|%|4:7:1}}  {{Raw Tile|•|4:1}}||[[Petrified wood]]||All [[Sedimentary]]'''(S)'''
−
|| Flux stone
 
 
|-
 
|-
−
! [[Bituminous coal]]  
+
|{{Raw Tile|*|5:7:0}}  {{Raw Tile|•|5:0}}||[[Pitchblende]]||[[Granite]]'''(S)'''
−
|| Coke
 
 
|-
 
|-
−
! [[Lignite]]  
+
|{{Raw Tile|Θ|6:7:0}}  {{Raw Tile|•|6:0}}||[[Puddingstone]]||[[Conglomerate]]'''(L)'''
−
|| Coke
 
−
|}
 
−
 
 
−
== Other stones ==
 
−
 
 
−
{| class="wikitable" border="1"
 
 
|-
 
|-
−
| [[Cinnabar]]
+
|{{Raw Tile|%|0:7:1}}  {{Raw Tile|•|0:1}}||[[Pyrolusite]]||All [[Igneous]]'''(S)'''
−
| [[Cobaltite]]
 
−
| [[Gypsum]]
 
−
| [[Talc]]
 
−
| [[Jet]]
 
−
| [[Puddingstone]]
 
 
|-
 
|-
−
| [[Petrified wood]]
+
|{{Raw Tile|%|4:7:1}}  {{Raw Tile|•|4:1}}||[[Realgar]]||All [[Igneous extrusive]]'''(S)'''
−
| [[Graphite]]
 
−
| [[Brimstone]]
 
−
| [[Kimberlite]]
 
−
| [[Realgar]]
 
−
| [[Orpiment]]
 
 
|-
 
|-
−
| [[Stibnite]]
+
|{{Raw Tile|`|5:7:0}}  {{Raw Tile|•|5:0}}||[[Rutile]]||All [[Metamorphic]]'''(S)''', [[Granite]]'''(S)'''
−
| [[Marcasite]]
 
−
| [[Sylvite]]
 
−
| [[Cryolite]]
 
−
| [[Periclase]]
 
−
| [[Ilmenite]]
 
 
|-
 
|-
−
| [[Rutile]]
+
|{{Raw Tile|x|6:7:1}}  {{Raw Tile|•|6:1}}||[[Saltpeter]]||All [[Sedimentary]]'''(S)'''
−
| [[Chromite]]
 
−
| [[Pyrolusite]]
 
−
| [[Pitchblende]]
 
−
| [[Bauxite]]
 
−
| [[Borax]]
 
 
|-
 
|-
−
| [[Olivine]]
+
|{{Raw Tile|-|7:7:1}}  {{Raw Tile|•|7:1}}||[[Satinspar]]||[[Gypsum]]'''(S)'''
−
| [[Hornblende]]
 
−
| [[Kaolinite]]
 
−
| [[Serpentine]]
 
−
| [[Orthoclase]]
 
−
| [[Microcline]]
 
 
|-
 
|-
−
| [[Mica]]
+
|{{Raw Tile|;|7:7:1}}  {{Raw Tile|•|7:1}}||[[Selenite]]||[[Gypsum]]'''(S)'''
−
| [[Saltpeter]]
 
−
| [[Alabaster]]
 
−
| [[Selenite]]
 
−
| [[Satinspar]]
 
−
| [[Anhydrite]]
 
 
|-
 
|-
−
| [[Alunite]]
+
|{{Raw Tile|≈|2:7:0}}  {{Raw Tile|•|2:0}}||[[Serpentine]]||[[Olivine]]'''(S)'''
−
| [[Raw adamantine]]
 
−
| [[Sandstone]]
 
−
| [[Siltstone]]
 
−
| [[Mudstone]]
 
−
| [[Shale]]
 
 
|-
 
|-
−
| [[Claystone]]
+
|{{Raw Tile|%|7:7:1}}  {{Raw Tile|•|7:0}}||[[Stibnite]]||All [[Igneous extrusive]]'''(S)'''
−
| [[Rock salt]]
 
−
| [[Conglomerate]]
 
−
| [[Flint]]
 
−
| [[Chert]]
 
−
| [[Granite]]
 
 
|-
 
|-
−
| [[Diorite]]
+
|{{Raw Tile|&#61;|6:7:1}}  {{Raw Tile|•|6:1}}||[[Sylvite]]||[[Rock salt]]'''(L)'''
−
| [[Gabbro]]
 
−
| [[Rhyolite]]
 
−
| [[Basalt]]
 
−
| [[Andesite]]
 
−
| [[Felsite]]
 
 
|-
 
|-
−
| [[Obsidian]]
+
|{{Raw Tile|&#124;|7:7:1}}  {{Raw Tile|•|7:1}}||[[Talc]]||[[Dolomite]]'''(L)'''
−
| [[Quartzite]]
 
−
| [[Slate]]
 
−
| [[Phyllite]]
 
−
| [[Schist]]
 
−
| [[Gneiss]]
 
 
|}
 
|}
 +
:'''(L)''' - occurs in large clusters
 +
:'''(V)''' - occurs in veins
 +
:'''(S)''' - occurs in small clusters
 +
:'''(1)''' - occurs in individual tiles
 +
 +
== DF Geology and real-world Geology ==
 +
The geology and stones of Dwarf Fortress are based on real-world geology and mineralogy. To understand the terms used here, you may want to crack open a geology textbook (a high school one should suffice). If you don't happen to have one close by, the Wikipedia articles for [http://en.wikipedia.org/wiki/Geology geology], [http://en.wikipedia.org/wiki/Mineralogy mineralogy], or the [http://en.wikipedia.org/wiki/Rock_layers terms in question] might help.
 +
 +
{{40d stones}}
 +
 +
{{Category|Stone|*}}
 +
{{Category|Materials}}

Latest revision as of 20:25, 23 June 2017

v50.14 · v0.47 · v0.34 · v0.31 · v0.28.181.40d · v0.23
This article is about an older version of DF.
xTATTEREDx  · +FINE+  · *SUPERIOR*  · ≡EXCEPTIONAL≡  · ☼MASTERWORK☼

(For the beginning player, see also The Non-Dwarf's Guide to Rock)


Stone or rock is a naturally occurring solid aggregate of minerals. It sometimes leaves behind material after being mined or collapsing. Other types of minable tiles include soil and sand.

Stone is divided into a few key categories:

Economic stones are types of stone that can be reserved for a special purpose. For ores, this is smelting and for fluxes, this is steel production. Bituminous coal and lignite can be reserved for making coke.

Having created loose stone, many times you'll want to get rid of it or at least move it someplace else. See stone management for advice.

This article is about DF geology and the distribution of stones, and does not contain the specific locations of metal ores or gems.

Main layer types[edit]

Main article: Layer

There are four types of stone layers (plus soil, which is not stone). The type of layer is the primary indicator of what kind of ores you are likely to find on the map, as well as a sign of volcanic activity.

The types are sedimentary layers, igneous intrusive layers, igneous extrusive layers, and metamorphic layers.

The primary types of rock only occur in their own layers. (e.g. you won't find limestone in a marble layer.)

Stones forming entire layers[edit]

These types of stone occur as entire layers, containing some veins and pockets of other minerals (see below). If one of the following types of stone is present on your map, it will be listed in one of the biomes on the embark screen.

Sedimentary Igneous intrusive Igneous extrusive Metamorphic
(* These stones are practically identical within the game, distinguished only by their names and their un-mined presentation on the map. See basalt for the sole minor difference.)

Other Stone[edit]

Stones found on this table will occur as pockets and veins inside their respective stone layers (see above). When your miners newly encounter one of them, the game will pause and you will receive an announcement; even for the ones that have no use other than to build constructions of unusual colors. Note that the veins or clusters can spread into other layers, and may cause some layers to contain stones they usually wouldn't. A few of these stones, such as Olivine, have other, more interesting minerals appear inside them.

Non-layer stone formations occur in one of three shapes: large clusters, veins, and small clusters. (See Veins & Clusters for full info.)

The following table does not contain ores and gems.

Icons Name Found in
^ • Alabaster Gypsum(S)
` • Alunite All Igneous extrusive(L), Kaolinite(L)
v • Anhydrite Gypsum(S), Satinspar(1), Alabaster(1), Selenite(1)
+ • Bauxite All Sedimentary(L)
☼ ☼ Bituminous coal All Sedimentary(V)
` • Borax Gypsum(S), Rock salt(L)
% • Brimstone All Igneous extrusive(S), Gypsum(S)
" • Calcite Limestone(S), Marble(S)
= • Chromite Olivine(V)
£ * Cinnabar All Igneous extrusive(V), Shale(V), Quartzite(V)
£ * Cobaltite All Igneous(V), All Metamorphic(V)
- • Cryolite Granite(S)
o • Graphite Gneiss(S), Quartzite(S), Marble(S), Schist(S)
# • Gypsum All Sedimentary(L)
" • Hornblende All Igneous(S), All Metamorphic(S)
. • Ilmenite Gabbro(S)
░ • Jet All Sedimentary(L)
= • Kaolinite All Sedimentary(L)
% • Kimberlite Gabbro(V)
* • Lignite All Sedimentary(V)
% • Marcasite Kaolinite(S)
v • Mica All Metamorphic(L), Granite(L)
% • Microcline All Stone(L)
% • Olivine Gabbro(L)
- • Orpiment All Igneous extrusive(S)
% • Orthoclase All Igneous intrusive(L), All Metamorphic(L)
, • Periclase Marble(S)
% • Petrified wood All Sedimentary(S)
* • Pitchblende Granite(S)
Θ • Puddingstone Conglomerate(L)
% • Pyrolusite All Igneous(S)
% • Realgar All Igneous extrusive(S)
` • Rutile All Metamorphic(S), Granite(S)
x • Saltpeter All Sedimentary(S)
- • Satinspar Gypsum(S)
; • Selenite Gypsum(S)
≈ • Serpentine Olivine(S)
% • Stibnite All Igneous extrusive(S)
= • Sylvite Rock salt(L)
| • Talc Dolomite(L)
(L) - occurs in large clusters
(V) - occurs in veins
(S) - occurs in small clusters
(1) - occurs in individual tiles

DF Geology and real-world Geology[edit]

The geology and stones of Dwarf Fortress are based on real-world geology and mineralogy. To understand the terms used here, you may want to crack open a geology textbook (a high school one should suffice). If you don't happen to have one close by, the Wikipedia articles for geology, mineralogy, or the terms in question might help.

V · T · E
Sedimentary
Igneous
Intrusive
Extrusive
Metamorphic
Ore
Economic
Other
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