DF2012:Bauxite

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Bauxite

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Uses
Masonry Stone crafting Construction
Location
Found in sedimentary layers as large clusters
Properties
Material value 1 Magma safe Melting point 13600 (m) Boiling point 15000 (m) Ignition point none (m) Solid density 3100 Specific heat 800
Contains
Variscite (small clusters) Ruby (small clusters) Sapphire (small clusters)
Wikipedia article

v0.34.11 · v0.31.25 · v0.28.181.40d · v0.23.130.23a This article is about the current version of DF. More Info

Bauxite is a dark-red sedimentary stone. Once highly prized as the only practical source of magma-safe mechanisms to create magma-proof devices, its importance has declined with the addition of many new heat-resistant forms of stone as well as the ability to make metal mechanisms from iron and steel. Nevertheless, it is still used by some long-time players for nostalgia and its rare, bloody appearance makes it an interesting aesthetic choice.

Bauxite may contain both sapphire and ruby.

In Real Life

In real life, bauxite is an ore of aluminum, but the technology required to extract it is beyond the level possessed by dwarves.

Bauxite is a stone comprised primarily of the minerals gibbsite (Aluminum Hydroxide: Al(OH)₃), boehmite (Aluminum Oxide-Hydroxide: γ-AlO(OH)), and diaspore (Aluminum Oxide-Hydroxide: α-AlO(OH)) (none of which are individually present in Dwarf Fortress). Bauxite forms by the weathering and mineralization of various aluminum-rich soils or clays. Despite the correspondence in game, corundum, the mineral that makes up ruby and sapphire (Aluminum Oxide: Al₂O₃) does not form in bauxite.

Extracting aluminum from bauxite, even in the most primitive way, requires the use of the Hall–Héroult process: the electrolysis of bauxite which has been dissolved into molten cryolite. The development of this process transformed aluminum from an exceptionally rare metal to a cheap, utilitarian material. Dwarves have not yet discovered electricity, therefore they cannot make use of electrolysis to get aluminum from bauxite. (If it were implemented, lightning might work)

Raws
[INORGANIC:BAUXITE] [USE_MATERIAL_TEMPLATE:STONE_TEMPLATE] [STATE_NAME_ADJ:ALL_SOLID:bauxite][DISPLAY_COLOR:4:7:0][TILE:'+'] [ENVIRONMENT:SEDIMENTARY:CLUSTER:100] [MELTING_POINT:13600] [BOILING_POINT:15000] [IS_STONE] [SOLID_DENSITY:3100] aluminum can occasionally be found in its free form in environments that like oxygen, volcanic muds were mentioned

Stones
Sedimentary	Calcite • Chalk • Chert • Claystone • Conglomerate • Dolomite • Limestone • Mudstone • Rock salt • Sandstone • Shale • Siltstone
Igneous I.	Diorite • Gabbro • Granite
Igneous E.	Andesite • Basalt • Dacite • Obsidian • Rhyolite
Metamorphic	Gneiss • Marble • Phyllite • Quartzite • Schist • Slate
Ore	Adamantine, raw • Aluminum, native • Bismuthinite • Cassiterite • Copper, native • Galena • Garnierite • Gold, native • Hematite • Horn silver • Limonite • Magnetite • Malachite • Platinum, native • Silver, native • Sphalerite • Tetrahedrite
Economic	Alabaster • Bituminous coal • Calcite • Gypsum • Kaolinite • Lignite • Satinspar • Selenite
Unique	Graphite • Jet • Kimberlite • Pitchblende
Other	Alunite • Anhydrite • Bauxite • Borax • Brimstone • Chromite • Cinnabar • Cobaltite • Cryolite • Hornblende • Ilmenite • Marcasite • Mica • Microcline • Olivine • Orpiment • Orthoclase • Periclase • Petrified wood • Puddingstone • Pyrolusite • Realgar • Rutile • Saltpeter • Serpentine • Stibnite • Sylvite • Talc