From Dwarf Fortress Wiki

Ilmenite

. . . . . . . • = = = . . . • • = = = . . • • • • = = . • • • • • • =
Uses
Masonry Stone crafting Construction
Location
found within gabbro as small clusters
Properties
Material value 1 Magma safe Melting point 12457 (m) Boiling point 14000 (m) Ignition point none (m) Solid density 2307 Specific heat 800
Wikipedia article

v0.31.12 · v0.28.181.40d · v0.23.130.23a This article is about the current version of DF. More Info

Ilmenite stone has no specific use, but in the real world it can be smelted into Titanium using the Kroll Process

Raws
[INORGANIC:ILMENITE] [USE_MATERIAL_TEMPLATE:STONE_TEMPLATE] [STATE_NAME_ADJ:ALL_SOLID:ilmenite][DISPLAY_COLOR:0:7:1][TILE:'.'] [ENVIRONMENT_SPEC:GABBRO:CLUSTER_SMALL:100] [SOLID_DENSITY:2307] [IS_STONE] [MELTING_POINT:12457] another titanium ore, same comment applies

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 • Lignite • Satinspar • Selenite
Unique	Graphite • Kimberlite
Other	Alunite • Anhydrite • Bauxite • Borax • Brimstone • Chromite • Cinnabar • Cobaltite • Cryolite • Hornblende • Ilmenite • Jet • Kaolinite • Marcasite • Mica • Microcline • Olivine • Orpiment • Orthoclase • Periclase • Petrified wood • Pitchblende • Puddingstone • Pyrolusite • Realgar • Rutile • Saltpeter • Serpentine • Stibnite • Sylvite • Talc