DF2014:Unknown material

!!UNKNOWN!!  · xTATTEREDx  · +FINE+  · *SUPERIOR*  · ≡EXCEPTIONAL≡  · ☼MASTERWORK☼

v50.15 · v0.47.05 · v0.34 · v0.31 · v0.28 · v0.23 This article is about an older version of DF. More Info · V

Not to be confused with unknown substance.

Unknown material is a placeholder material that is not legitimately obtainable in-game. It appears as a light gray solid with no name, which is only referred to as "unknown material" in specific circumstances. It has an internal material ID of -1, the same as used in tasks that require items of any or unspecified material.

Trivia

• Since the material ID of -1 is used as a placeholder value for any material, items made of the unknown material cannot be specifically requested as an ingredient even in modded reactions.
• Boxes made of unknown material are referred to as a "boxes and bag". This specific string is used in the preference "Urist McDwarf likes boxes and bags".

V · T · E Materials
More: Gems • Metals • Stones
Creature	Blood • Bone • Brain • Cartilage • Cheese • Chitin • Egg • Fat • Feather • Hair (Wool • Yarn) • Hoof • Horn • Ichor • Leather • Milk • Nail • Nervous tissue • Parchment • Pearl • Scale • Shell • Silk • Skin • Spit • Sweat • Tallow • Tears • Tooth • Wax
Plant	Fiber (Paper • Slurry) • Flower • Fruit • Leaf • Oil • Plant powders (Dye • Flour) • Seed (Press cake) • Wood
Creature/Plant	Alcohol • Extract (Golden salve • Gnomeblight • Honey • Royal jelly • Syrup • Venom) • Soap
Inorganic	Metal • Milk of lime • Soil (Clay • Sand) • Stone (Ash glaze • Earthenware • Gem • Gypsum plaster • Porcelain • Quicklime • Stoneware • Tin glaze)
Hardcoded	Amber • Ash • Coral • Filth • Fuel • Glass • Grime • Ice • Lye • Magma • Mud • Pearlash • Potash • Salt • Unknown substance • Vomit • Water
See also: Material science