The Coppermind has spoilers for all of Brandon's published works. Information about books that have not yet been released, like Stormlight 5, is allowed only on meta-pages for the books themselves. For more details, see our spoiler policy. To view an earlier version of the wiki without spoilers for a book, go to the Time Machine!

This page or section needs to be updated with new information for The Lost Metal!
Be aware that in its current state, it may not include all additional content yet.
Chromium (Feruchemy).svg
Power Drain Investiture
Type External, Pulling, Enhancement
Misting Leecher
Power Store Fortune
Type Spiritual
Ferring Spinner
Power Might steal destiny
Type Spiritual
Universe Cosmere

Chromium is the external enhancement pulling metal. An Allomancer burning chromium is able to make the metal reserves of another Allomancer vanish. Feruchemists can use chromium to store Fortune, and when used as a Hemalurgic spike, chromium might steal destiny.

The paired alloy of chromium used in the Metallic Arts is nicrosil.

Allomantic UseEdit

A chromium Misting is known as a Leecher. Chromium acts just like aluminum inside the body, causing any Allomancers touched by a Leecher to lose their metal reserves.[1][2][3] When burning away a person's metals, it feels like pulling power from the metal and returning it to an external source.[4] Being leeched makes one feel a sudden coldness.[2]

This power is similar to Nightblood and larkin.[5] When burning away a person's metals, non-Invested metals go before the Invested ones.[6] Only Allomantically relevant metals can be burned away.[7]

Draining InvestitureEdit

A Leecher can also drain other forms of Investiture. They would be fairly effective at draining a person's Breath or Stormlight.[8] They could also Leech a Feruchemist who was tapping their metalmind.[9] They would be able to Leech from a Lifeless.[10] A Leecher could prevent a Shardbearer from summoning their blade,[11] and can prevent a weapon using Investiture from working.[4] If a Leecher touched Nightblood, the Leecher would die.[12]

Feruchemical UseEdit

A chromium Ferring is known as a Spinner. Chromium is used to store Fortune. A Spinner filling a chromiummind will be unlucky, and can tap it to increase their luck.[1]


A chromium Compounder might be able to use chromium to have a nearly infinite supply of fortune and luck; however, the mechanics of Fortune are unknown at this time.[13]

Hemalurgic UseEdit

When used as a Hemalurgic spike, chromium might steal destiny.[14]

Other UsesEdit

Alonoe of the Ire mentions that drawing on Fortune can cause coincidences to happen.[15] Odium implies it may be used to predict the future.[16]


This article is still missing information. Please help The Coppermind by expanding it.