Bit of Aerosiderite is in Weapon Ascension material of Genshin Impact.
Description: "The coastal nations of Teyvat refer to the region beyond the protection of the seven as the dark sea. It is said many defeated gods refused to live under the new order of the seven, so they fled to remote islands and became evil gods. However, their powers came from the same source as Rex Lapis, separate from this all-devouring darkness. "
| Item Type | Weapon Ascension Material |
| Rarity | 4 Stars |
How to Get Bit of Aerosiderite
There is 1 source to obtain Bit of Aerosiderite.
Crafting Type: Alchemy 
Piece of Aerosiderite (x3).
- Source 1: Hidden Palace of Lianshan Formula.
Craft Usage
| Name | Image | Craft Type |
| Chunk of Aerosiderite |  | Alchemy |
| Piece of Aerosiderite | | Alchemy |
Weapon Ascension Usage
Bit of Aerosiderite is use for ascension weapons below:
| Weapon Name |
| Iron Sting |
| Skyrider Sword |
Related Weapon Ascension
 Grain of Aerosidrite | Piece of Aerosidrite |
| Bit of Aerosidrite | Chunk of Aerosidrite |