Ores are primary crafting materials necessary for game progress. They usually must be crafted into bars at a Furnace, after which they can craft several essential tools, weapons, armor, and other items. Some items require raw ores themselves, most commonly potions. Raw ores can also be used as plain blocks for construction.
The Calamity Mod adds 11 new ore blocks to the game, that are used to craft a variety of tools, weapons, and armor. With the exception of Sea Prism, Charred Ore, and Scoria Ore, which are generated upon world creation, all ores are spawned upon the defeat of specific bosses.
| Ore | Rarity | Sell price | Tile value | |
|---|---|---|---|---|
 |
Aerialite Ore | 
|
6 
|
450 |
 |
Charred Ore | 
|
12
|
675 |
 |
Cryonic Ore |
|
12
|
675 |
 |
Perennial Ore | 
|
18
|
710 |
 |
Scoria Ore | 
|
24
|
850 |
 |
Uelibloom Ore | 
|
50
|
950 |
 |
Auric Ore | 
|
4 
|
1000 |
 |
Astral Ore | 
|
36
|
900 |
 |
Sea Prism | 
|
10
|
n/a |
 |
Exodium Cluster | 
|
1 60
|
760 |
 |
Hallowed Ore |
|
12
|
690 |
Contents
Pre-Hardmode[]
| Tier | Ores | Minimum Tool Required |
Ores Per Bar |
Source | Required Boss |
|---|---|---|---|---|---|
| 1 |  Sea Prism |
n/a | n/a | Sunken Sea | Desert Scourge |
| 2 |  Aerialite Ore |
  |
4 | Underground, Cavern | Hive Mind / Perforators |
Hardmode[]
| Tier | Ores | Minimum Tool Required |
Ores Per Bar |
Source | Required Boss |
|---|---|---|---|---|---|
| 3 |  Charred Ore |
  |
4 | Brimstone Crag | n/a (One Mechanical Boss) |
| 4 |  Cryonic Ore |
  |
5 | Ice biome | Cryogen (Two Mechanical Bosses) |
| 5 |  Hallowed Ore |
 |
4 | Underground Hallow | All Mechanical Bosses |
| 6 |  Perennial Ore |
  |
5 | Cavern | Plantera |
| 7 |  Scoria Ore |
 |
5 | Abyss | n/a (Golem) |
| 8 |  Astral Ore |
|
2 | Astral Infection | Astrum Deus |
Post-Moon Lord[]
| Tier | Ores | Minimum Tool Required |
Ores Per Bar |
Source | Required Boss |
|---|---|---|---|---|---|
| 9 |  Exodium Cluster |
 |
n/a | Planetoid | Moon Lord |
| 10 |  Uelibloom Ore |
|
5 | Underground Jungle, Cavern | Providence, the Profaned Goddess |
| 11 |  Auric Ore |
 |
12 | Cavern | Jungle Dragon, Yharon |
Notes[]
- All ores (excluding Exodium and Auric) have corresponding enemies (usually Slimes) which drop their respective ore, in order to make the amount obtainable unlimited.
- Prism Shards grow naturally in the Sunken Sea and are dropped by Prism-Backs after the Desert Scourge has been defeated as well as Blinded Anglers, which can be used to craft Sea Prisms.
- Instead of a slime, Scoria Ore is dropped by Devil Fishes and Chaotic Puffers in the Abyss after the Golem has been defeated.
