HB's Ore Clusters and Regen
by holy_buckets
HB's Ore Clusters and Regen adds large shaped ore clusters to the world, and the clusters grow back after several days once they are harvested.
What it does
Rather than replacing vanilla ore generation, the mod works on top of it: it finds existing ore veins during world generation and creates a cluster around each one. Coal and iron can form clusters between 12x12x12 and 16x16x16 blocks, and the small vanilla veins players already know stay in place. Holy Bucket's series includes the mod, which depends on Balm and HB's Foundation.
Once a cluster is mined out, it regenerates over several days, so a single spot can be harvested again later. That gives players a reason to set up several small bases around the world and connect them, and it makes the choice of base location matter more. The clusters are configurable through a JSON config file, and the author describes them as a take on Gregtech-style ore generation that keeps vanilla mining at the core.
The mod runs on the client and the server, so both need it. It is published for Fabric, Forge and NeoForge across 7 release versions, 1.20.1 – 1.21.1, and the code is released under the MIT License.
Key features
Large ore clusters
Coal and iron ore veins grow into large shaped clusters between 12x12x12 and 16x16x16 blocks.
Vanilla veins kept
Existing ore veins are used as the seed for each cluster, so standard ore spawning still appears.
Regenerating clusters
Harvested clusters regenerate after several days, adding a renewable resource supply.
JSON configuration
Cluster size, spawning and regeneration timing can be adjusted in a JSON config file.
Cave discovery
Finding a cluster while exploring caves rewards the search and encourages mining in new areas.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 2
Use cases
Who it’s for: Players who want more ore in caves and survival worlds without losing vanilla mining, and server owners who tune ore generation through the config file. Both the server and every player need the mod.
How it compares
Block Veins is server-side only, published for Forge and NeoForge across 1.20.1 – 1.21.11 under the MIT License, and is not open source. Custom Ore Veins is also server-side only and is open source under the MIT License, with files for Fabric, Forge and NeoForge across 1.20 – 1.21.5. Reduced Ores runs on the server with the client optional, targets Forge and NeoForge for 1.20.1 – 1.21.10, and is not open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| HB's Ore Clusters and Regen | Fabric, Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2026-06-14 |
| Block Veins | Forge and NeoForge | 1.20.1 – 1.21.11 | Server-side only | 2025-12-14 |
| Custom Ore Veins | Fabric, Forge and NeoForge | 1.20 – 1.21.5 | Server-side only | 2025-12-29 |
| Reduced Ores | Forge and NeoForge | 1.20.1 – 1.21.10 | Server required, client optional | 2026-03-16 |
Questions
Does HB's Ore Clusters and Regen need Balm?
Does the server need the mod?
Which loader should a player choose?
In the catalog
HB's Ore Clusters and Regen is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 32,366 mods support Minecraft 1.21.1.
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What the author says
HB’s Ore Clusters and Regen is a mod that spawns large clusters of ore in the world in addition to the small vanilla ore veins players are used to. These ore clusters also regenerate (configurable) after several days so the clusters can be harvested again, boosting resource supply and incentivizing the player to set…
Official listing
- Modrinth page
- modrinth.com/mod/hbs-ore-clusters-and-regen
- Owner
- holy_buckets
- Published
- 2025-03-26
- Updated on Modrinth
- 2026-06-14
- Facts verified
- 2026-10-15