Larger Ore Veins: Classic
Increases the size of coal, iron, copper, and gold ore blobs and makes them less frequent
About this Mod
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This simple datapack changes mining to make it more rewarding when you find coal, iron, copper, or gold. The size of the ore blobs has been greatly increased, but have also been made less frequent to balance it out.
Coal ore blobs have a chance of generating coal blocks
Iron ore blobs have a chance of generating raw iron blocks
Copper ore blobs have a chance of generating raw gold blocks
Gold ore blobs have a chance of generating raw gold blocks
Some ore deposits are so concentrated that you can find small blobs of raw iron or raw gold
Notice
This is a world generation datapack. World generation data packs work best when added to your world during the world creation phase. You can still add them to your world after generating it, you just need to generate new chunks to see the effects.
Modifying this pack
Make sure you download the data pack version of this project.
To modify the size of the ores, go to data/minecraft/worldgen/configured_feature and change the size value in the desired JSON files (The maximum size is 64).
To modify the rarity of the ores, go to data/minecraft/worldgen/placed_feature and edit the count values in the desired JSON files.
(Note, some files currently use rarity_filter instead of count, this will be changed in an upcoming update)
Available Versions
How to Install Larger Ore Veins: Classic on Your Server
Order Server
Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).
Set datapack Loader
In the panel under "Egg", select the datapack loader and matching Minecraft version (1.21.1).
Install Mod
Open the mod browser in the dashboard and search for "Larger Ore Veins: Classic". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1, 1.21, 1.20.6 (+11 more)
Server-side
✓ RequiredRecommended RAM
6 GB(min. 4 GB)Frequently Asked Questions
Larger Ore Veins: Classic server crashes on startup – what to do?
Most common cause: wrong datapack version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.
Is Larger Ore Veins: Classic compatible with datapack and fabric and forge and neoforge and quilt?
Larger Ore Veins: Classic officially supports datapack, fabric, forge, neoforge, quilt for Minecraft 1.21.1, 1.21, 1.20.6. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Larger Ore Veins: Classic – how to optimize performance?
Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Larger Ore Veins: Classic consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Install Larger Ore Veins: Classic with just one click on your server.