Overview

Rare Rich Veins is a Minecraft Java Edition 26.2 Fabric mod that adds extremely rare, naturally generated large ore deposits to your world.

Normal vanilla ore generation stays completely unchanged. Rich veins generate separately and are designed to feel like a rare discovery instead of an easy source of unlimited materials.

Explore newly generated chunks and mine underground as normal. Every eligible chunk has a small chance to contain a rich ore deposit. These deposits generate in irregular, branching shapes and can contain much more ore than a normal vanilla vein.

Rich veins only appear in new chunks, so already explored areas will not receive new deposits.

Features

⛏️ 8 Rich Ore Types

Ore	Chance	Vein Size
🪨 Coal	3%	25–70 blocks
🟠 Copper	2.5%	30–80 blocks
⚙️ Iron	2%	20–50 blocks
🔴 Redstone	1.5%	20–45 blocks
🥇 Gold	1%	15–35 blocks
🔵 Lapis	1%	15–30 blocks
💎 Diamond	0.25%	12–24 blocks
💚 Emerald	0.15%	8–16 blocks

🌍 Natural Generation

• Rich deposits generate separately from vanilla ores.
• Uses irregular, branching vein shapes.
• Generates in stone and deepslate.
• Generates underground within configured height ranges.
• Avoids cave exposure when possible.
• Respects the world seed.
• Never modifies vanilla ore generation.

⚙️ Fully Configurable

• Enable or disable individual ores.
• Adjust generation chances.
• Configure minimum and maximum vein sizes.
• Configure generation heights.
• Select allowed dimensions.
• Enable or disable cave exposure.
• Adjust spacing between valuable veins.
• Global generation multiplier.
• Debug logging.
• Master enable/disable switch.

Invalid configuration values automatically fall back to safe defaults.

Commands & Requirements

Commands

/richveins reload

• Reloads the configuration without restarting the server.

/richveins info

• Displays the mod version, Minecraft version, Fabric Loader version, enabled ores, and debug status.

Requires Permission Level 2.

Performance

• Works in singleplayer and multiplayer.
• No databases.
• No unnecessary chunk scanning.
• Deterministic world generation.
• Lightweight and optimized for performance.

Requirements

• Minecraft 26.2
• Fabric Loader
• Fabric API 0.155.2+26.2 or newer
• Java 25

Note: Rich veins only generate in newly explored chunks. Existing chunks will remain unchanged.