ModsJava
Onyxium
Java mod listed for Minecraft 1.20–1.21. Downloads from the MC Java Mods app on Android.
I don't know my version or loader
Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.
No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.
Onyxium
Onyxium is endgame-focused mod for Minecraft that introduces a powerful new material: Onyx
🔥 Overview
Discover Onyx Ore, a rare resource that spawns more in the dangerous Basalt Deltas of the Nether.
Each vein contains only a single block, making it challenging to find, but increased spawn attempts ensure dedicated explorers are rewarded.
Wiki : https://ven0os.github.io/onyxium-wiki/
⚒️ Material & Progression
Onyx is designed as a high-tier material
Tools and armor !
✨ Features
- Armor sets, tools effects and more !
🧩 Compatibility & Design
- High compatibility
- Easy integration into modpacks
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.1, 1.21, 1.21.4
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
File checked by MCModsHub
- Ships as onyxium-1.20.1-2.0.3.jar — drop this file into the mods folder
- Download size: 149 KB
- Download link checked 24 Oct 2026 — working
These come from our own check of the pack file, not from the source page.