How to Get Forgotten Dust in Stoneblock 4: Step-by-Step Guide (2026)

What Is Forgotten Dust in Stoneblock 4?

Stoneblock 4 is the FTB (Feed The Beast) skyblock-style modpack where you start trapped in a small stone room and slowly unlock the world through quests. Like other big kitchen-sink packs, it has hundreds of dusts, crystals, and crafting materials — and “Forgotten Dust” is one of those items players often need for a quest but have trouble finding.

The tricky part is that modpacks like Stoneblock 4 change recipes between updates. An item that was crafted one way in version 1.0 might come from a totally different machine in version 1.5. That is why the number one rule for this pack is: always check JEI first. JEI (Just Enough Items) shows the real, current recipes for your exact version of the pack.

Step 1: Look It Up in JEI

Before you farm anything or craft anything, do this:

1. Press E to open your inventory.
2. Click the search box at the bottom of the JEI item list and type forgotten dust.
3. Hover your mouse over the Forgotten Dust item.
4. Press R (for “recipe”) to see every way to make it.
5. Press U (for “uses”) to see what it is crafted into — this tells you how much you need.

If JEI shows a crafting recipe, a machine recipe (like a crusher or millstone), or a mob drop, that is your answer. You can even click the + button in the recipe view to auto-fill the ingredients into a crafting table.

Step 2: Check Your Quest Book

Stoneblock 4 has a quest book that guides your progress. Many “where do I get this item?” questions are answered there:

1. Open the quest book (default key, usually bound in your controls menu).
2. Search for “forgotten dust” in the quest book search.
3. Look at the quests that require it — the quest description often hints at the source.
4. Some quests give the item as a reward, so you may not need to craft it at all.

Step 3: Possible Sources of Forgotten Dust

Depending on your pack version, Forgotten Dust may come from one of these places. Verify each one in JEI:

The Cognition Mod (if included)

In the Cognition mod, Forgotten Dust drops when an infected bookshelf fully decays — there is a 50% chance per decayed bookshelf. Infected bookshelves are normal bookshelves being digested by bibliophages (they pulse green). They slowly release XP orbs and can infect adjacent bookshelves. If Stoneblock 4 includes Cognition, this could be your source. Check JEI to confirm the item ID matches.

Crushing and Processing Machines

Many dusts in Stoneblock 4 are made by crushing ores, stones, or crystals in machines like the Mekanism Crusher, Create Millstone, or similar processing blocks. Check JEI for machine recipes that output Forgotten Dust.

Mob Drops and Loot

Some pack-specific dusts drop from certain mobs or appear in loot bags and quest rewards. If JEI shows no crafting recipe, hover the item and check the “Mob Drops” or loot-related tabs.

Step 4: Automate It

Once you know the source, set up automation so you never run out:

• Machine recipe: Pipe items into the machine with item conduits or hoppers, and pull the dust out into storage.
• Farm-based source: Build a simple farm (for example, a bookshelf setup for infected bookshelves) and collect drops with hoppers or a vacuum chest.
• Storage: Connect everything to your Applied Energistics (AE2) or Refined Storage system once you have one, so the dust is always available for autocrafting.

Tips for Finding Any Item in Stoneblock 4

• JEI is the truth. Recipes in online guides may be outdated. Your in-game JEI always matches your pack version.
• Check the item ID. Hover over the item and press F3+H (advanced tooltips) to see its mod ID. This tells you which mod adds it, which narrows down the search.
• Ask in the quest book. The pack’s quests are designed to teach you where things come from.
• Update your pack. If an item seems to have no recipe at all, you may be on an old version. Updating can add missing recipes.

Common Mistakes

• Following old guides blindly. A YouTube video from six months ago may show a recipe that no longer exists. Always cross-check with JEI.
• Confusing similarly named items. Modpacks have many dusts (sky dust, certus quartz dust, etc.). Make sure you are looking at the right one — check the tooltip mod name.
• Forgetting the quest rewards. Many players grind for an item that a quest would have handed them for free.

FAQs

What mod adds Forgotten Dust in Stoneblock 4?

Hover over the item with advanced tooltips on (F3+H) to see the mod ID. One known source is the Cognition mod, where it drops from decayed infected bookshelves — but confirm in your pack’s JEI.

Why does JEI show no recipe for Forgotten Dust?

It may come from a non-crafting source like a mob drop, loot bag, or quest reward. Check the item’s “uses” and look at mob-drop or loot tabs in JEI.

Can I get Forgotten Dust from sieving?

Sieving is a major source of materials in Stoneblock 4, but whether this specific dust is a sieve drop depends on your version. Check JEI’s sieve recipes.

How much Forgotten Dust do I need?

Press U on the item in JEI to see every recipe it is used in. Total up what your current quests need before you start farming.

Does the recipe change between Stoneblock 4 versions?

Yes, it can. FTB updates tweak recipes regularly. That is why in-game JEI is more reliable than any online guide.

What if the item doesn’t exist in my version?

Make sure your pack is updated to the latest version. If it still doesn’t appear, check whether you spelled it right in the JEI search — try searching just “forgotten”.

Can I automate Forgotten Dust production?

Usually yes. Once you know the source (machine, farm, or mob grinder), pipe the outputs into your storage system with hoppers, conduits, or an AE2 network.

Conclusion

Getting Forgotten Dust in Stoneblock 4 comes down to one habit: check JEI first. Press E, search the item, press R for recipes and U for uses, and let the quest book guide you. Recipes shift between pack versions, so your in-game recipe viewer beats any guide written months ago. Once you find the source, automate it and move on to the next quest.

Related guides: our Stoneblock 4 beginner’s guide, how to set up an AE2 storage system, and how to automate sieving in Stoneblock 4. Further reading: the Cognition mod wiki and the StoneBlock 4 community wiki.