Heavy Core

Heavy Core
Rarity tier	Epic
Renewable	No (except via ominous vault)
Stackable	Yes (64)
Tool
Blast resistance	30
Hardness	10
Luminous	No
Transparent	Yes
Waterloggable	Yes
Flammable	No
Catches fire; from lava	No
Map color (JE)	; 9 CLAY

A heavy core is a rare block that can be obtained from ominous vaults found in trial chambers. It can be combined with a breeze rod to craft a mace.

Obtaining

Generated loot

Item	Structure	Container	Quantity	Chance
Java Edition and Bedrock Edition
	Trial Chambers	Ominous Vault	1	7.5% { "item": "Heavy Core", "stacksize": 1, "chance": 0.07499999999999996, "structure": "Trial Chambers", "container": "Ominous Vault" }

Breaking

A heavy core can be mined with any tool or by hand, but a pickaxe is the most effective. It always drops itself when mined.

Block
Hardness	10
Tool
Breaking time (sec)^[A]
Default	15
Wooden	7.5
Stone	3.75
Copper	3
Iron	2.5
Diamond	1.9
Netherite	1.7
Golden	1.25
Options
Efficiency	000
Haste	001 1JEBE

Legend

incorrect tool, drops nothing
correct tool, drops nothing or something other than the block itself
correct tool, drops the block itself
italicized can be instant mined

↑ These durations ignore other influential factors (e.g. Mining Fatigue), and are measured in seconds. For more information, see Breaking § Speed.

Usage

Crafting ingredient

Name	Ingredients	Crafting recipe
Mace	+ Breeze Rod

Note blocks

Heavy cores can be placed under note blocks to produce the "snare drum" sound.

Piston interactivity

In Bedrock Edition, just like glazed terracotta, heavy cores can be pushed by pistons but can't be pulled by sticky pistons. They also don't stick to slime blocks and honey blocks. In Java Edition, they can be both pushed and pulled by pistons. They also stick to slime blocks and honey blocks.

Sounds

Java Edition:

v t e `heavy_core` sound type
Sound	Subtitles	Source	Description	Resource location	Translation key	Volume	Pitch	Attenuation distance
	Block broken	Blocks	Once the block has broken	`block.heavy_core.break`	`subtitles.block.generic.break`	1.0	0.8	16
	Block placed	Blocks	When the block is placed	`block.heavy_core.place`	`subtitles.block.generic.place`	1.0	0.8	16
	Block breaking	Blocks	While the block is in the process of being broken	`block.heavy_core.hit`	`subtitles.block.generic.hit`	0.25	0.5	16
	Something falls on a block	Entity-Dependent	Falling on the block with fall damage	`block.heavy_core.fall`	`subtitles.block.generic.fall`	0.5	0.75	16
	Footsteps	Entity-Dependent	Walking on the block	`block.heavy_core.step`	`subtitles.block.generic.footsteps`	0.15	1.0	16

Bedrock Edition:

v t e `heavy_core` sound type
Sound	Source	Description	Resource location	Volume	Pitch
	Blocks	Once the block has broken	`break.heavy_core`	1.0	0.8
	Blocks	When the block is placed	`break.heavy_core`	1.0	0.8
	Players	While the block is in the process of being broken	`step.heavy_core`	1.0	0.5
	Players	Falling on the block with fall damage	`step.heavy_core`	1.0	1.0
	Players	Walking on the block	`step.heavy_core`	1.0	1.0
	Players	Jumping from the block	`step.heavy_core`	0.12	1.1
	Players	Falling on the block without fall damage	`step.heavy_core`	1.0	1.0

Data values

ID

Java Edition:

Name	Identifier	Form	Translation key
Heavy Core	`heavy_core`	Block & Item	`block.minecraft.heavy_core`

Bedrock Edition:

Name	Identifier	Numeric ID	Form	Item ID^{[i 1]}	Translation key
Heavy Core	`heavy_core`	`-316`	Block & Giveable Item^{[i 2]}	Identical^{[i 3]}	`tile.heavy_core.name`

↑ ID of block's direct item form, which is used in savegame files and addons.
↑ Available with /give command.
↑ The block's direct item form has the same ID as the block.

Block states

Java Edition:

Name	Default value	Allowed values	Description
waterlogged	`false`	`false` `true`	Whether or not there's water in the same place as this heavy core.

History

Java Edition
March 12, 2024		Heavy cores are teased in a screenshot posted on social media.
1.20.5 Experiment Update 1.21	24w11a	Added heavy cores.
	24w12a	Heavy cores can now be waterlogged.
		Heavy cores stop lava flow instead of being destroyed by it.
		Pushing a heavy core with a piston now moves the block, instead of popping it off.
		Increased the blast resistance of the heavy core to match obsidian.
		Mining a heavy core now takes 15 seconds, down from 45.
		Removed the unused `orientation` block state.
		Map color is now silver.
	24w13a	Heavy cores now are obtained from ominous vaults.
	24w14a	Heavy cores now has pickaxes as an appropriate tool.
1.21	24w18a	Heavy cores are now available without using the "Update 1.21" experimental data pack.
1.21	pre2	The rarity of heavy cores has been changed from "Common" to "Epic".
Bedrock Edition
1.20.80 Experiment Update 1.21	Preview 1.20.80.22	Added heavy cores.
1.21.0 Experiment Update 1.21	Preview 1.21.0.20	Pushing a heavy core with a piston now moves the block, instead of popping it off.
1.21.0 Experiment Update 1.21	Preview 1.21.0.20	The base color of heavy cores on maps is now `METAL`.
1.21.0	Preview 1.21.0.22	Heavy cores are now available without using the "Update 1.21" experimental toggle.
1.21.20	Preview 1.21.10.22	The rarity of heavy cores has been changed from "Common" to "Epic".
		Heavy cores in the inventory have been scaled to the size of a full block.
		Heavy cores are now centered in item frames.
1.21.50	Preview 1.21.50.20	Heavy cores are faster to mine without a pickaxe.
	Preview 1.21.50.20	A note block placed above a heavy core now plays the "snare drum" sound instead of the "harp" sound.
	Preview 1.21.50.24	Item texture of heavy cores has been changed.