Vein

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Mineral vein
Mineral vein.png

A mineral vein, ore vein, lode, seam, pocket, or blob is a terrain feature consisting of a natural deposit of ores or other blocks in the ground.

List[edit]

Dimension Block Can replace[note 1]
Overworld Andesite

Clay
Coal Ore
Diamond Ore
Diorite
Dirt
Gold Ore
Granite
Gravel
Infested Stone
Iron Ore
Copper Ore
Lapis Lazuli Ore
Redstone Ore
Tuff

Andesite

Diorite
Granite
Polished Andesite
Polished Diorite
Polished Granite
Stone

Emerald Ore Stone

[more information needed]

Nether Ancient Debris
Basalt

Blackstone
Netherrack

Blackstone

Gravel
Nether Gold Ore
Nether Quartz Ore
Magma Block
Soul Sand

Netherrack

[more information needed]

The Overworld[edit]

This section is missing information about generation of emerald ore (see here), does this match up with the values provided on the table below?. 
Please expand the section to include this information. Further details may exist on the talk page.
Block Spawn size Spawn tries Minimum height Maximum height Biomes
Dirt 33 10 0 255 All
Gravel 33 8 0 255 All
Granite 33 10 0 79 All
Diorite 33 10 0 79 All
Andesite 33 10 0 79 All
Coal Ore 17 20 0 127 All
Iron Ore 9 20 0 63 All
Copper Ore 9 20 0 63 All
Redstone Ore 8 8 0 15 All
Lapis Lazuli Ore 7 1 0[note 2] 30[note 2] All
Gold Ore 9 2 0 31 All
Diamond Ore 10 1 0 15 All
Emerald Ore 1 11 4 31 Gravelly Mountains
Gravelly Mountains+
Mountains
Mountain Edge
Wooded Mountains
Gold Ore[note 3] 9 20 32 79 Badlands
Badlands Plateau
Eroded Badlands
Modified Badlands Plateau
Modified Wooded Badlands Plateau
Wooded Badlands Plateau
Infested Stone 9 7 0 63 Gravelly Mountains
Gravelly Mountains+
Mountains
Mountain Edge
Wooded Mountains

The Nether[edit]

This section is missing information about Java Edition patches, do they match Bedrock; 20w21a basalt deltas changes; does soul sand truly generate as a mineral vein? apparently it doesn't show up in the same region of code}. 
Please expand the section to include this information. Further details may exist on the talk page.
Block Spawn size Spawn tries Minimum height Maximum height Biomes
Magma Block 33 4 27 36 All
Nether Quartz Ore 14 16 10 117 All
Nether Gold Ore
10 10 10 117 All
Ancient Debris[note 4] 3 1 8[note 2] 22[note 2] All
Ancient Debris[note 4] 2 1 8 119 All
Soul Sand
[check the code]
12 12 1 32 Soul Sand Valley
Gravel
[check the code]
33 2 1 32 Nether Wastes

Crimson Forest
Warped Forest
Soul Sand Valley

Blackstone
33 2 1 32 Nether Wastes

Crimson Forest
Warped Forest
Soul Sand Valley
Basalt Deltas

  1. can replace the same type block, if the replaced block aren't part of the said vein.
  2. a b c d This distribution follows its own rules: instead of a minimum and a maximum height, it is based on a center height and a spread value. By default, these values are set to 16 and 16 for Lapis Lazuli and 8 and 16 for Ancient Debris. Meaning that Lapis Lazuli and Ancient Debris generate mostly around level 15; i.e. a periodic gaussian distribution.
  3. This is the extra rolls for gold ore in badlands biomes.
  4. a b Ancient Debris can generate in 2 different ways.

Generation[edit]

Players can come across these veins in caverns or anywhere where there is natural stone. Underground deposits of dirt and gravel are generated in this step, followed by the more precious ores: coal, iron, gold, redstone, diamond, emerald (in mountains biomes) and lapis lazuli. They can form only in stone, andesite, diorite and granite (also in their polished variants, replacing parts of structures), and do not replace each other or any other block. Note that two or more mineral veins can form next to each other and make it look like a mineral vein made of more than one material.

Data values[edit]

ID[edit]

NameNamespaced ID
[No displayed name]ore

History[edit]

This section is missing information about other editions' information, all the 1.13 changes and 21w08a tuff and 21w10a lush caves clay mineral vein generation and details. 
Please expand the section to include this information. Further details may exist on the talk page.
Java Edition Infdev
Minecraft Infdev20100325Mineral vein generation is implemented.
20100617-2Added underground veins of dirt and gravel.
Java Edition Alpha
v1.0.1Added veins of redstone ore
Java Edition Beta
1.2Added veins of lapis lazuli ore
1.6Test Build 3Fixed ore density varying per quadrant from the center of the world.
1.8Pre-releaseThe highest layer for some ores has been lowered by 2.
Java Edition
1.3.112w21aAdded veins of emerald ore to then-Extreme Hills and Extreme Hills Edge biomes.
12w22aEmerald ore now generates as single blocks.
?Stone monster eggs now generate in veins.
1.513w01aAdded veins of nether quartz ore to the Nether.
1.814w02aAdded veins of granite, diorite and andesite to overworld generation.
14w17aAdded custom worlds allowing for ore customisation.
14w29aOre now generates faster.
1.1016w20aAdded magma block veins to the Nether. Whether they generated differently upon introduction and were changed later is unknown.
Added extra gold ore veins to then-Mesa and related biomes.
1.1620w06aAdded ancient debris, which generates in the Nether in two different vein specifications.
20w11aAdded nether gold ore to the Nether.
20w19aAdded veins of blackstone and gravel to Nether Wastes, Soul Sand Valley, Crimson Forest and Warped Forest biomes.
Added underground soul sand veins to the soul sand valley.
Basalt and blackstone can be replaced by nether ores, like with netherrack.[is this the correct version?]
1.16.220w28aNo longer use 32-bit floats for generation, which used to cause a crash when using mods to generate terrain between 67,108,864 and 134,217,728 blocks.
Upcoming Java Edition
October 3, 2020Announced copper ore, which generates in a different vein type from all other ores.
1.1721w06aThe height limit was expanded down to -64. All ores are temporary generating from Y-64 instead of Y0 [needs testing]
21w07aOre distribution has changed
21w08aOre distribution has changed once again
Iron Ore isn't generating
21w08bIron Ore is generating once more
21w10aOre distribution has changed 3rd time

Gallery[edit]

References[edit]