Rock

The entries on this annotated, structured list of rocks all are items and blocks in Minecraft that: A few fictitious blocks are included in this list; namely, blackstone, deepslate, end stone, glowstone, netherrack, and redstone. Their actual nature is up to the player's imagination.
 * 1) bear a resemblance to real-world rocks,
 * 2) share a name with real-world rocks, or
 * 3) are fictitious but fulfill a similar role to rocks.

The first list here approaches the items as game elements, intended to be useful. The second iteration of this list provides real-world geologic analogies.

Regional rocks
These make up the majority of the ground where they're found.
 * – columnar basalt found making up the basalt delta biomes of the Nether
 * – the unbreakable layer of rock that limits mining below the deepslate layer; also sandwiches the Nether; unobtainable in survival
 * – the dark gray rock that makes up the deepest mineable layer of the Overworld, below Y=0; useful for crafting
 * – a hard, pale yellow material that makes up all the islands of the End
 * – a soft, red material that makes up most of the Nether
 * – a light-colored rock found below almost any sand deposit
 * – the gray rock that makes up the bulk of the Overworld above Y=−7
 * – a stone found in colorful, exposed layers in the mesa; craftable by cooking clay in a furnace

Blob rocks
These generate in discrete patches called blobs.
 * – a light-colored rock found in solitary underground blobs
 * – a material only found in large blobs in the Nether's basalt deltas; useful for crafting
 * – a dark gray rock sometimes found in blobs close to the deepslate layer (where it comprises the majority of rock found)
 * – a light-colored rock, similar in color to andesite but coarser-looking; found in solitary underground blobs
 * – a brittle, glowing material only found hanging from ceilings in the Nether
 * – a pinkish rock found in solitary underground blobs and copper veins
 * – a brownish rock commonly found in solitary underground blobs and iron veins within the deepslate layer

Ore rocks

 * For ore minerals (as opposed to ore rocks), see copper, iron, gold, emerald, and diamond.

These rock types are sourced from a particular kind of blob called an ore.
 * – a mineable resource used for Torches and Furnace fuel; found in greatest abundance at the surface
 * – a rich blue rock useful in enchanting and as a dye; found close to and within the deepslate layer
 * – a material that can carry signals and activate moving parts; found in the deepest depths of the underground

Structure rocks
These rocks generate in structures.
 * – forms s and the of the End
 * – columnar basalt found in the s and s of the Nether
 * – generates in a variety of structures, including s and s
 * – found in s; useful for generating water or lava
 * – a superhard rock that makes up the Ender Dragon's s
 * – encases s; associated with calcite and amethyst

Other rocks

 * – a block of cobbles that drops from mining stone; found naturally where flowing water meets flowing lava; useful for crafting
 * – a rock that drops from gravel; useful in crafting
 * – a hard black blast-proof rock found where lava is flash-cooled by water; useful for enchanting and traveling to the Nether

Geologic list of rocks
This annotated list of rocks is intended to help players understand the supposed geologic story associated with their worlds, as told by its rocks.

Igneous rocks
These rocks are associated with volcanic activity.
 * – a light-colored volcanic rock, made of very fine crystals; was once part of a lava flow from a volcano
 * – a dark column-forming volcanic rock; was once part of a giant lava flow
 * – a dark-colored volcanic rock made of very fine crystals; found encasing amethyst geodes; was once part of a moderately sized lava flow
 * – a light-colored igneous rock, made of coarse crystals; was once part of an underground magma chamber or dike
 * – a pinkish igneous rock, made of coarse crystals; was once part of an underground magma chamber or dike
 * – a superhard black volcanic glass; found naturally where lava is flash-cooled by water
 * – volcanic ash turned stone; common in the deepest layers of the world; originally deposited at the surface where it erupted out of a volcano

Sedimentary rocks
These rocks are associated with the flow of wind and water moving sediments around the world. Sediments tend to get deposited in low-lying spots and buried, which turns them into rock.
 * – a block of cobbles cemented together; found where rapid rivers and debris flows have been buried; exposed only in old growth taigas in Minecraft
 * – remains of ancient swamplife that was buried and turned into pure carbon
 * – the stalactites, stalagmites, and flowstones of dripstone caves; formed where downward-moving groundwater dissolves limestone and recrystallizes it in peculiar formations
 * – a sharp, flakey rock, sometimes found as nodules in gravel
 * – sand turned rock; found in buried rivers, beaches, and deserts; turns red when it has lots of oxidized iron in it
 * – the gray rock that makes up the bulk of the Overworld; probably a mudstone, as it appears laminated and evidently turns into slate when buried
 * – clay turned into stone, found exposed in colorful layers in the mesa
 * – [categorized as igneous and sedimentary (volcaniclastic)] volcanic ash turned stone; common in the deepest layers of the world; originally deposited at the surface where it erupted out of a volcano''

Metamorphic rocks
These rocks are associated with crystal alteration of some kind. This can be from hot groundwater, deep burial, or the heat of a nearby magma source.
 * – a large, round cavity found underground with crystals growing from its walls; formed where hot groundwater has seeped into the gas cavities of a buried lava flow, the water leaving calcite and amethyst crystals behind in the empty space
 * – the umbreakable layer of dark gray rock buried below deepslate; actually of an unknown rock type, but plausibly a kind of schist
 * – the platy, dark gray rock that makes up the deepest mineable layer of the underground; formed when mudstones are buried to great depths and becomes easily cleaved into platy sheets
 * – a rich blue rock; on Earth formed where magma has alterred limestone or marble; in Minecraft, an ore with reduced air exposure, found close to and within the deepslate layer

Fantasy rocks
These rocks bear creative names, and their nature is really up to the player's imagination.
 * – a material that's in the Nether's basalt deltas and isn't basalt
 * – a hard, pale yellow material that makes up the bulk of the End
 * – a brittle, luminescent material that hangs in branching structures from ceilings in the Nether
 * – the soft, red material that makes up the bulk of the Nether
 * – a material that can carry signals and activate moving parts, found in the depths of the Overworld