Rock layers in TerraFirmaCraft, and the ores each rock holds

Every ore vein in TerraFirmaCraft replaces only certain rocks, so the rock under your feet decides which ores you can find there. TerraFirmaCraft has twenty rocks, and TerraFirmaGreg’s overworld keeps the same twenty and the same layers.

This guide lists the rocks with the veins each can hold, in both packs, then explains how the game stacks them, so you can tell from the ground you stand on what lies further down.

The twenty rocks and their veins

The category is the one TerraFirmaCraft gives each rock. A vein forms in a rock only if the rock is in the vein’s host list; the ore vein guides for TerraFirmaCraft and TerraFirmaGreg give each vein’s depth and rarity.

The twenty rocks, and the ore veins that can form in each
Rock	Category	TerraFirmaCraft 1.20 veins	TerraFirmaGreg 0.13.8 veins
Andesite	Intermediate igneous extrusive	Hematite (surface), Native Copper (surface), Native Gold, Opal, Pyrite (fool's gold), Sphalerite (surface)	Bismuth (surface), Bismuth Mountain (high), Coal (high), Cobaltite (surface), Copper & Gypsum, Copper & Iron (deep), Copper & Tin (deep), Galena, Gold, Gold (surface), Graphite (deep), Gypsum (high), Hematite (surface), Iron, Lead (high), Magnetite (deep), Magnetite & Olivine (deep), Mica, Mica (surface), Native Copper (surface), Quartz & Borax, Realgar (high), Salpeter (surface), Salt, Sphalerite (surface), Sulfides, Sulfur (deep), Sulfur (high), Tarkianite, Tetrahedrite (high), Tin (high)
Basalt	Mafic igneous extrusive	Hematite (surface), Native Copper (surface), Native Gold, Opal, Pyrite (fool's gold), Sphalerite (surface)	Amethyst, Bismuth (surface), Bismuth Mountain (high), Coal (high), Cobaltite (surface), Copper & Gypsum, Copper & Iron (deep), Copper & Tin (deep), Galena, Gold, Gold (surface), Graphite (deep), Gypsum (high), Hematite (surface), Iron, Lead (high), Magnetite (deep), Magnetite & Olivine (deep), Mica, Mica (surface), Native Copper (surface), Quartz & Borax, Realgar (high), Salpeter (surface), Salt, Sphalerite (surface), Sulfides, Sulfur (deep), Sulfur (high), Tarkianite, Tetrahedrite (high), Tin (high)
Chalk	Sedimentary	Amethyst, Bismuthinite (surface), Bituminous Coal, Gypsum, Halite, Lignite, Limonite (surface), Magnetite (surface), Malachite, Malachite (surface), Opal, Saltpeter	Banded Iron (deep), Bismuth (surface), Bismuth Mountain (high), Coal (high), Coal (surface), Copper, Copper & Gypsum, Dry Asbestos, Garnierite, Gypsum (high), Iron, Iron (deep), Lead (high), Limonite (surface), Magnetite (surface), Malachite (surface), Manganese (deep), Nickel (surface), Quartz, Realgar (high), Salt, Saltpeter (deep), Sphalerite, Spodumene, Sulfides, Sulfur (deep), Sulfur (high), Sylvite Salt (surface), Tetrahedrite (high), Tin (high), Tricalcium Phosphate (surface)
Chert	Sedimentary	Amethyst, Bismuthinite (surface), Bituminous Coal, Gypsum, Halite, Lignite, Limonite (surface), Magnetite (surface), Opal, Saltpeter, Sylvite	Banded Iron (deep), Bismuth (surface), Bismuth Mountain (high), Coal (high), Coal (surface), Copper, Copper & Gypsum, Dry Asbestos, Garnierite, Gypsum (high), Iron, Iron (deep), Lead (high), Limonite (surface), Magnetite (surface), Malachite (surface), Manganese (deep), Nickel (surface), Quartz, Realgar (high), Salt, Saltpeter (deep), Sphalerite, Spodumene, Sulfides, Sulfur (deep), Sulfur (high), Sylvite Salt (surface), Tetrahedrite (high), Tin (high), Tricalcium Phosphate (surface)
Claystone	Sedimentary	Amethyst, Bismuthinite (surface), Bituminous Coal, Borax, Gypsum, Halite, Lignite, Limonite (surface), Magnetite (surface), Opal, Saltpeter, Sylvite	Banded Iron (deep), Bismuth (surface), Bismuth Mountain (high), Coal (high), Coal (surface), Copper, Copper & Gypsum, Dry Asbestos, Garnierite, Gypsum (high), Iron, Iron (deep), Lead (high), Limonite (surface), Magnetite (surface), Malachite (surface), Manganese (deep), Nickel (surface), Quartz, Realgar (high), Salt, Saltpeter (deep), Sphalerite, Spodumene, Sulfides, Sulfur (deep), Sulfur (high), Sylvite Salt (surface), Tetrahedrite (high), Tin (high), Tricalcium Phosphate (surface)
Conglomerate	Sedimentary	Amethyst, Bismuthinite (surface), Bituminous Coal, Gypsum, Halite, Lignite, Limonite (surface), Magnetite (surface), Opal, Saltpeter	Banded Iron (deep), Bismuth (surface), Bismuth Mountain (high), Coal (high), Coal (surface), Copper, Copper & Gypsum, Dry Asbestos, Garnierite, Gypsum (high), Iron, Iron (deep), Lead (high), Limonite (surface), Magnetite (surface), Malachite (surface), Manganese (deep), Nickel (surface), Quartz, Realgar (high), Salt, Saltpeter (deep), Sphalerite, Spodumene, Sulfides, Sulfur (deep), Sulfur (high), Sylvite Salt (surface), Tetrahedrite (high), Tin (high), Tricalcium Phosphate (surface)
Dacite	Intermediate igneous extrusive	Hematite (surface), Native Copper (surface), Native Gold, Opal, Pyrite (fool's gold), Sphalerite (surface)	Bismuth (surface), Bismuth Mountain (high), Coal (high), Cobaltite (surface), Copper & Gypsum, Copper & Iron (deep), Copper & Tin (deep), Galena, Gold, Gold (surface), Graphite (deep), Gypsum (high), Hematite (surface), Iron, Lead (high), Magnetite (deep), Magnetite & Olivine (deep), Mica, Mica (surface), Native Copper (surface), Quartz & Borax, Realgar (high), Salpeter (surface), Salt, Sphalerite (surface), Sulfides, Sulfur (deep), Sulfur (high), Tarkianite, Tetrahedrite (high), Tin (high)
Diorite	Intermediate igneous intrusive	Bismuthinite, Cassiterite (surface), Cryolite, Emerald, Garnierite, Native Gold, Native Gold (rich), Native Silver, Native Silver (surface), Pyrite (fool's gold), Sphalerite, Sulfur	Amethyst, Apatite (deep), Bauxite (deep), Bismuth (deep), Bismuth Mountain (high), Coal (high), Copper, Copper & Gypsum, Copper & Iron (deep), Copper & Tin (deep), Galena, Galena (deep), Graphite (deep), Gypsum (high), Lead (high), Manganese (deep), Mica (surface), Molybdenum (deep), Nickel (deep), Realgar (high), Redstone (deep), Redstone (large vein) (deep), Salt, Sphalerite (surface), Sulfides, Sulfur (deep), Sulfur (high), Tetrahedrite (high), Tetrahedrite (surface), Thorianite (deep), Tin (high), Topaz (deep), Volcanic Graphite (deep)
Dolomite	Sedimentary	Amethyst, Bismuthinite (surface), Bituminous Coal, Gypsum, Halite, Lignite, Limonite (surface), Magnetite (surface), Malachite, Malachite (surface), Opal, Saltpeter	Banded Iron (deep), Bismuth (surface), Bismuth Mountain (high), Coal (high), Coal (surface), Copper, Copper & Gypsum, Dry Asbestos, Garnierite, Gypsum (high), Iron, Iron (deep), Lead (high), Limonite (surface), Magnetite (surface), Malachite (surface), Manganese (deep), Nickel (surface), Quartz, Realgar (high), Salt, Saltpeter (deep), Sphalerite, Spodumene, Sulfides, Sulfur (deep), Sulfur (high), Sylvite Salt (surface), Tetrahedrite (high), Tin (high), Tricalcium Phosphate (surface)
Gabbro	Mafic igneous intrusive	Bismuthinite, Cassiterite (surface), Diamond, Emerald, Garnierite, Garnierite (in gabbro), Native Gold, Native Gold (rich), Pyrite (fool's gold), Sphalerite, Sulfur	Apatite (deep), Bauxite (deep), Bismuth (deep), Bismuth Mountain (high), Coal (high), Copper, Copper & Gypsum, Copper & Iron (deep), Copper & Tin (deep), Galena, Galena (deep), Graphite (deep), Gypsum (high), Lead (high), Manganese (deep), Mica (surface), Molybdenum (deep), Nickel (deep), Realgar (high), Redstone (deep), Redstone (large vein) (deep), Salt, Sphalerite (surface), Sulfides, Sulfur (deep), Sulfur (high), Tetrahedrite (high), Tetrahedrite (surface), Thorianite (deep), Tin (high), Topaz (deep), Volcanic Graphite (deep)
Gneiss	Metamorphic	Amethyst, Cinnabar, Graphite, Native Silver, Sulfur, Tetrahedrite, Tetrahedrite (surface)	Asbestos (deep), Banded Iron (deep), Bismuth Mountain (high), Coal, Coal (high), Cobaltite (surface), Copper & Gypsum, Copper Sulfide (deep), Dry Asbestos, Gold, Graphite (deep), Gypsum (high), Iron (deep), Kyanite (deep), Lazurite & Calcite (deep), Lead (high), Magnetite (deep), Magnetite & Olivine (deep), Malachite (surface), Mica, Monazite (deep), Realgar (high), Salt, Saltpeter (deep), Sapphire (deep), Scheelite (deep), Sphalerite (deep), Spodumene, Sulfides, Sulfur (deep), Sulfur (high), Sylvite Salt (surface), Tantalite (deep), Tarkianite, Tetrahedrite (high), Tetrahedrite (surface), Tin (deep), Tin (high)
Granite	Felsic igneous intrusive	Bismuthinite, Cassiterite (surface), Cryolite, Emerald, Garnierite, Native Gold, Native Gold (rich), Native Silver, Native Silver (surface), Pyrite (fool's gold), Sphalerite, Sulfur	Amethyst, Apatite (deep), Bauxite (deep), Bismuth (deep), Bismuth Mountain (high), Coal (high), Copper, Copper & Gypsum, Copper & Iron (deep), Copper & Tin (deep), Galena, Galena (deep), Graphite (deep), Gypsum (high), Lead (high), Manganese (deep), Mica (surface), Molybdenum (deep), Nickel (deep), Realgar (high), Redstone (deep), Redstone (large vein) (deep), Salt, Sphalerite (surface), Sulfides, Sulfur (deep), Sulfur (high), Tetrahedrite (high), Tetrahedrite (surface), Thorianite (deep), Tin (high), Topaz (deep), Volcanic Graphite (deep)
Limestone	Sedimentary	Amethyst, Bismuthinite (surface), Bituminous Coal, Borax, Gypsum, Halite, Lapis Lazuli, Lignite, Limonite (surface), Magnetite (surface), Malachite, Malachite (surface), Opal, Saltpeter	Banded Iron (deep), Bismuth (surface), Bismuth Mountain (high), Coal (high), Coal (surface), Copper, Copper & Gypsum, Dry Asbestos, Garnierite, Gypsum (high), Iron, Iron (deep), Lead (high), Limonite (surface), Magnetite (surface), Malachite (surface), Manganese (deep), Nickel (surface), Quartz, Realgar (high), Salt, Saltpeter (deep), Sphalerite, Spodumene, Sulfides, Sulfur (deep), Sulfur (high), Sylvite Salt (surface), Tetrahedrite (high), Tin (high), Tricalcium Phosphate (surface)
Marble	Metamorphic	Amethyst, Graphite, Lapis Lazuli, Malachite, Malachite (surface), Sulfur, Tetrahedrite, Tetrahedrite (surface)	Asbestos (deep), Banded Iron (deep), Bismuth Mountain (high), Coal, Coal (high), Cobaltite (surface), Copper & Gypsum, Copper Sulfide (deep), Dry Asbestos, Gold, Graphite (deep), Gypsum (high), Iron (deep), Kyanite (deep), Lazurite & Calcite (deep), Lead (high), Magnetite (deep), Magnetite & Olivine (deep), Malachite (surface), Mica, Monazite (deep), Realgar (high), Salt, Saltpeter (deep), Sapphire (deep), Scheelite (deep), Sphalerite (deep), Spodumene, Sulfides, Sulfur (deep), Sulfur (high), Sylvite Salt (surface), Tantalite (deep), Tarkianite, Tetrahedrite (high), Tetrahedrite (surface), Tin (deep), Tin (high)
Phyllite	Metamorphic	Amethyst, Cinnabar, Sulfur, Tetrahedrite, Tetrahedrite (surface)	Asbestos (deep), Banded Iron (deep), Bismuth Mountain (high), Coal, Coal (high), Cobaltite (surface), Copper & Gypsum, Copper Sulfide (deep), Dry Asbestos, Gold, Graphite (deep), Gypsum (high), Iron (deep), Kyanite (deep), Lazurite & Calcite (deep), Lead (high), Magnetite (deep), Magnetite & Olivine (deep), Malachite (surface), Mica, Monazite (deep), Realgar (high), Salt, Saltpeter (deep), Sapphire (deep), Scheelite (deep), Sphalerite (deep), Spodumene, Sulfides, Sulfur (deep), Sulfur (high), Sylvite Salt (surface), Tantalite (deep), Tarkianite, Tetrahedrite (high), Tetrahedrite (surface), Tin (deep), Tin (high)
Quartzite	Metamorphic	Amethyst, Cinnabar, Graphite, Sulfur, Tetrahedrite, Tetrahedrite (surface)	Asbestos (deep), Banded Iron (deep), Bismuth Mountain (high), Coal, Coal (high), Cobaltite (surface), Copper & Gypsum, Copper Sulfide (deep), Dry Asbestos, Gold, Graphite (deep), Gypsum (high), Iron (deep), Kyanite (deep), Lazurite & Calcite (deep), Lead (high), Magnetite (deep), Magnetite & Olivine (deep), Malachite (surface), Mica, Monazite (deep), Realgar (high), Salt, Saltpeter (deep), Sapphire (deep), Scheelite (deep), Sphalerite (deep), Spodumene, Sulfides, Sulfur (deep), Sulfur (high), Sylvite Salt (surface), Tantalite (deep), Tarkianite, Tetrahedrite (high), Tetrahedrite (surface), Tin (deep), Tin (high)
Rhyolite	Felsic igneous extrusive	Hematite (surface), Native Copper (surface), Native Gold, Opal, Pyrite (fool's gold), Sphalerite (surface)	Amethyst, Bismuth (surface), Bismuth Mountain (high), Coal (high), Cobaltite (surface), Copper & Gypsum, Copper & Iron (deep), Copper & Tin (deep), Galena, Gold, Gold (surface), Graphite (deep), Gypsum (high), Hematite (surface), Iron, Lead (high), Magnetite (deep), Magnetite & Olivine (deep), Mica, Mica (surface), Native Copper (surface), Quartz & Borax, Realgar (high), Salpeter (surface), Salt, Sphalerite (surface), Sulfides, Sulfur (deep), Sulfur (high), Tarkianite, Tetrahedrite (high), Tin (high)
Schist	Metamorphic	Amethyst, Cinnabar, Graphite, Native Silver, Sulfur, Tetrahedrite, Tetrahedrite (surface)	Asbestos (deep), Banded Iron (deep), Bismuth Mountain (high), Coal, Coal (high), Cobaltite (surface), Copper & Gypsum, Copper Sulfide (deep), Dry Asbestos, Gold, Graphite (deep), Gypsum (high), Iron (deep), Kyanite (deep), Lazurite & Calcite (deep), Lead (high), Magnetite (deep), Magnetite & Olivine (deep), Malachite (surface), Mica, Monazite (deep), Realgar (high), Salt, Saltpeter (deep), Sapphire (deep), Scheelite (deep), Sphalerite (deep), Spodumene, Sulfides, Sulfur (deep), Sulfur (high), Sylvite Salt (surface), Tantalite (deep), Tarkianite, Tetrahedrite (high), Tetrahedrite (surface), Tin (deep), Tin (high)
Shale	Sedimentary	Amethyst, Bismuthinite (surface), Bituminous Coal, Borax, Gypsum, Halite, Lignite, Limonite (surface), Magnetite (surface), Opal, Saltpeter, Sylvite	Banded Iron (deep), Bismuth (surface), Bismuth Mountain (high), Coal (high), Coal (surface), Copper, Copper & Gypsum, Dry Asbestos, Garnierite, Gypsum (high), Iron, Iron (deep), Lead (high), Limonite (surface), Magnetite (surface), Malachite (surface), Manganese (deep), Nickel (surface), Quartz, Realgar (high), Salt, Saltpeter (deep), Sphalerite, Spodumene, Sulfides, Sulfur (deep), Sulfur (high), Sylvite Salt (surface), Tetrahedrite (high), Tin (high), Tricalcium Phosphate (surface)
Slate	Metamorphic	Amethyst, Sulfur, Tetrahedrite, Tetrahedrite (surface)	Asbestos (deep), Banded Iron (deep), Bismuth Mountain (high), Coal, Coal (high), Cobaltite (surface), Copper & Gypsum, Copper Sulfide (deep), Dry Asbestos, Gold, Graphite (deep), Gypsum (high), Iron (deep), Kyanite (deep), Lazurite & Calcite (deep), Lead (high), Magnetite (deep), Magnetite & Olivine (deep), Malachite (surface), Mica, Monazite (deep), Realgar (high), Salt, Saltpeter (deep), Sapphire (deep), Scheelite (deep), Sphalerite (deep), Spodumene, Sulfides, Sulfur (deep), Sulfur (high), Sylvite Salt (surface), Tantalite (deep), Tarkianite, Tetrahedrite (high), Tetrahedrite (surface), Tin (deep), Tin (high)

Some TerraFirmaGreg veins also list vanilla tuff and basalt among their hosts. Those rocks are not part of TerraFirmaCraft’s layers, so they are not in this table.

How the layers stack

Underground, the rock comes in layers, and the game decides an area’s layers in two steps. First the area gets one of four kinds, from what is around it:

Where each kind of area starts its stack
Area	Where it is	Top layer, one of
Ocean floor	Under the sea.	Igneous extrusive
Volcanic	Near volcanic islands; in TerraFirmaGreg, also near its volcanic hot spots.	Igneous extrusive and Igneous extrusive, doubled
Uplift	Near mountains, inland and on the coast.	Sedimentary and Uplift
Land	Everywhere else on land.	Igneous extrusive and Sedimentary

Then the game picks the top layer from that kind’s list, and a rock from the layer. Each rock names the layer that lies under it, and the stack continues down until it reaches the bottom layer: Gneiss, Schist, Diorite, Granite and Gabbro. The probe on the seed map shows the top, middle and bottom rock for any spot.

Each layer, the rocks it can hold, and the layer under each rock
Layer	Rock	Next layer down
Felsic	Granite	Bottom
Intermediate	Diorite	Bottom
Mafic	Gabbro	Bottom
Igneous extrusive	Rhyolite	Felsic
Igneous extrusive	Andesite	Intermediate
Igneous extrusive	Dacite	Intermediate
Igneous extrusive	Basalt	Mafic
Igneous extrusive, doubled	Rhyolite	Igneous extrusive
Igneous extrusive, doubled	Andesite	Igneous extrusive
Igneous extrusive, doubled	Dacite	Igneous extrusive
Igneous extrusive, doubled	Basalt	Igneous extrusive
Phyllite	Phyllite	Bottom
Phyllite	Gneiss	Bottom
Phyllite	Schist	Bottom
Slate	Slate	Bottom
Slate	Phyllite	Phyllite
Marble	Marble	Bottom
Quartzite	Quartzite	Bottom
Sedimentary	Shale	Slate
Sedimentary	Claystone	Slate
Sedimentary	Conglomerate	Slate
Sedimentary	Limestone	Marble
Sedimentary	Dolomite	Marble
Sedimentary	Chalk	Marble
Sedimentary	Chert	Quartzite
Uplift	Slate	Phyllite
Uplift	Marble	Bottom
Uplift	Quartzite	Bottom
Uplift	Diorite	Sedimentary
Uplift	Granite	Sedimentary
Uplift	Gabbro	Sedimentary
Bottom	Gneiss, Schist, Diorite, Granite and Gabbro	None

Reading the ground

Sedimentary rock at the top sits over metamorphic rock: shale, claystone and conglomerate over slate, limestone, dolomite and chalk over marble, and chert over quartzite.
Extrusive igneous rock at the top sits over its intrusive partner: rhyolite over granite, andesite and dacite over diorite, and basalt over gabbro.
Near mountains the order can turn over: in an uplift area, granite, diorite and gabbro can sit on top of sedimentary rock.
The bottom layer is the same everywhere: Gneiss, Schist, Diorite, Granite and Gabbro.

Values on this page are read at build time from the same game data the map and the forge calculator use. Found a mistake? Open an issue.

NOT AN OFFICIAL MINECRAFT SERVICE. NOT APPROVED BY OR ASSOCIATED WITH MOJANG OR MICROSOFT.