Desert Fossil

Type	BlockCrafting material
Placeable	✓ (1 wide × 1 high)
Use time	15 (Very fast)
Rarity
Research	200 required

This article is about the naturally occurring block. For the crafting material, see Sturdy Fossil.

Desert Fossil is a type of block found in the Underground Desert biome in medium to large veins. Desert Fossils can be used with an Extractinator to produce Sturdy Fossils, along with regular Extractinator drops.

On Desktop and Mobile, Desert Fossil can be mined with a Copper Pickaxe or equivalent/higher mining level, or with explosives. However, adjacent fossil blocks have a chance to crumble away and drop nothing. On Console, mining it requires either a Nightmare or Deathbringer Pickaxe or higher.

Breaking [edit | edit source]

On the Desktop version and Mobile version, Desert Fossils will occasionally break adjacent tiles when they are mined (either while being broken, or once broken).
By default, there is a 6.67*1/15 (6.67%) chance for a block in any of the 8 surrounding tiles to be destroyed. Of these 8 tiles, if any of them has no block below, they will have a 25*1/4 (25%) chance to be destroyed. The tick the original fossil is broken, the block above also has a 25*1/4 (25%) chance to break.
To get as many fossils as possible, players should try to mine horizontally from top to bottom and avoid creating holes, which can otherwise spread quickly.

Crafting[edit | edit source]

Recipes[edit | edit source]

Result	Ingredients	Crafting station
Desert Fossil ( )	Desert Fossil Wall (4)	Work Bench and Ecto Mist

Used in[edit | edit source]

Result	Ingredients	Crafting station
Desert Fossil Wall (4) ( )	Desert Fossil	Work Bench and Ecto Mist

Extractinator items[edit | edit source]

With **Desert Fossil**
Item	Chance	Quantity	Average	Yield/1000
Sturdy Fossil	10%	1–7	1.3	130
Platinum Coin	0.0066%	1–11	1.2758	0.08 (8)
Gold Coin	0.0915%	1–100	10.3345	9.46 (946)
Silver Coin	1.2178%	1–100	17.7839	216.57 (217)
Copper Coin	57.7876%	1–100	26.892	15540.24 (155)
Amber Mosquito	0.027%	1	1	0.27
Amethyst	0.15%	1–16	1.1775	1.77
Topaz	0.15%	1–16	1.1775	1.77
Sapphire	0.15%	1–16	1.1775	1.77
Emerald	0.15%	1–16	1.1775	1.77
Ruby	0.15%	1–16	1.1775	1.77
Diamond	0.15%	1–16	1.1775	1.77
Amber	1.7629%	1–16	1.1775	20.76
Copper Ore	3.5259%	1–16	1.1775	41.52
Tin Ore	3.5259%	1–16	1.1775	41.52
Iron Ore	3.5259%	1–16	1.1775	41.52
Lead Ore	3.5259%	1–16	1.1775	41.52
Silver Ore	3.5259%	1–16	1.1775	41.52
Tungsten Ore	3.5259%	1–16	1.1775	41.52
Gold Ore	3.5259%	1–16	1.1775	41.52
Platinum Ore	3.5259%	1–16	1.1775	41.52

Notes[edit | edit source]

Desert Fossils appear highlighted under the effects of a Spelunker Potion. This does not apply to the Switch version.

Tips[edit | edit source]

As explosives break Desert Fossil instantly, early-game players may want to use them instead, to prevent weaker pickaxes from damaging the surrounding Desert Fossil during mining.

History[edit | edit source]

Desktop version

Desktop 1.4.0.1:
- Can now be mined with any pickaxe.
- Can now be destroyed and collected using explosives.
- Adjacent Desert Fossil blocks now have a chance to break when one is mined.
- Now drops Amber more commonly when put through Extractinator
- Added crafting recipes for Desert Fossil Walls.