Limestone

Limestone
Used for crafting. Basic resource mainly used for stable foundations.
Unlocked at	Tier 0 - HUB Upgrade 3
Stack Size	100
Sink Value	2
Blueprint Path /Game/FactoryGame/Resource/RawResources/Stone/Desc_Stone.Desc_Stone_C

Limestone is a basic type of ore which is abundant in the world. It is primarily used to produce Concrete, an essential material in factory construction.

Obtaining

Resource acquisition

Limestone can be harvested by hand (default E) in trace amounts from resource deposits scattered across the world, or from inexhaustible resource nodes on which Miners can be constructed to extract automatically. Additonally, Lizard Doggos will ocassionally bring it when tamed.

Items produced per minute

	Miner Mk.1	Miner Mk.2	Miner Mk.3
Impure	30	60	120
Normal	60	120	240
Pure	120	240	480

	Miner Mk.1	Miner Mk.2	Miner Mk.3
Impure	75	150	300
Normal	150	300	600
Pure	300	600	780

Number of Limestone resource nodes is as follows:

Node purity	Number of nodes	Mk.3 mining rate	Mk.3 mining rate at 250 %
Impure	12	1440	3600
Normal	47	11280	28200
Pure	27	12960	32400
Total	86	25680	52860* / 64200

^*Note: The extraction rate of a Miner Mk.3 at 250 % is 1200/min, but a Mk.5 Conveyor can only carry 780/min, therefore the maximum mined amount cannot be transported.

Usage

Used to craft

Recipe	Ingredients												Building	Products		Prerequisites
Concrete	3 × Limestone 45 / min												Constructor 4 sec × 2	1 × Concrete 15 / min 16 MJ / item		Tier 0 - HUB Upgrade 3
Rubber Concrete Alternate	10 × Limestone 50 / min						2 × Rubber 10 / min						Assembler 12 sec	9 × Concrete 45 / min 20 MJ / item		Tier 5 - Oil Processing
Wet Concrete Alternate	6 × Limestone 120 / min						5 × Water 100 / min						Refinery 3 sec	4 × Concrete 80 / min 22.5 MJ / item		Tier 3 - Coal Power Tier 5 - Oil Processing
Fine Concrete Alternate	3 × Silica 7.5 / min						12 × Limestone 30 / min						Assembler 24 sec	10 × Concrete 25 / min 36 MJ / item		Quartz Research - Quartz Tier 2 - Part Assembly
Cheap Silica Alternate	3 × Raw Quartz 11.25 / min						5 × Limestone 18.75 / min						Assembler 16 sec	7 × Silica 26.25 / min 34.29 MJ / item		Quartz Research - Silica Tier 2 - Part Assembly

AWESOME Sink

 Limestone can be sunk into the AWESOME Sink to yield 2 points.

Tips

• Later in the game, it can be used to improve Silica production.

Gallery

• 

  Hand-mining Limestone

• 

  A limestone node in the Grass Fields

History

• Patch 0.3.4.7: New mesh and icon introduced
• Patch 0.2.1.19: New mesh and icon introduced
• Patch Closed Alpha 4: Renamed Stone to Limestone