Magnetic Caves: Ores and Machinery Guide
The Magnetic Caves are one of six rare cave biomes added by Alex's Caves. This guide details the unique ores and machinery found within this biome.
Locating the Magnetic Caves
The Magnetic Caves biome, known as a Ferrocave, generates in the Overworld. The game attempts to place one Ferrocave within every 6x6 chunk region, ensuring each is at least 3 chunks apart from others. To begin your search for any cave biome, locate an Underground Cabin in the Overworld. These cabins contain loot barrels with cave tablets and a Cave Compendium, which provides information on finding and exploring the mod's biomes.
Neodymium Ores and Ingots
The Magnetic Caves are a source of two distinct neodymium types: Scarlet Neodymium and Azure Neodymium. These raw materials are essential for crafting advanced machinery.
Scarlet Neodymium Ingot can be obtained through two crafting methods:
- Combine 3
Raw Scarlet Neodymium with 3 
Iron Ingot. - Craft directly from a
Block of Scarlet Neodymium.
Azure Neodymium Ingot can also be obtained through two crafting methods:
- Combine 3
Raw Azure Neodymium with 3 Iron Ingot. - Craft directly from a
Block of Azure Neodymium.
Magnetic Machinery
The neodymium ingots are used to create specialized magnetic machinery.
Magnetic Quarry
The 
Magnetic Quarry is crafted using:
- 4
Scrap Metal Plate - 2
Diamond - 2 Azure Neodymium Ingot
- 1
Heart of Iron
Magnetic Quarry Smasher
The 
Magnetic Quarry Smasher requires the following components:
Chain
HeavyweightMagnetic Levitation Rail
For transportation, the 
Magnetic Levitation Rail is crafted with:
- 6 Iron Ingot
- 2 Azure Neodymium Ingot
- 1 Wooden Rod
Smelting the magnetic ores
The metal in these caves goes through a blast furnace like any other ore, and the recipes are worth knowing before you start hauling:
Galena Iron Ore blasts into an Iron Ingot
Packed Galena blasts into an 
Iron Nugget
Metal Swarf blasts into 
Scrap Metal
The packed variant giving only a nugget is the trap. It looks like the richer block and is not, so break the ore rather than the packed stone when you have a choice.
Metal Swarf is the one people leave on the floor. It is a by-product rather than an ore, and turning it into Scrap Metal costs nothing but furnace time — collect it as you go instead of walking past it.
Finding the biome
The magnetic caves are an underground biome, so they are reached by caving rather than by surface search. The mod's structures largely generate in the underground-structures step for the same reason; Ferrocave sits at spacing 6, which makes it one of the more common things to meet down here.
Working order
Mine the ore first and process at home. Blasting is faster than smelting for every one of these recipes, and since the ores stack normally there is no reason to carry a furnace into the cave — the only thing worth processing on site is nothing at all.
Covers the mod’s in-game guide topics: Scarlet Neodymium Ingot Azure Neodymium Ingot Magnetic Quarry Magnetic Quarry Smasher Magnetic Levitation Rail Ferrocave
Cave Compendium