Decor and furniture
Potassium Nitrate Ore Boulder
Ore boulders appear on the terrain when an ore deposits exists close to the surface.
Harvest drops
Nitrate Powder× 50
Small Stone× 14
Taken apart with a harvesting tool (axe, pickaxe, shovel), before perks and tool bonuses.
Where to find (3 POIs)
Hybrid Mining (tier 5), Aranea Caverns (tier 4), Navezgane Public Library.
Points of interest built with this block (any of its variants), the highest tiers first, from the game's prefab files.