Minecraft wiki entry for Lapis_Lazuli_Ore, associated text: In Bedrock Edition, Lapis lazuli ore generates in two batches per chunk. The first batch attempts to generate 2 times per chunk, in blobs of 0-10, from levels -32 to 32. It is most common around level 0 and becomes less common towards either end of the range. The second batch attempts to generate 4 times per chunk, in blobs of 0-10, evenly from levels -64 to 64. Lapis lazuli ore in this second batch cannot be exposed to air; any ore blocks that would generate exposed do not generate. Lapis lazuli ore can replace stone, granite, diorite, andesite, and deepslate. If it replaces deepslate, it will become deepslate lapis lazuli ore.