What combination creates a quantum shale in Little Alchemy 2?

In Little Alchemy 2, Quantum Shale is a hidden element that can be created through a specific combination. HereÔÇÖs how you can make it:

1. Create Stone: Combine Earth + Fire to make Lava, then combine Lava + Air to make Stone.
2. Create Philosophy: Combine Human + Idea to make Philosophy.
3. Create Science: Combine Human + Telescope or Human + Microscope to make Science.
4. Create Quantum Physics: Combine Science + Philosophy to make Quantum Physics.
5. Create Quantum Shale: Finally, combine Stone + Quantum Physics to make Quantum Shale.

This combination is part of the game's more advanced and hidden recipes, so it might not be immediately obvious. Let me know if you need further clarification!