Enter this guide by [Mithuna] from Looking Glass Universe, where she circles back on the concept of measurement basis in quantum mechanics using a rather simple piece of calcite crystal.

Calcite is a block that has been in Minecraft since the 1.17 Caves & Cliffs update. During this time, it has found its special place within the infinite world. Primarily used as a decorative block ...

Where is Calcite found in Minecraft? Currently, the only way players can obtain Calcite in Minecraft is to find a geode inside an underground cave system. These geodes contain amethyst crystals ...

In general, a mineral’s strength isn’t uniform in all directions. So pushing on calcite in some directions is more likely to break it than force from other directions.

A paper on the study, "Visualizing the Internal Nanocrystallinity of Calcite Due to Nonclassical Crystallization by 3D Coherent X-Ray Diffraction Imaging," appears in Advanced Materials. Thus far ...