Amethyst crystals generate on non-amethyst blocks

Rarely, amethyst crystals will spawn in generation without its source, the amethyst geode. Im reporting this so generation can be improved in later snapshots. For the image below, I went into spectator mode. No geode was found. This can be reproduced without the caves + cliffs preview pack.

To reproduce

Seed: 4942781640353635955
Coordinates: /execute in minecraft:overworld run tp @s 9645.10 -54.40 -345.66 946.41 -24.82