You will find that there are more Pokémon to encounter in Pokémon Go. Many of these Pokémon have the ability to appear as a bright version, a unique coloring that makes it stand out from the original version. There is an incredibly low rate of appearance for a bright Pokémon, so many trainers are encouraged to go to great lengths to catch this version. Can you catch a shiny Alolan Geodude in Pokémon Go?
The Alola version of Geodude is not the same as the standard version. The two are different, with unique moveset and typing. Although the two are different, they both have released brilliant versions and we can confirm that you have a chance to meet the brilliant version of Alola Geodude on your travels. There are many ways you can meet Alolan Geodude, but since he's an Alolan version of the original Pokémon, your best chance of catching him is through field research or raids.
Encounter with the Alolan Geodude can happen if you receive Field Research assignments exclusive to the event if he is spawning. For example, during the Mountains of Power event, you can acquire an encounter with Alolan Geodude by hatching an egg or doing this field research task during the event. While the exclusive field research disappears after the event, there are more in the future. Additionally, Alolan Geodude spawns typically appear in one-star raids, providing you with another, albeit expensive, way to encounter a bright version.
You will have to wait for Alolan Geodude to be a spawn available for specific events in Pokémon Go. It is a less common encounter.