What kind of rock is an genesis?

"Genesis" is not a type of rock. It's likely you're thinking of the band Genesis, a popular rock band from the 1970s and 1980s.

If you're looking for a specific type of rock, please provide more information, such as:

* What does the rock look like? (Color, texture, shape)

* Where did you find it? (Location, geological context)

* What are its properties? (Hardness, weight, sound when struck)

With more details, I can help you identify the type of rock.