You are correct. the passage I have in mind speaks of dust. Figuratively speaking, both Genesis and science agree that living things are made of "dust."
Some people are arrogant enough to imagine they know the method and the process by which this happens. Science is humble enough to admit that it does not, but curious enough to read the book in which life is written. I guess curiosity is what you have in mind when you speak of sealing oneself off from the spirit of God.
That's hardly what I have in mind!!! Curiosity is God drawing us to explore His magnificent revelation, the creation itself! I consider curiosity a divine gift. It's an openness to God, not a sealing of one's self from divine influence.
Indeed, they do. The physical basis of life is matter -- whatever that is! LOL! We'll just agree to call it: "dust." :^)