Perhaps you're thinking of a specific location or a different type of sandstone with a similar name? If you can provide more information, I can help you understand the characteristics of that particular sandstone and why it's classified as a sedimentary rock.
For example, if you're interested in a sandstone found in a specific region, tell me the name of that region. Or, if you remember some details about the sandstone, like its color or grain size, share that with me.
