I want you to post about a sedimentary rock. It can be of clastic, chemical, or biological origin. Make sure you pick is indeed a sedimentary one.

I want you to tell me something about this rock – e.g. what is it called, what is it made of, maybe even how it formed.

So like before it needs to be a rock that you have some connection to – either one you own or one you go out and find. You can even use buildings. Once again you need to post a picture as well – if you use an image from the internet because you do not have one of that location you must acknowledge where you got it. Almost 150 words with a picture of the sedimentary rock.