Admit it, rocks are special. The best ones are not just pretty but intriguing, even beautiful. Admit it, you actually like some rocks. Show us one of your favorite sedimentary rocks. (If you don't know what you have, try posting your pictures in the Forum.)
New York Fossiliferous Mudstone
I have rarely found any snail fossils, so this was a treat and the highlight of my rock-collecting day trip. &…
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Michigan Concretion - My Sedimentary Rock
I've never found a rock like this before and would really like to know what it is. I just started collection rocks and this is a special one. I just think that it is a very interesting stone with its…
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Limestone with Common Opal
These rocks are very pretty and this is the only place I have found the thick layers of common opal. Most places you only find the small pieces of opal. I like this rock because of its beauty and suc…
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