People use to thing that they were actually fallen stars and had metaphysical properties. There is a formation in Utah that has them all disconnected so they are just one single star in a sandy matrix. Love these guys!!

This rock is limestone which forms mostly in marine settings so it would not be grass. They looks more like burrows to me. They could be tension fractures but they are not oriented well if they are.

Unfortunately not an asteroid or meteorite. However it could easily couple of things, hard to tell from a picture. It is also not obsidian because of its texture it’s not quite right and it is not glassy enough. Is it heavy or light compared to another rock it’s size?

Those are fractures there were filled with more weather resistant minerals from water flow under ground. They have no been brought to the surface where the country rock is weathering away leaving the fractures. Cool rock!

No idea, was given to me

The ‘top’ is without a doubt a crinoid stem. My original hope was that it was a crinoid piece that had rolled in the mud making a concretion but then it turned out like that. In order for the geopetal to form the outside had to be hard and already there so that it could only fill part way with mud and then because a geode in the upper half. My mos…[Read more]

Honestly, I haven’t either and am still confused 😂😂

That way very long winded, sorry!

Now that is a top dollar question! The short answer, is no. One can use the flow bands in cave rock similar to rings on a tree, HOWEVER, not every cave is the same. For example the rate of flow depends a lot of precipitation so a cave in a dry climate will have a different years per band then somewhere in the tropics. There is a lot that factors…[Read more]

I can try, if I don’t know I’m sure someone else on this platform will

No way to tell once they’re broken, sorry!

It is chalcedony, a watered version of quartz. More specifically botryoidal chalcedony! Another probably more common name for it is agate. Great find!

Horn coral (singular rugosa). The point of the coral would have been where it would have attached to the sea floor and the polyps (the corals arms) would poke out the other end. I can totally see the almond though! Haha! I might not be able to ever look at horn corals the same again 😂

It looks like calcite but more information would be needed to tell you anymore. Calcite forms in many ways such caves, from hot water flow and along fault surfaces. Looking at the orientation of everything I do not believe to be a cave nor a fault so it was most likely either a large vein or vug (a hole, think geodes). Sorry I can’t tell you much!

Sorry, rocks!

It is going to be a stromatolite, while they are considered one of the first organisms they still exist today.

It’s carborundum. It is a rare natural mineral but is easily grown in a lab hence the abundance in rock shops

It is hard to tell from this picture but it could be an iron stone (is it heavy?) or agate (if you broke it, it would show conchoidal fractures)