tumbled rock help

I would like to add the the big blue one in the first picture is crumbly.

I'm going to guess that the blue ones may be rough unpolished Turquoise. I don't know about the others, but I'll let Farmerman know about your thread and I'm sure he will have a better idea.

Oh ok, thank you very much!

Another guess at the blue one is Chrysocolla.

Are the white ones partially tumbled/polished already, or is that their natural state?

I really don't know. They do not have rough edges but they were just handed to us in a bag. The son didn't know much about them but he will be bringing me more tomorrow.

Is Chrysocolla flaky? The one in the picture leaves a sort of dust if you rub it to hard.

I don't know. I'm just going by gut instinct on some of this, based purely on the visual.

Farmerman is our resident geologist. He's having trouble with his PC right now but I'm sure he'll be along shortly to help out.

I really appreciate it:) I don't know much about these things at all. The other ones I found on an online glossary lol

No 1 could be several things, you can look em up
Azurite, Chalcophyllite, cyano trichite, or dumortierite. Each ahs special clues to it.
My first choice is the azurite. A quick way is to put a drop of MURIATIC ACID (BE VERY CAREFUL NOT TO GET IT ON YOUR HANDS OR LET YOUR KID EVEN NEAR IT)> The acid will cause the azurite to fizz weakly (its a carbonate mineral so acid on a carbonate is like alka seltzer in a weak acid). Same thing for cyanotrichite except its fizz is very weak. If it fizzes at all , Id say its azurite. There are many other blue minerals but the style of this one limits its possibilities.
If it doesn't fizz, can you see light through it?. Let me know and we can work on it together

2The second pic is called Cryptocrystalline quartz, most likely chalcedony. Its a common semi precious stone that is used for cabochons and tumbled rocks.
It was also used for tool making by the early native americans.

I can not see through the blue ones. I will have to order the acid. I live in WA in the middle of nowhere so a store is probably out of the question. Is the dust coming off it "bad", should the kids handle it?

The white ones, that's awesome . Thank you so much.

What does cryptocrystaline mean? How come the rocks look rounded and not crystalline?

Often, you can get muriatic acid at those home improvement stores that are big on cement work. Of course, Washington does have some really small towns. . . .

Im pretty sure its azurite because of the "crumbly" and cant se through it. (Well wait to see the fizz test before we make more complex guesses).
You may want to try vinegar but sometims vingar isn't atrong nough to cue fizzing unless you smash a small chunk into powder.

cryptocrystalline quartz just means "Teeny weeny crystals".
Quartz can appear as a dense rock that tumbles in a stream or in a rock tumbler just like we see in the ones posted.
The coloris kind of a giveaway. I call it a "Greasy" look which is often called "bacon fat" by the rockhounds.

I wish I could come up with a standard mix of a stronger vinegar for new rockhounds and kids so they don't get burned like they can with HCl (muriatic acid).
I buy concentrated HCl from a mining supply company and I make a 0.3 NORMAL solution. Its still very able to induce fizzing but Id not want any kids to be in the field with a bottle of that stuff in their packs. That's why the muriatic acid is usually even more dilute than 0.3N.(you just want to clean the cement, not dissolve it away)