Any insights on unknown materials tested in a tile?

[Tabathos]

Hello. I did a test tile with some materials I don't know their name. They came as a bonus with my old kiln, so I did a test tile in cone 2. 

I would be grateful on insights about this. I know one is a feldspar (because the box says so), but it doesn't specify what kind of feldspar it is. I also wrote how the material look in raw state. Thank you very much in advance. 

Edit: The one that says yellow crystal actually dissappeared. I wonder if it volatized, or fell off the tile.

[Min]

My guess on #1 would be a gum, tragacanth maybe? Have you read through the Mike Bailey and Michael Hewitt article thats here on identifying unlabelled materials? They have a few methods of trying to determine what unknown materials are. Not sure what you mean for #2 and #3 being "stone". How much of the materials do you have? Might not be worth the effort trying to figure them out if it's just small quantities.

[Tabathos]

Thank you very much for the link, i'll read it later. 

I mean about stone that they are not in powder form, they solidified. Maybe a more appropriate word is "rock"?

I have a lot of it, like  30 kg of feldspar, and 20 kg of the white powders. 

[neilestrick]

If you fired samples to cone 6 we would probably have a better idea of what some might be, since that's the temp a lot of people here work at. I've never seen material samples fired to cone 2.

[oldlady]

can you tell us where you are in the world?