U + A

Sumguy01 · Post by **Sumguy01** » Tue Mar 26, 2019 9:01 pm

Urea + Alum dissolved in vinegar, fast dry in oven, no cover glass, 4x and 10x obj. polarized with retarder, # 4 is Zerene Stack,

Jacek · Post by **Jacek** » Wed Mar 27, 2019 1:42 pm

Nice

grgh · Post by **grgh** » Wed Mar 27, 2019 4:06 pm

kaleidoscope springs to mind, beautiful colours.

Robert Berdan · Post by **Robert Berdan** » Thu Mar 28, 2019 3:18 pm

Nice crystals. I have played with Urea as melts and from solutions and my samples looked very different. It is amazing how small changes to the solvent, drying condition or additions to the solution can change the shape of the crystals. Even in a single batch I see a lot of variation.

Nice photos.
RB

Sumguy01 · Post by **Sumguy01** » Thu Mar 28, 2019 11:04 pm

Thanks for the nice comments.