|
This is a large crystal of alum, or aluminium potassium sulfate. ... How to Grow Purple Chromium Alum Crystals ... Big Alum Crystal Sugar Crystals or Rock Candy Borax Snowflake...
|
chemistry.about.com/od/growingcrystals/ig/Crystal-Photo...
chemistry.about.com/od/growingcrystals/ig/Crystal-Photo-Gallery/Alum-Crystal.htm
|
|
|
･ 1 Heat 1/2 c. water almost to boiling. ･ 2 Remove from heat. ･ 3 Pour into a bowl. ･ 4 Stir in alum slowly. Add in more until the alum is no longer dissolving but is starting to settle at... ･ 5 Pour a small amount of the solution into an...
http://www.ehow.com/how_3865_grow-alum-crystals.html
|
|
|
on 8/11/2006 When you are trying to add food coloring to the solution to color the crystals, don't directly put the food coloring into the solution because it will take up a lot of food coloring. I recommend that you first add food coloring to the alum, mix it to make sure that the tiny alum crystals are all colored.
|
www.ehow.com/tips_3865.html
|
|
|
|
|
I found a book [2] with instructions for growing alum crystals. It said I was supposed to dissolve 3 tablespoons of alum in one cup of water, and cover the jar with plastic, and set it in a place where it would be undisturbed.
|
ecg.mit.edu/jeremy/crystals.html
ecg.mit.edu/jeremy/crystals.html
|
|
There should be several alum crystals already forming. Save these crystals. 7. Cut a piece of string longer than the height of the jar. Tie one end to a pencil or dowel. Tie the other end to one of the alum crystals that you sat aside..
|
www.easyfunschool.com/article1625.html
|
|
The salt crystals are probably cubical while most of the alum crystals will be variants of octahedrons (8-sided solids). The salt crystals are probably considerably smaller than the alum crystals.
|
www.madsci.org/posts/archives/2005-01/1106329875.Ch.r.h...
www.madsci.org/posts/archives/2005-01/1106329875.Ch.r.html
|
|
To grow a very large crystal, one first needs a seed crystal. Nice faceted alum seed crystals measuring 3-4 mm across and about 1 mm thick were easily grown by the following procedure:
|
www.princeton.edu/~pccm/outreach/scsp/mixturesandsoluti...
www.princeton.edu/~pccm/outreach/scsp/mixturesandsolutions/activities/growingcrystals.htm
|
|
GROWING ALUM CRYSTALS; © 2000 by David A. Katz. All rights reserved; INTRODUCTION; In nature, crystals are formed naturally from molten rocks (magmas), from hot aqueous solutions, or from hot gases. Well-formed crystals, frequently encountered in hydrothermal veins, are spectacular in form and color.
|
www.chymist.com/alum%20crystals.pdf
www.chymist.com/alum%20crystals.pdf
|
|
