Natural Science Forum / Earth Science / Mineralogy / October 2005

Hi!  I am an elementary school student.  Today in class we placed a mineral
into a solution of hydrochloric acid and it turned black.  I am looking on
the internet to see if I can find any resources that can help me understand
what happens to minerals when subjected to acid ...

   Any help in identifying these Burmese/Myanmaran beads, especially
the bright orange-yellow mineral, would be greatly appreciated. They're
from a new "find" and nobody we've talked to knows what they are.
http://www.cs.cmu.edu/~adg/images/minerals/misc/burma_beads.jpg

Hi,  I have several pieces of lapidary equipment( each on it's own
small table)  tumbler, saw, fauceter, polisher etc.   These pieces are
about 35 yrs old, but in good condition/working order.  I am interested
in selling them.  I paid $1200 for them about 5 yrs ago, and the only

  I'm a newbie with regards to crystallography, mineralogy and all that.
Is there a way to predict the crystal structure from the space group
information? I'm really looking for a crystal structure like in these
pictures : http://www.crystalgrowing.com/crystal-lab/crystal-lab.htm ...