This is a white white white powder, pure as the driven snow and more powdery. I don't dare open the bottle for fear it will get on everything!
Click the source link for an interesting story about where this sample came from.
Source: Tryggvi Emilsson and Timothy Brumleve
Contributor: Tryggvi Emilsson and Timothy Brumleve
Acquired: 6 September, 2002
Sample Group: Powders