Core Sample from Uzon Caldera

1
Core Sample from Uzon Caldera

• Elizabeth Hollingsworth
• Clay Mineralogy

2
Environment of Yellow Blue Pool

• Water chemistry
• High content of dissolved Si, Na, Cl, SO4-2
• pH 5.8
• Eh - 225mv
• Temperature 54C

3
Core Sample

• Sub-sampled four horizons
• 18
• 19
• 19a
• 20
• Distinct chemical gradient over small scale
• Temperature
• Eh
• Bacterial influences

4
Trends in the Core

• Opal throughout core
• Sulfur abundant at top/gives way to pyrite as you
  increase in depth
• Kaolin group mineral becomes more abundant with
  depth
• Smectite is most abundant in the middle, but
  occurs throughout

5
Air Dried 18-20
6
Sample 18
7
Sample 19
8
Sample 19a
9
Sample 20
10
What is Next

• Use 060 to determine type of kaolin polymorph
• Identify mystery peaks
• Better characterized the smectite
• Kelly/Green Method or other saturations
• Use 060 for Di vs Tri
• Continue to investigate possibility of mixed
  layering with Newmod