Getting the Rocks Ready in the Lab
Trip Start Jan 30, 2007
10Trip End Aug 08, 2007
Map your own trip!
Show trip route
Jonathan also needs to grind up the rock samples for some of the geochronology analysis work (analysis to figure out how old the rock is) that he will be doing. He only needs certain minerals in the rock. The first part of getting to these minerals is to crush th rocks down into tiny pieces. From looking at the pictures, you can see that he is crushing very fresh (so fresh that it is very clear) obsidian, which is volcanic glass, from the Coso Geothermal Field down by China Lake in Southern California.
After crushing the rocks, Jonathan and one of his students, Jamie, put the rocks on the Wilfley Table. This table vibrates and has water running over it. The heavy minerals that Jonathan needs for analyzing get separated mostly by density and can be collected.