Actinolite Sand Grain, Day Creek, Washington State
This is a actinolite sand grain from Day Creek that has been crushed and mounted in 1.620 high dispersion refractive index oil.
Transmitted Darkfield Dispersion Staining with a Single Linear Polarizing Filter
Definition/Function:
Day Creek is a creek in Skagit County Washington that empties into the Skagit River. Transmitted darkfield dispersion staining is very effective with larger grains in a relatively clean mount. The condenser darkfield stop should be just a little larger than required to block in incoming beam.
Significance in the Environment:
Sand from this creek was used in a driveway and resulted in the contamination of adjacent home interiors.
