International Space Station 800mm Photograph

Image credit:  Image Science and Analysis Laboratory, NASA Johnson Space Center (http://eol.jsc.nasa.gov)

SAND MOUNTAIN, BLACK SAND LAKE 44.39N, 121.93W

The link is to Steven Michael's (sample provider)  website on Sand Mountain.

ZERO MAGNIFICATION IMAGE

REFLECTANCE SPECTRUM

1X MAGNIFICATION WHITE LINE  = 1MM)

3X MAGNIFICATION (WHITE LINE  = 1MM)