|Image Name||Width x Height||Size|
|SIA2749.jpg||480 x 507||43K|
|SIA2749.jpg||900 x 951||200K|
|SIA2749.jpg||2184 x 2307||1M|
Natural, silica-rich, homogeneous glasses produced by complete melting, and dispersed as droplets during terrestrial impact events. Tektites range in color from black or dark brown to gray or green and most are spherical in shape.