I took these pictures by simply holding my camera up to my microscope.
Collected without a magnet (click to enlarge). Size: about 0,4 - 2 mm.
Collected with a magnet. Size: about 0,5 - 1 mm.
Specimens size - examples (images not to scale).
Row 1
1,2mm - 1mm - 1,2mm - 0,5mm - 1,3mm
Row 2
1,2mm - 1mm - 0,8mm - 0,6mm - 0,8mm
Row 3
0,5mm - 1,2mm - 0,9mm - 1,3mm - 1mm
Row 4
1mm - 1,1mm - 1mm - 1mm - 1,3mm
Note: specimens below 0,4-0,5mm for me are difficult to handle.
1,2mm - 1mm - 1,2mm - 0,5mm - 1,3mm
Row 2
1,2mm - 1mm - 0,8mm - 0,6mm - 0,8mm
Row 3
0,5mm - 1,2mm - 0,9mm - 1,3mm - 1mm
Row 4
1mm - 1,1mm - 1mm - 1mm - 1,3mm
Note: specimens below 0,4-0,5mm for me are difficult to handle.
Comparison between two sites.
Sites are 20 km apart
(bottom: Silvana Cosmi's collection).
(bottom: Silvana Cosmi's collection).
Comparison between two sites.
Sites are 5 m apart.
Colors of glass spherules.
POSSIBLE MICRO-TEKTITES. Volkhovites?
Size 0,5 – 3 mm. The morphologies very closely match those of proven micro-tektites.
Metallic spherule with polygonal (“soccer – ball”) surface.
Size 0,9 mm.