Dimensions:  Specimen 26x8x8 mm / 1

Otter Lake

The bottom of the crater is covered with sand

Otter Lake area

It is almost round at 40x32x29mm in size

Fulgurite | Natural Lightning Impact Glass | 2.02 Grams | Sahara | SO24 Clinozoisite Dimensions: Specimen 26x8x8 mm /Fulgurite, also known as fossilized lightning, are natural glass tubes or formations that are created by the heat of lightning strikes. When a lightning bolt hits the ground it generates temperatures of up to 30,000 Kelvin (over 53,000F), hotter than the surface of the sun. This intense heat melts the silica rich sand and fuses it almost instantly, forming hollow branching structures that solidify as they cool. In the Sahara Desert where thunderstorms