Dimensions: 85x59x39 mm / 3

and are one of the key signature creatures of the Paleozoic Era

83 Grams / 0

Name:  Adamite Crystals on Limonite Matrix

that melted the desert sand directly where it lay

Shatter Cone Impactite | 31.57 grams | Rochechouart Impact Structure | Montoume, France | SO24 Picture Jasper Dimensions: 85x59x39 mm / 3This is a fantastic shatter cone from Montoume France weighing 31. 57 grams and measuring 42x33x21 mm. Although not a meteorite, impactites and shatter cones are directly linked to them and their impacts. Shatter cones are evidence that the rock has been subjected to an extreme shock with very brief high pressures. This particular specimen from Montoume is classified as subvolcanic dike rock. Shatter cones are rare geological features that are only