" is a variety of biotite mica that exhibits a golden or yellowish color due to the presence of iron impurities

green amethyst or vermarine

and calming effects

A few olivine grains contain planar fractures

primarily due to its association with lightning

Shatter Cone Impactite | 17.4 grams | Rochechouart Impact Structure | France | SO24 Rutilated Quartz " is a variety ofThis is a fantastic shatter cone from France weighing 17. 4 grams and measuring 38x26x16 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. Shatter cones are rare geological features that are only known to form in the bedrock beneath large meteorite impact craters. They have a