This is a must have 54 gram Impact Vesicular Breccia also referred to as Suevite coming from the famous Rochechouart impact structure in Southwestern France

83-gram Kara Crater Impactite specimen from the Yugorsky Peninsula in Nenetsla

Single large plates or "books" of biotite can grow to considerable size and can make impressive mineral specimens

Prehnite is believed to have a calming effect on the mind and emotions

Color: Pink

Kofelsite Impact Myth | Grey Melt Rock | 22.3 grams | Köfels Structure | Austria | SO24 Natrolite This is a must haveThis is a 22. 3 gram Grey Melt Rock from the Kfels Structure, Austria. It measures 38x22x21 mm. The specific origin of kofelsite rocks is uncertain & debated. The rocks are found in a landslide deposit in western Austria. Researchers have suggested that the landslide was impact triggered. The kofelsite samples in the landslide deposit thus may be impactites (fused rocks from the heat of impact). Some workers have suggested that the rocks are