Astrophyllite Crystals in Matrix - Russia This specimen was found in

This specimen was found in the Solnhofen Limestone of Germany

Their shells were chambered allowing them to propel themselves through the water

" These concretions are essentially fossilized mud bubbles that began forming during the Cretaceous Period between 50 to 70 million years ago

smoky quartz found in Ireland was used in the jewelry worn by those in mourning

on South Bass Island in Lake Erie

Astrophyllite Crystals in Matrix - Russia This specimen was found inSize: 1. 48 x 1. 25 x 0. 53 in. Weight: 0. 55 oz Location: Russia Chemical Formula: (K,Na)3(Fe++,Mn)7Ti2Si8O24(O,OH)7 Astrophyllite is a very rare, brown to golden yellow hydrous potassium iron titanium silicate mineral. The mineral usually forms as bladed, radiating stellate aggregates. Astrophyllite gets its name from the Greek words, astron meaning "star" and phyllon meaning "leaf". The mineral can be found in a few scarce, remote localities, such