Tiger Iron Bowl | Westaustralien white Description: Ceratite ammonite with a

Description: Ceratite ammonite with a limestone layer formed by erosion processes on a custom-made stand

• Additional information: Petrified wood

usually silicon dioxide (SiO2) or calcium carbonate (CaCO3)

Mainly brick red to brownish red

Chondrules are typically about a millimeter in diameter and are composed primarily of the silicate minerals olivine and pyroxene

Tiger Iron Bowl | Westaustralien white Description: Ceratite ammonite with aOrigin: Western Australia Age: Older Proterozoic, about 2. 5 billion years ago Size: H8cm W32cm D33. 5cm Description: The 2. 5 billion year old tiger iron is visual evidence of the first life forms on our planet Earth. Dating from the Early Proterozoic, this specimen of the Marra Mamba Iron Formation features a broad chatoyant band, ground and polished into a shell, with a wavy fire colored coloration. The base is ground flat for display. Additional