Bilitonite

Billitonites, also known by the local name Batu Satam, are rare tektites from Belitung Island in Indonesia. They belong to the extensive Australasian tektite strewn field, which formed approximately 788,000 years ago during a major impact event in Southeast Asia.

They are characterized by a black to dark brown color, glassy character and strongly sculpted surface with irregular pits and grooves. Billitonites occur in various shapes, including rounded pieces, discs, drops and elongated forms. Their distinctive surface sculpture makes them easily recognizable and attractive to collectors. Studies of Batu Satam specimens from Belitung have confirmed their chemical and physical similarity to other Australasian tektites.

✓ Authenticity guarantee ✓ Real photos of the offered specimens ✓ Carefully selected assortment ✓ Physical store

#ShowMore#

Batu Satam from Belitung Island

The name Batu Satam is used for billitonites found on the Indonesian island of Belitung. Research on these tektites has shown a predominance of silicon dioxide, together with the presence of aluminium, iron, calcium and other elements. Elevated levels of tin, manganese and iron have also been recorded in the studied specimens, which may be related to the geological composition of the Belitung region.

Australasian tektites formed during an impact in which terrestrial rocks were exposed to extreme temperatures, melted, and part of the material was ejected into the atmosphere. The molten material cooled rapidly during flight and subsequently fell across an extensive strewn field covering a large part of Southeast Asia, Indonesia and Australia.