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Marokko Fossil

The close-up view of each stone type shows a relatively true image of the crystalline structure and the colouring. This is suitable for grained slabs to a limited extend only. In regard to the colour matching, please take an original sample of the stone from your furniture store as a basis.

Petrography

This is a brown to black sludge lime with little veining, sprinkled with ammonites (goniatites) and orthoceras, the shells of fossil cuttlefish. To-day the best known representative of these is the "squids?. The shells and their fragments clearly stand out due to the white colour and can reach sizes up to D = 15 cm. 

Petrogenesis

Limestone is sedimentary rock. In this case, it is a so called sludge lime. The dark colour is caused by organic substances (bitumen). Often, this limestone is generated in an oxygen-deficient environment at the bottom of the sea.

Hardness Soft Stone
Structure Type Slab with Irregular Pattern
Synonyms Fossil Brown, Gallaxy Marron, Marron Etrusco, Erfoud Marrone, Pietra di Erfoud
Group Sedimentary rock
Petrographic Assignment Limestone with orthoceras and goniatites
Age Devon (Approximately 395 - 345 million years)
Colouring Minerals Calcite, coloured black-brown from carbon substances and small bitumen content
Average Hardness 3 (according to Mohs's hardness scale 1-10) / Soft stone
Deposit Rissani near Erfoud / Morocco