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20929 - Beautiful Malachite Crystals on Barite Matrix - Taouz Barite Mines (Morocco) Mosasaur Jaws Agassiz and Desor 1846 (sea

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Folio notes

Description

Agassiz and Desor 1846 (sea urchin)

Cephalopoda - Ammonitida - Vascoceratidae

It appears in the Akrabou formation

and even in one of them you can see an emerging germ replacement tooth

20929 - Beautiful Malachite Crystals on Barite Matrix - Taouz Barite Mines (Morocco) Mosasaur Jaws Agassiz and Desor 1846 (seaMalachite is a copper carbonate hydroxide mineral, with the formula Cu2CO3(OH)2. This opaque, green banded mineral crystallizes in the monoclinic crystal system, and most often forms botryoidal, fibrous, or stalagmitic masses, in fractures and spaces, deep underground, where the water table and hydrothermal fluids provide the means for chemical precipitation. Individual crystals are rare but do occur as slender to acicular prisms. Pseudomorphs after

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