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rail-price-top · floating island · grid + stamp
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Nascimento and Zaher 2011
It appears in the Akrabou formation
These irregularly-coiled ammonites are called heteromorph ammonites
Ceraurinus
Cephalopoda - Ammonitida - Vascoceratidae
20929 - Beautiful Malachite Crystals on Barite Matrix - Taouz Barite Mines (Morocco) Mosasaur Jaws Nascimento and Zaher 2011Malachite 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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