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(2011) and Welten et al
that make me thinking they are jung adult migrants
Geological Formation: Ukraine Silurian outcrops
Beautiful spine corresponding to the dorsal fin of this incredible shark that reigned the seas and the fluvial systems next to the coast during all the Mesozoic Era
SWJ0050 - Exceedingly Rare Andradite Garnets with Sphalerite from Mexico Akantharges (2011) and Welten et alScientific name: Andradite + SphaleriteLocation: Santa Cruz Mining District, Santa Cruz, Sonora (Mexico). Size Weight: 72 x 60 x 28mm 186gREF.: SWJ0050DESCRIPTION: Exceedingly rare association from this rare location. Quite limited stuff. Very uncommon. Andradite is a mineral species of the garnet group. It is a nesosilicate, with formula Ca3Fe2Si3O12. Andradite includes three varieties: Melanite: Black in color, referred to as "titanian andradite".
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