16,5cm diagenetic gypsum crystal with a clear body and a clay-rich center that shows the geometry of the crystal during a particular step of its zonation. From the late Cretaceous coal beds of the southern Ebro Basin.
編號 99987560
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ZONED 浮动石膏 变种:Selenite 稀有地点标本! - 高度: 16.5 cm - 闊度: 5.6 cm- 217 g - (1)
16,5cm diagenetic gypsum crystal with a clear body and a clay-rich center that shows the geometry of the crystal during a particular step of its zonation. From the late Cretaceous coal beds of the southern Ebro Basin.