Luca Esposito

矿石拍卖

来自西班牙的美丽砂质方解石标本！不是匈牙利；它来自塞戈维亚市附近一处未命名的砂矿。它的形成很可能与盐水与未饱和水之间的界面有关，与许多类似结构不同的是，这些实际上是单晶而不是普通的团块。它们出现在一层狭窄的沉积带中，并被包裹在原始母岩的石英砂颗粒之中，某些更为独特的样本甚至显示出内含完整的鹅卵石。

Beautiful sand calcite specimen from Spain! Not Hungary; this comes from an unnamed sand pit close to the city of Segovia. Its formation is probably related to the interface between brine and unsaturated water, and unlike many other similar formations, these actually are monocrystalline rather than normal nodules. These appear in a narrow band of sediments and are included with the quartz sand grains of their original host rocks, with some of the more unique examples displaying full pebbles included within.

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方解石 var.SAND 方解石来自西班牙!!! - 高度: 18.6 cm - 宽度: 16.6 cm- 1978 g - (1)

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方解石 var.SAND 方解石 来自西班牙!!! - 高度: 18.6 cm - 宽度: 16.6 cm- 1978 g - (1)