Yoan Beckaert

矿物拍卖（收藏家探索自然奇观之旅）

一个非常、非常奇特且异常大的钴方解石浮体，来自这个经典的刚果产地，因钴和铜矿物而闻名。这件，尤其来自一个相对较新的发现，我没有找到太多信息，也没看到太多同类样品，所以它可能来自一个相当小的空腔。尽管如此，这件标本在体积上已经相当显著，因为并不多见的钴方解石晶体能达到如此之大，而且它晶体也相当完整。这件标本由两个互生、尖锐、光亮且轮廓清晰的菱方晶体组成，外部呈深波尔多紫色，内部为无色的普通方解石，可透过样品周围的一些剥落处看到。外部富钴的外观要么代表外部存在分区，要么是方解石表面的部分置换暴露出来。在这块样品的表面，可以看到孔雀石和异质铁矿并存，孔雀石因其鲜明的色彩对比而特别美丽。）

A really, really odd and remarkably big cobalt calcite floater from this classic Congolese locality, famous for both cobalt and copper minerals. This piece, in particular, comes from a fairly recent find, which I have not found too much information about nor seen too many pieces from, so it probably was a pretty small cavity. Still, this piece is already remarkable just size-wise, as not many cobalt calcites are found to have crystals nowhere near as big, and also, it is just so well crystallized. This specimen is composed of two intergrown, sharp, lustrous, and well-defined rhombohedrons with a deep Bordeaux purple-colored exterior and a colorless normal calcite interior that shows through a few exfoliations found around the piece. This either implies the cobalt-rich exterior represents an external zonation or it is a partial replacement of the surface of the calcite showing through. On this piece's surface, both malachite and heterogenite can be observed, with the malachite being of particular beauty thanks to its striking color contrast.

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非同寻常的钴方解石漂浮体与异质辉铜矿和孔雀石 - 高度: 7.3 cm - 宽度: 8.6 cm- 207.34 g - (1)

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非同寻常的钴方解石漂浮体 与异质辉铜矿和孔雀石 - 高度: 7.3 cm - 宽度: 8.6 cm- 207.34 g - (1)