古玩城2021精品推荐第一期：碳质球粒陨石

碳质球粒陨石是一种较为少的陨石品种，大部分碳质球粒陨石的颜色较深，他们的熔壳呈深灰色至黑色，它们的内部同样呈黑色，整体有点像木炭的黑。碳质球粒陨石的这一区别其它陨石的色泽，让人们很容易认为碳质球粒陨石是由碳组成，就连没深入研究过它们的研究员们，最开始也以为碳质球粒陨石含有大量的碳，而事实证明并非如此，碳的含量并不是碳质球粒陨石的识别特征，而它们的镁、钙、铝相对于硅的丰度成为了区别普通球粒陨石的关键。

Carbonaceous chondrites are a rare meteorite species, most of which are dark in color, their melting shells are dark gray to black, their interiors are also black, and the whole is a bit black like charcoal. This difference between carbonaceous chondrites and the colors of other meteorites makes it easy for people to think that carbonaceous chondrites are composed of carbon. Even researchers who have not studied them deeply thought that carbonaceous chondrites contain a large amount of carbon at first, but it turns out that this is not the case. Carbon content is not the distinguishing feature of carbonaceous chondrites, and their abundance of magnesium, calcium and aluminum relative to silicon becomes the key to distinguish ordinary chondrites.

碳质球粒陨石除了丰富的球粒外，有的还含有类似球粒（球形）或不规则型的“富钙富铝”难熔包体，大小在亚毫米到厘米不止！
类似球粒的“难熔包体”与球粒的区别是：难熔包体是由高温难熔矿物（如尖晶石、黄长石、透辉石、钙长石）等矿物组成，而常规球粒主要是由橄榄石和辉石组成。

In addition to abundant chondrites, some carbonaceous chondrites also contain "calcium-rich and aluminum-rich" refractory inclusions similar to chondrules (spherical) or irregular, ranging in size from submillimeter to centimeter! The difference between "refractory inclusions" like pellets and pellets is that refractory inclusions are composed of high-temperature refractory minerals (such as spinel, feldspar, diopside and anorthite), while conventional pellets are mainly composed of olivine and pyroxene.

碳质球粒陨石,是陨石大家族中一种比较特殊含碳物质元素的陨石,说它特殊是因为它们具有很高的科研价值与现实意义。它们代表的是最原始太阳系中的演化与成因物质,它们是太阳星云形成初期幸存下来的固体物质。它们保存了一些太阳星云的凝聚、演化及成因信息,其矿物成因学和化学物质组分反映了早期太阳星云、行星、小行星和恒星的形成和演化历史。碳质球粒陨石在含水蚀变过程中保留下的一些特征，与早期太阳星云低温演化关系有着密切的联系,因此, 碳质球粒陨石是早期太阳星云形成和演化的见证者。不同化学组分的碳质球粒陨石代表了太阳星云不同区域的演化产物，它们的形成区域不同也与太阳之间保持的距离不同，其物理化学条件也会由氧化转变为强还原。

Carbonaceous chondrites are special meteorites containing carbon elements in the meteorite family. It is said that they are special because of their high scientific research value and practical significance. They represent the evolutionary and genetic materials in the most primitive solar system, and they are the solid materials that survived in the early days of the formation of the solar nebula. They preserve some information about the condensation, evolution and genesis of solar nebulae, and their mineral genesis and chemical composition reflect the formation and evolution history of early solar nebulae, planets, asteroids and stars. Some characteristics of carbonaceous chondrites during water-bearing alteration are closely related to the low-temperature evolution of early solar nebulae. Therefore, carbonaceous chondrites are witnesses to the formation and evolution of early solar nebulae. Carbonaceous chondrites with different chemical compositions represent the evolution products of different regions of the solar nebula. Their formation regions are different from the distance between the sun, and their physical and chemical conditions will change from oxidation to strong reduction.

碳质球粒陨石(精品)，此陨灰黑色，重730克，局部磁铁可微微吸引，切面可见陨石球粒，上端见白色和绿色的玉(岫玉)相间，从形态和撞击点可以看出是定向陨石，陨种稀有珍贵！

Carbon chondrite (high-quality goods), which is gray-black and weighs 730 grams, can be slightly attracted by local magnets. The chondrites can be seen on the section, and white and green jade (Xiuyu jade) can be seen at the top. It can be seen from the shape and impact point that it is a directional meteorite, and the meteorite is rare and precious!

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