Chocolate Calcite Cluster from Leiping Mine, Chenzhou, Hunan, China, featuring a special layered structure: the core is chocolate-brown calcite, encased by a transparent thin calcite shell. These large rhombohedral crystals have flat faces, sharp edges and parallel growth striations with strong vitreous luster. Iron minerals dye the core into uniform chocolate tone, with yellowish-brown original growth bands enclosed inside.

Intergrown crystals form triangular and trapezoidal geometric textures on natural fractures, while reddish-brown host rock fragments cling to crevices, creating distinct texture contrast. Kept in its natural state, the specimen comes with a custom acrylic base for collection and display.

巧克力方解石晶簇

本标本产自中国湖南郴州雷坪矿，晶体结构独特：内部为巧克力棕褐色方解石主体，外部包裹一层通透的方解石薄壳。矿物为粗大菱面体晶型，晶面平整，棱边锐利，带有平行生长纹，玻璃光泽强烈；铁质矿物浸染内核形成均匀巧克力色泽，内部可见黄褐色原生生长环带。

晶体交错丛生，天然断面形成三角、梯形几何纹路，裂隙附着红褐色围岩碎屑，质感反差鲜明。标本保留天然原石原貌，搭配定制亚克力底座，适用于收藏陈列。

Dimension: 7.5×8.6×5.2cm.

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