Rainbow‑Tarnished Pyrite on White Dog‑Tooth Calcite from Piaotang Mine, Dayu County, Ganzhou, Jiangxi, China.
Sharp‑tapered scalenohedral calcite crystals form dense aggregates. Crystal tips are coated with fine‑grained pyrite film, displaying iridescent metallic tarnish. The complete crystal cluster retains natural hydro‑thermal growth texture.

产自中国江西赣州大余县漂塘矿区，覆有幻彩黄铁矿的白色犬牙状方解石。
偏三角面体形态的尖锥方解石晶体密集丛生。晶体尖端被微粒黄铁矿薄膜包裹，呈现出虹彩金属晕彩。完整晶簇保留原生热液生长纹理。

Dimension : 18.6×9.7×5.2cm.

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