Pale Yellow Stalactitic Calcite Crystal Cluster 3 sales forming a rare aluminum-rich hydrothermal

forming a rare aluminum-rich hydrothermal mineral combination unique to Guizhou mines

产地：中国云南省大理巍山彝族回族自治县。立方体晶型萤石标本，规整的立方体晶体紧密聚合。表层氧化铁薄膜借助光波干涉效应形成彩虹锖色。背光照射能够看见半透明紫色内核，单颗晶体内部发育层次分明的环带构造。

Crystal tips are coated with fine‑grained pyrite film

the base is a matrix of blue fluorite

Pale Yellow Stalactitic Calcite Crystal Cluster 3 sales forming a rare aluminum-rich hydrothermalPale Yellow Stalactitic Calcite Crystal Cluster from Phong Nha Ke Bang National Park, Vietnam. These specimens are pale yellow stalactitic calcite aggregates naturally intergrown with white quartz host rock. The crystals exhibit typical scalenohedral and rhombohedral combined crystal forms. They are translucent with pale honey yellow tint and intense vitreous luster, featuring the characteristic radial clustered growth structure of stalactitic