Specimen collected from the Xianghuapu mining area, Hunan Province, China.

Dimension: 5.1*4.9*4cm

Main crystal:

Cubic fluorite, slightly larger than a walnut in size. Entirely pale green and translucent, with uniform coloration. Crystal faces exhibit a vitreous to greasy luster, locally appearing frosted with subdued reflection. Face surfaces are micro-undulating, with shallow pit-like dissolution features, indicating fluid disturbance during the late stage of mineralization.

Overgrowth structure:

Multiple secondary cubic fluorite crystals are epitactically overgrown on the main crystal surface. Also pale green and translucent, they are well-formed, either parallel intergrown or randomly oriented, creating a typical "crystal-on-crystal" growth hierarchy.

Associated quartz:

One side of the main crystal is partially covered by white quartz microcrystalline aggregates. The quartz occurs as anhedral to subhedral granular crystals, densely distributed, resembling a snowflake-like crust.

Brief analysis:

The main crystal and secondary microcrystals formed during different stages within the same mineralization system. Surface dissolution and frosted luster record fluctuations in fluid chemistry; the quartz crust represents rapid silica precipitation during the terminal stage. "Uniform pale green translucency + crystal-on-crystal growth + snow-like quartz crust" is a typical assemblage of Xianghuapu fluorite.

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