Mady on Instagram: "Blue fluorite with calcite specimen from Zhejiang China The main component is a cubic crystal system of fluorite, presenting an irregular crystal cluster aggregate. The crystal surface is covered with fine microcrystals of calcite, giving it a “sugar-like” texture. It mainly features a gradient color tone from light blue to mint green to dark blue. Due to the difference in trace element (iron, copper) content in some areas, there is a halo of blue and green blending, and some

If a face-centered cubic crystal structure has all of its tetra... | Filo