⚒️🧪 geology

#MinCup24 R1 M15: #Calcite versus #Celestine

A component of limestone and seashells, calcite shows off its rhombohedral shape as stunning Iceland spar. Celestine is often sky-blue although it can also be reminiscent of sunsets, overcast skies, and even smoggy days.

VOTE: https://www.mineralcup.org/2024/vote/r1m15

⚒️🧪 geology