charoite

#MinCup24 R2M8: #Charoite versus #Topaz

Chaorite is an intensely purple mineral with a fibrous, swirly pattern that’s been compared to Van Gogh’s Starry Night. It forms from contact metamorphism in Siberia.

Topaz is a hard, many-hued gemstone that crystallizes along the fractures in igneous rock, and is mined all over the world. It is pleochroic; i.e. it can appear different colors from different angles.

Time to choose your mineral!

VOTE: https://www.mineralcup.org/2024/vote/r2m8

⚒️🧪 geology

#MinCup24 R1 M14: #Cacoxenite versus #Charoite

"Bad guest" Cacoxenite returns as a fragile fluffball of translucent orange.
Newbie Charoite is such a striking purple, people once thought it was dyed.

They're both beautiful with unusual shapes, but only one moves on to Round 2!

VOTE: https://www.mineralcup.org/2024/vote/r1m14

⚒️🧪 geology