underthescopemineral: Olivenite Cu2AsO4(OH) Locality:Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany Field of View: 1.70 mm Photo: Michael Förch Olivenite is a mineral of secondary origin, a result
tags: So many OTPs,
from: https://eikuuhyo.tumblr.com/post/157481766906