Willemite Calcite and ??? from the Third Plain Zinc Prospect - Australia

Contributed by: FMS Admin
Date: Mar 9th, 2026
Locality: Third Plain zinc deposit, Angorigina, Pastoral Unincorporated Area, South Australia, Australia (See on Mindat)

Description:
A whole album from one rock! It\'s from Third Plain Zinc Prospect (70km from Puttapa in South Australia). This area has been prospected and drilled several times, but the result has always been "Uneconomic". Most specimens from there are surface rocks, a few from a couple of dozer cuts.

Just as astronomers optimize photos of galaxies, I have adjusted brightness in some pictures. I usually have the UV lamp only a few cm from the specimen, so my pictures are normally bright enough not to need adjusting. I have not interfered with colors - and never do. All pictures are SW or MW.

Apart from the obvious willemite and calcite I have no idea what minerals are present. The yellow stuff in the closeup pictures is a mystery. If you use your imagination, you will see my reaction to this rock in a couple of the pictures. Toyota eat your heart out!

Originally posted by Graham Fraser on Nature's Rainbows.