Quartz (Var: Amethyst), Gypsum

Specimen ID: 3GH-33X

Mineral(s)
Quartz (Var: Amethyst) : SiO2
Gypsum : CaSO4·2H2O
Locality
As recorded:
Goboboseb Mountains, Brandberg, Erongo, Namibia
Dimensions
80mm x 176mm x 50mm
weight: 670g
Description
This is one of the more unusual mineral specimens we've seen to come out of the Goboboseb Mountains in Namibia. It's a large, leaf-like gypsum formation that has several purple amethyst crystals embedded in it. The white dots peppering it are also gypsum crystals. It really looks like a large leaf with veins and all. The amethyst crystals have some damage, but the gypsum is a floater because it is completely covered with the secondary gypsum and has no obvious contact point. What probably happend was that it sheared off of a larger structure at some point and then the secondary gypsum continued to grow over it.
Previous data
Mineral(s)
Name withheld

Liked by
No-one has added this to their favourites.
Log in to comment/edit
4,950,964 minIDs have been issued as of 15th Oct 2019 5:04 am BST