Listwanite | Rare Mineral Display

Encased in a glass cloche with cork is a specimen of Listwanite/Listvanite in WA state.

This was a self-find of mine back in October, 2024 from Hamilton, Washington, USA. [Hamilton is near Marblemount, North Cascades]

I had an XRF completed and the green mineral is primarily Magnesium-dominant. The two principal minerals appear to be talc and a Serpentine group mineral, most likely Antigorite with a likely admixture of platy Brucite.

The specimen is secured with copper wire to a brass screw and could be removed, if desired. I've included a hand-written collection label on linen paper with the following information:

LISTWANITE

Collected: October 29, 2024 Locality: Hamilton, Skagit County, Washington, USA

Specimen dimensions: 4.25cm x 2.25cm

I'm excited to finally have a mineral that was personally collected to offer. I noticed a hand sized boulder that had a fractured face with the most stunning green color. After cracking it open, the minty/sea foam green persisted throughout with inky black and iron oxide looking inclusions. The outside of the stone was covered in an orange iron oxide crust. The fourth photo is of the original host rock before cracking it open.

Thank you for viewing my listing!