Geffroyite

A variety of Minerals

What is Geffroyite?

Geffroyite Market Value Calculator

Estimate the market value of Geffroyite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

Preview only. Full pricing comps and valuation report in the app.

Geffroyite Localities Map

See where Geffroyite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview
North ZoneCentral RidgeSouth Basin

Interactive map layers and collecting notes are available in the app.

Quick Facts

Physical Properties

Hardness (Mohs)
2.5
Density
5.39 g/cm³

Chemical Properties

Chemical Formula
(Cu,Fe,Ag)9(Se,S)8
Elements
Ag, Cu, Fe, Se
FREE APP
4.7
Ruby Glint rock identifier app

Identify Geffroyite Instantly

  • Snap a photo, get instant results
  • 6,700+ rocks, minerals & crystals
  • Discover collecting spots near you
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