Emmonsite
A variety of Minerals
What is Emmonsite?
Emmonsite, also known as durdenite, is an iron tellurite mineral with the formula: Fe2(TeO3)3·2(H2O). Emmonsite forms triclinic crystals. It is of a yellowish-green color, with a vitreous luster, and a hardness of 5 on the Moh scale. Emmonsite was first described in 1885 for an occurrence in the Tombstone District, Cochise County, Arizona. It was named for the American geologist, Samuel Franklin Emmons, (1841–1911), of the United States Geological Survey. Emmonsite is found, often with quartz or cerussite in the Tombstone, Arizona area. It is also associated with native tellurium, tellurite, native gold, pyrite, rodalquilarite, mackayite, sonoraite, cuzticite and eztlite.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Emmonsite before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Emmonsite Localities Map
See where Emmonsite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
More Images
Quick Facts
Physical Properties
- Color
- Yellowish-green; light yellow-green in transmitted light.
- Hardness (Mohs)
- 5
- Density
- 4.719 g/cm³
Chemical Properties
- Chemical Formula
- Fe3+2(TeO3)3 · 2H2O
- Elements
- Fe, H, O, Te
Also Known As
Identify Emmonsite Instantly
- Snap a photo, get instant results
- 6,700+ rocks, minerals & crystals
- Discover collecting spots near you
Emmonsite FAQs
How do I identify Emmonsite?
Emmonsite can be identified by its hardness of 5 on the Mohs scale, Yellowish-green; light yellow-green in transmitted light. color. Look for these key characteristics when examining specimens.
What color is Emmonsite?
Emmonsite typically appears in Yellowish-green; light yellow-green in transmitted light.. Color can vary depending on impurities and formation conditions.
How hard is Emmonsite?
Emmonsite has a hardness of 5 on the Mohs scale. This gives it moderate hardness.
%252FAbenakiite-(ce)-01.jpg&size=small)
