Janggunite
A variety of Minerals
What is Janggunite?
Janggunite is a rare manganese oxide mineral with the chemical formula Mn5-x(Mn,Fe)1+xO8(OH)6. It was first described in 1975 for an occurrence in the Janggun mine, Bonghwa-gun, Gyeongsangbuk-do, South Korea and named for the locality.
Janggunite Market Value Calculator
Estimate the market value of Janggunite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Janggunite Localities Map
See where Janggunite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Map preview
North ZoneCentral RidgeSouth Basin
Quick Facts
Physical Properties
- Color
- black
- Hardness (Mohs)
- 2 - 3
- Density
- 3.58 g/cm³
- Streak
- brownish black to dark brown
Chemical Properties
- Chemical Formula
- Mn5-x(Mn,Fe)1+xO8(OH)6
- Elements
- Fe, H, Mn, O
FREE APP
4.7
Identify Janggunite Instantly
- Snap a photo, get instant results
- 6,700+ rocks, minerals & crystals
- Discover collecting spots near you
%252FAbenakiite-(ce)-01.jpg&size=small)
