Frondelite
A variety of Rockbridgeite Group
What is Frondelite?
Frondelite Market Value Calculator
Estimate the market value of Frondelite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Frondelite Localities Map
See where Frondelite 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
- Dark brown, ocher-yellow, red-brown, greenish black, greenish brown, black; rarely orange
- Hardness (Mohs)
- 4.5
- Density
- 3.35 g/cm³
- Streak
- Green (unoxidized), brown (oxidized)
Chemical Properties
- Chemical Formula
- Mn2+Fe3+4(PO4)3(OH)5
- Elements
- Fe, H, Mn, O, P
FREE APP
4.7
Identify Frondelite Instantly
- Snap a photo, get instant results
- 6,700+ rocks, minerals & crystals
- Discover collecting spots near you