Segelerite
A variety of Minerals
What is Segelerite?
Segelerite is a complex phosphate mineral with formula CaMgFeOH(PO4)2·H2O. It occurs in pegmatites and forms striking green or chartreuse crystals. It was discovered in 1974 in the Black Hills of South Dakota by an amateur mineralogist from New York, Curt G. Segeler (1901–1989), after whom it is named. It is closely related to overite which is virtually the same mineral except that the iron is replaced by aluminium. Another mineral in the same series is juonniite wherein the iron is also replaced, this time by scandium.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Segelerite 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.
Segelerite Localities Map
See where Segelerite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Green, Chartreuse, Colorless, pale yellow
- Hardness (Mohs)
- 4
- Density
- 2.61 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- Ca2 Mg2 Fe3+2(PO4)4(OH)2 · 8H2O
- Elements
- Ca, Fe, H, Mg, O, P
Identify Segelerite Instantly
- Snap a photo, get instant results
- 6,700+ rocks, minerals & crystals
- Discover collecting spots near you
Segelerite FAQs
How do I identify Segelerite?
Segelerite can be identified by its hardness of 4 on the Mohs scale, Green color. Look for these key characteristics when examining specimens.
What color is Segelerite?
Segelerite typically appears in Green, Chartreuse, Colorless, pale yellow. Color can vary depending on impurities and formation conditions.
How hard is Segelerite?
Segelerite has a hardness of 4 on the Mohs scale. This gives it moderate hardness.
%252FAbenakiite-(ce)-01.jpg&size=small)
