Herderite
A variety of Herderite Subgroup
What is Herderite?
Herderite is a phosphate mineral rarely found pure. It is commonly associated with other minerals. The crystal is too soft to be used with jewelry, but gem-quality specimens are highly sought by collectors. Large specimens are particularly rare and prized even more.
Etymology & Origins
It was named for Saxon mining official Sigmund August Wolfgang von Herder (1776–1838).
Uses & Applications
Herderite is used to produce industrial fertilizers, and can also be incorporated as a part of rust-control agents and processes. Its color and shape are pleasing enough that some people like to collect it for décor.
Optical Properties
- Refractive Index
- 1.587-1.642
- Birefringence
- 0.028-0.032
- Optical Character
- Biaxial positive or negative
Herderite Market Value Calculator
Estimate the market value of Herderite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Herderite Localities Map
See where Herderite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
The Meaning
Herderite is a birthstone for the zodiac sign of Aries.
Quick Facts
Physical Properties
- Color
- Colourless, pale yellow, greenish-white; colourless in transmitted light
- Hardness (Mohs)
- 5 - 5.5
- Density
- 3.02 g/cm³
- Streak
- White
- Luster
- Vitreous, Sub-vitreous
- Crystal System
- Monoclinic
Chemical Properties
- Chemical Formula
- CaBe(PO4)F
- Elements
- Be, Ca, F, O, P
Also Known As
Identify Herderite Instantly
- Snap a photo, get instant results
- 6,700+ rocks, minerals & crystals
- Discover collecting spots near you