Epididymite
A variety of Minerals
Rare
What is Epididymite?
Epididymite is a hydrated sodium beryllium silicate. It shares the same chemical composition with eudidymite but with a different crystal structure. The name of it derives from the Greek word "near" and "twin", representing "the relationship with eudidymite" and "the habit that it always occurs in twins" respectively.
Epididymite Market Value Calculator
Estimate the market value of Epididymite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Epididymite Localities Map
See where Epididymite 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
- Colourless
- Hardness (Mohs)
- 5.5
- Density
- 2.548 g/cm³
- Streak
- White
- Luster
- Vitreous
- Crystal System
- Orthorhombic
Chemical Properties
- Chemical Formula
- Na2Be2Si6O15 · H2O
- Elements
- Be, H, Na, O, Si
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