Elpidite specimens for sale

4 for sale · $150–$1,500 USD

19 in the gallery

Elpidite is a hydrated sodium zircon silicate that forms colorless to pale yellow, transparent to translucent crystals with a glassy to vitreous luster. It typically occurs in zeolite-bearing pockets within alkaline igneous rocks and in hydrothermal environments, where it can crystallize as well-formed prismatic and tabular habit in relatively small sizes. Notable specimens have originated from a number of global locales, reflecting its specialized formation conditions and rarity. Collectors prize elpidite for its crisp crystal forms, clarity, and the scientific interest tied to its hydration state and association with other high-temperature, low-alumina minerals.

Formula
Na2ZrSi6O15 · 3H2O
Rarity
Rare
Stability
Moderately Stable
Collector interest
Very High Interest
Classification notes
Silicate, inosilicate; Strunz 9.DG zirconium-titanium silicates

Key characteristics

Crystal system
orthorhombic
Mohs hardness
5–5.5
Specific gravity
2.52–2.56
Luster
vitreous, silky
Transparency
transparent, translucent
Color
colorless, white, gray, yellow, pink, brown
Streak
white
Cleavage
perfect
Fracture
uneven
Crystal habit
prismatic, acicular, fibrous, radiating, massive

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Where Elpidite is found

Top localities

  1. Poudrette Quarry10 specimens
  2. Mont Saint-Hilaire3 specimens
  3. Imilchil Cercle1 specimen
  4. Carrière Poudrette1 specimen

About Elpidite

Despite its scarcity, elpidite attracts attention from mineral enthusiasts who value unusual hydration-bearing silicates. The mineral’s delicate appearance and connection to specific geological settings make well-documented specimens highly desirable for display and study. When available, elpidite pairs well with complementary minerals from alkaline or hydrothermal environments, offering a compact yet striking addition to a collection focused on rare silicates and hydrated phases.