$450Median
43Sold (12 mo)
$150Last sale
Mordenite specimens for sale
44 for sale · $45–$20,000 USD
81 in the gallery
Mordenite is a hydrated aluminosilicate mineral belonging to the zeolite group. It typically crystallizes in the orthorhombic system as prismatic to tabular forms, commonly colorless to pale yellow, and it often shows a vitreous to resinous lustre. The mineral’s structure features a three-dimensional framework with large channel systems that host water molecules and exchangeable cations, giving mordenite its characteristic porosity. Crystals can be modest in size, but association with other zeolites and secondary minerals is common in native deposits.
- Formula
- (Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
- Rarity
- Common
- Stability
- Stable
- Collector interest
- Moderate Interest
- Classification notes
- Zeolite framework aluminosilicate (tectosilicate); framework silicate with porous structure, Strunz 9.GD
Key characteristics
- Crystal system
- orthorhombic
- Mohs hardness
- 5
- Specific gravity
- 2.12–2.15
- Luster
- vitreous, silky
- Transparency
- transparent, translucent
- Color
- colorless, white, gray, yellow, pink
- Streak
- white
- Cleavage
- perfect
- Fracture
- uneven
- Crystal habit
- prismatic, acicular, fibrous, radiating, granular, massive
Buy Mordenite specimens
View all 44Where Mordenite is found
Top localities
- Nashik36 specimens
- Jalgaon13 specimens
- Jalgaon District10 specimens
- Rat's Nest Claim4 specimens
- Madhya Pradesh3 specimens
- Ahmednagar District2 specimens
- Madhyapradesh2 specimens
- Afghanistan1 specimen
- India1 specimen
- Bombay Quarry1 specimen
About Mordenite
Notable occurrences include classic localities in India and Madagascar, where mordenite-bearing rocks are associated with volcanic tels and hydrothermal settings. Specimens from other destinations such as the USA, New Zealand, and Italy further illustrate the mineral’s widespread distribution. Collectors value mordenite for its clean, transparent to pale tones, crisp crystal forms, and the curiosity of its hydrated structure; careful handling helps preserve its delicate water content and surface integrity. While it may appear in matrix or as isolated crystals, the mineral’s appeal rests on its scientific significance as a zeolite and its graceful presence among mineral collections.
