Monteregianite specimens for sale
1 for sale · $1,500 USD
3 in the gallery
Monteregianite is a hydrated sodium-potassium calcium yttrium silicate mineral. It forms delicate, often translucent crystals that can appear colorless to pale yellow, typically presenting a platy or tabular habit with a vitreous to resinous luster. The mineral’s defining feature is its complex silicate framework and water content, commonly seen in mineral specimens collected from Canadian localities where hydration and unique alteration processes preserve intricate crystal forms. Specimens from notable Canadian deposits have drawn collectors for their rarity and the elegance of tiny, shimmering crystals that sometimes accrue in small aggregates.
- Formula
- (Na,K)6(Y,Ca)2Si16O38 · 10H2O
- Rarity
- Ultra Rare
- Stability
- Stable
- Collector interest
- High Interest
- Classification notes
- Silicate; hydrated alkali yttrium silicate
Key characteristics
- Crystal system
- orthorhombic
- Mohs hardness
- 4
- Specific gravity
- 2.45–2.47
- Luster
- vitreous, pearly
- Transparency
- transparent, translucent
- Color
- colorless, white
- Streak
- white
- Cleavage
- perfect
- Fracture
- uneven
- Crystal habit
- tabular, bladed, radiating
- Micro-mount only
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Where Monteregianite is found
Top localities
- Poudrette Quarry2 specimens
- Carrière Poudrette1 specimen
About Monteregianite
Collectors seek Monteregianite for its rarity, distinctive composition, and the way the mineral complements other silicate species in display cases. Its association with specific hydrothermal or alteration environments adds contextual interest, making it a rewarding addition for those building suites of alkali and yttrium-bearing minerals. When displayed alongside related minerals, Monteregianite can provide insight into hydration states and the interplay of alkali metals within silicate lattices, enhancing both educational value and aesthetic appeal.