Quintinite specimens for sale
1 for sale · $650 USD
4 in the gallery
Quintinite is a hydrated chloride mineral with a magnesium-rich composition, typically forming as small, intricate crystals with a pale or colorless to whitish appearance. It often displays a vitreous to adamantine luster and a tendency to occur in microcrystalline crusts or delicate tabular aggregates, reflecting its layered structure and hydration. Specimens are most notably reported from Brazil and Russia, where hydrothermal or secondary alteration environments have fostered its crystallization in association with other magnesium-rich chlorides and halides.
- Formula
Mg₆(OH)₈Cl₂ · 4H₂O - Rarity
- Rare
- Stability
- Stable
- Collector interest
- Moderate Interest
- Classification notes
- Carbonate; hydrotalcite supergroup, quintinite group
Key characteristics
- Crystal system
- trigonal
- Mohs hardness
- 2
- Specific gravity
- 2.1–2.16
- Luster
- vitreous, pearly
- Transparency
- transparent, translucent
- Color
- colorless, white, yellow, orange, brown
- Streak
- white
- Cleavage
- perfect
- Fracture
- uneven
- Crystal habit
- tabular, prismatic, granular, massive
Buy Quintinite specimens
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Where Quintinite is found
Top localities
- Afghanistan1 specimen
- Kola Peninsula1 specimen
About Quintinite
Collectors value quintinite for its fine, minute crystals and the way hydration water can influence color and transparency. Though not as widely distributed as some halide minerals, its occurrence in high-quality pockets makes it a sought-after addition to complex mineral suites. The mineral’s compact habit and subtle optical properties reward careful handling and display alongside related magnesium chlorides and hydroxides, offering a window into hydrothermal processes and secondary phase formation.