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Kottigite specimens for sale
4 for sale · $300–$650 USD
4 in the gallery
Kottigite is a zinc arsenate mineral that forms as hydrated crystals. It typically presents a blue-green to pale green color and can exhibit translucent to transparent lustre in well-formed specimens. Its crystalline habits are often tabular or prismatic, with a vitreous to resinous shine when well crystallized, and it occurs as delicate aggregates and short prisms in oxidized zones of arsenic-bearing rocks.
- Formula
- Zn3(AsO4)2 · 8H2O
- Rarity
- Rare
- Stability
- Stable
- Collector interest
- Moderate Interest
- Classification notes
- Arsenate mineral; zinc arsenate hydrate
Key characteristics
- Crystal system
- monoclinic
- Mohs hardness
- 2.5
- Specific gravity
- 3.31–3.33
- Luster
- vitreous, pearly
- Transparency
- transparent, translucent
- Color
- colorless, white, gray, brown, red, violet, pink
- Streak
- white
- Cleavage
- perfect
- Fracture
- uneven
- Crystal habit
- prismatic, acicular, fibrous, radiating, granular, massive
Buy Kottigite specimens
View all 4Where Kottigite is found
Top localities
- Ojuela Mine4 specimens
About Kottigite
Notable specimens of kottigite come from localities in Mexico, where secondary arsenate minerals develop in oxidized environments. Specimens are prized by collectors for their rarity and for the way hydration can influence color and termination, yielding appealing, gem‑like crystals under suitable lighting. Kottigite is frequently encountered alongside other zinc and arsenate minerals in secondary assemblages, making selective collecting in mineral-rich oxidized zones rewarding for material that shows clean, well‑formed crystals.
Collectors value kottigite for its optical character and relative scarcity in good crystallographic form. The mineral’s hydration state and hydration-induced color variation add interest, while its association with arsenate minerals provides a window into hydrothermal and secondary alteration processes. When present as pristine, well‑terminated crystals, kottigite is a distinctive addition to a careful, display-focused collection.
