Reddingite specimens for sale
2 for sale · $465–$3,500 USD
3 in the gallery
Reddingite is a hydrated phosphate mineral with the chemical formula Mn2+3(PO4)2·3(H2O). It typically presents as colorless to brown or yellow specimens and has a vitreous to resinous lustre. The mineral crystallizes in the orthorhombic system and commonly forms granular aggregates with indistinct cleavage and an uneven fracture, offering modest, approachable crystals for study. Its hardness is around 3.5 on the Mohs scale, and its specific gravity is near 3.1.
- Formula
- Mn2+3(PO4)2·3(H2O)
- Rarity
- Rare
- Stability
- Stable
- Collector interest
- Moderate Interest
- Classification notes
- Hydrated Phosphates, etc
Key characteristics
- Crystal system
- orthorhombic
- Mohs hardness
- 3.5
- Specific gravity
- 3.1
- Luster
- vitreous, resinous
- Transparency
- transparent, translucent
- Color
- colorless, white, brown, yellow
- Streak
- white
- Cleavage
- indistinct
- Fracture
- uneven
- Crystal habit
- granular
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About Reddingite
Notable specimens have been recovered from Brazil, where localized phosphate-rich environments enable manganese- and phosphate-rich assemblages to form. Collectors often seek Reddingite for its subtle color range and translucency under suitable lighting, as well as its relatively straightforward crystallography compared with more delicate phosphates. The mineral’s hydrated nature can influence its stability in humidity, so careful storage helps preserve its appearance. For those cataloging hydrated phosphates or manganese-bearing minerals, Reddingite provides a window into mineral hydration states and the diversity of orthorhombic phosphates found in Brazilian localities.