

Ludlamite specimens for sale
16 for sale · $175–$12,500 USD
59 in the gallery
Ludlamite is a hydrated iron phosphate mineral with the formula Fe2+3(PO4)2·4H2O. It typically forms as soft, vitreous to pearly crystals in phosphate-bearing hydrothermal environments, often presenting a pale green to blue-green color and a translucent to transparent appearance in well-formed specimens. Crystals can show a platy or tabular habit, sometimes forming aggregates or delicate sprays that highlight its subtle luster and mineralogical clarity. Notable specimens have been collected from Bolivia, Mexico, the United States, Brazil, and the United Kingdom, where secondary mineral localities and detailed crystallization histories contribute to its identification and appeal.
- Formula
- Fe2+3(PO4)2 · 4H2O
- Rarity
- Rare
- Stability
- Moderately Stable
- Collector interest
- Moderate Interest
- Classification notes
- Phosphate; hydrated iron phosphate, ludlamite group
Key characteristics
- Crystal system
- monoclinic
- Mohs hardness
- 3.5
- Specific gravity
- 3.12–3.19
- Luster
- vitreous, pearly
- Transparency
- transparent, translucent
- Color
- green, yellow
- Streak
- white, green
- Cleavage
- perfect
- Fracture
- uneven
- Crystal habit
- prismatic, tabular, granular, massive
Buy Ludlamite specimens
View all 16Where Ludlamite is found
Top localities
- Blackbird mine10 specimens
- Blackbird Mine8 specimens
- West Camp8 specimens
- Huanuni mine7 specimens
- Santa Eulalia Mining District6 specimens
- San Antonio Mine3 specimens
- Wheal Jane3 specimens
- Brazil1 specimen
- Cabeza do Cachorro Mine, São Gabriel da Cachoeir1 specimen
Guides
All guidesAbout Ludlamite
Collectors value ludlamite for its crisp color, high hydration, and the way it displays in hand sample or cabinet settings. While often found in association with other phosphate minerals, its hydration state and glassy shine make it a distinctive presence in a display case, especially when paired with complementary minerals that illuminate its pale green tones. The mineral’s relative rarity and the finesse of its crystal forms add a layer of interest for micromounts and larger display pieces alike, inviting careful handling to preserve its delicate hydration and clarity.






















