Gormanite specimens for sale
3 for sale · $280–$2,500 USD
Gormanite is a phosphate mineral that forms as green to olive-bawn crystals in veins and cavities, often presenting a prismatic or fibrous habit with a vitreous to silky lustre. Its composition includes iron, magnesium, aluminum, and phosphate, and it can occur in oxidized zones alongside other phosphates and iron minerals. Notable specimens have been reported from Brazil and Canada, where mineral collectors prize its distinctive needle-like or tabular crystals that can form bright, eye-catching aggregates. Collectors value Gormanite for its unusual crystal habit and its relatively limited, well-documented localities, which add to its appeal among phosphate minerals.
- Formula
- (Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O
Buy Gormanite specimens
View all 3
About Gormanite
In hand samples, Gormanite crystals can range from greenish to brownish hues, sometimes displaying a subtle pearly sheen on natural surfaces. The mineral tends to occur in masses or rosettes within hydrothermal veins, often associated with other iron and aluminum phosphates. Although not among the most common phosphates, Gormanite has a dedicated following due to its crystallography, localky distinctive forms, and the story of its occurrence in specific mining districts. For collectors building a focused phosphate suite, Gormanite offers a satisfying target with visually arresting, metallic-tinted crystals that photograph well under ambient light.