Römerite specimens for sale
1 for sale · $195 USD
6 in the gallery
Römerite is a hydrated iron sulfates mineral with a tristiline crystal system. It forms as brown, yellow, or violet translucent masses and grains that exhibit a vitreous to resinous lustre and uneven fracture. The mineral’s habit is typically granular or massive, and it can display a perfect cleavage, reflecting its sulfate-rich composition and hydration state.
- Formula
- Fe2+Fe3+2(SO4)4·14(H2O)
- Classification notes
- Hydrated Acid and Sulfates
Key characteristics
- Crystal system
- triclinic
- Mohs hardness
- 3–3.5
- Specific gravity
- 2.15
- Luster
- vitreous, resinous
- Transparency
- translucent
- Color
- brown, yellow, violet
- Cleavage
- perfect
- Fracture
- uneven
- Crystal habit
- granular, massive
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About Römerite
Notable specimens have been described from Germany and Peru, where secondary sulfide-rich environments and sulfate-bearing solutions contribute to Römerite development. Collectors value specimens for their distinctive color range and the way hydration layers interact with light, producing subtle internal complexity in miniature crystals and aggregates. While Römerite is not among the hardest minerals, its relatively approachable Mohs hardness and unique optical properties offer appealing challenge for careful handling and display.