Siderite with Pyrite and Dolomite
- Species
- Siderite
- Crystal system
- Trigonal (hexagonal)
- Hardness (Mohs)
- 3.5–4.5
- Chemistry
- FeCO₃
- Dimensions
- 29 × 13 × 8 cm (11.4 × 5.1 × 3.1 in)
- Weight
- 2.7 kg (6.0 lb)
- Grade
- Museum Grade
- Treatment
- 100% Natural · Untreated
The siderite blades run deep coffee to russet brown, their thin edges glowing honey-amber where light passes through. Most blades tilt in a shared direction, giving the whole face a brushstroke-like sweep. The dolomite reads warm ivory against the dark ground — near-snowcap coverage at the top, scattered flecks below.
Siderite — iron carbonate — grows here as thousands of coffee-brown blades, stacked and overlapping like weathered roof tiles. Over that dark tiled surface, creamy dolomite crystals settled like scattered snow: dense toward the summit, thinning downslope.
Why collectors want this
The appeal is texture in collision: a dark, directional field of blades against bright, randomly scattered white. It carries the palette of a Black Forest cake — and like all good textural specimens, it changes character entirely between across-the-room and arm's-length viewing.
Living with it
Light from the upper left, following the tilt of the blades, makes the honey edges glow in sequence. Carbonate minerals prefer a dry position; the thin blade edges are the fragile part — handle by the base.
Packed by value-graded protection and shipped tracked & insured worldwide (DHL / FedEx / UPS), dispatched within 3–7 business days.
1 in stock