SKU: P_26-6_01
Aesthetic, needle-like cluster of gypsum crystals and halite. The specimen is distinguished by its intense orange color caused by inclusions of iron oxides in the gypsum. At many terminations, textbook examples of swallowtail twinning are clearly visible. Main Features: needle-like habit; swallowtail twinning; intense orange color. Condition: Good. The crystals are mostly intact and sharp; minimal, natural imperfections are visible.
Price: 23 EUR (99 PLN)
Availability: In stock
Location: Solno mine, Inowrocław, Inowrocław County, Kuyavian-Pomeranian Voivodeship, Poland
Size: 45 x 21 x 36 mm
Weight: 16 g
Chemical formula: CaSO₄·2H₂O
Crystal system: Monoclinic
Mohs hardness: 2.0