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Karibibite
2 in the gallery
Karibibite is an oxide-arsenate mineral containing iron(III) and arsenic in multiple coordination environments. It forms as a relatively rare phase in hydrothermal settings and often exhibits a dark brown to black hue with a resinous to submetallic lustre. Crystals or intergrowths can appear elongate or tabular, commonly presenting as compact aggregates or radiating aggregates that can be seen embedded in matrix rock. Its composition and structural framework reflect a combination of oxide and arsenate groups, contributing to its distinct optical and textural character.
- Formula
- Fe3+3(As3+O2)4(As3+2O5)(OH)
Where Karibibite is found
About Karibibite
Notable specimens have been reported from Morocco, Chile and Brazil, where hydrothermal activity and mineral-rich deposits provide suitable hosts. Collectors prize karibibite for its rarity and its striking appearance within assemblages that also feature other arsenates and iron-oxide minerals. While not among the most widely distributed minerals, high-quality samples with well-formed crystal habit or sharp lustre offer visual appeal for display or study.
