mineraloid
Bumblebee Jasper
Anhydrite-Aragonite mixture with Orpiment and Realgar
Hardness: 4-5 Mohs. Color: Yellow, orange, black, and grey banding. Luster: Waxy to vitreous. Crystal Structure: Orthorhombic (anhydrite/aragonite components).
- Hardness
- 4-5 Mohs
- Color
- Yellow, orange, black, and grey banding
- Luster
- Waxy to vitreous
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Physical properties
Hardness: 4-5 Mohs. Color: Yellow, orange, black, and grey banding. Luster: Waxy to vitreous. Crystal Structure: Orthorhombic (anhydrite/aragonite components).
Formation & geological history
Formed in volcanic fumaroles or vents where silica, sulfur, and carbonate minerals precipitate together. Specifically found near Mount Papandayan in West Java, Indonesia.
Uses & applications
Primarily used in jewelry as cabochons, for ornamental carvings, and as a popular collector's specimen due to its unique vibrant banding.
Geological facts
Despite its name, it is not a true Jasper (silicate) but a mixture of volcanic minerals. The bright orange and yellow colors come from arsenic minerals like orpiment and realgar, which are toxic if handled improperly or inhaled as dust.
Field identification & locations
Identified by its distinctive 'bumblebee' yellow and black stripes. Found exclusively in Indonesia. Collectors should look for high contrast banding and be aware of the material's softness compared to true jasper.
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