sedimentary

Bumblebee Jasper

Anhydrite with Sulfur, Hematite, and Orpiment (SiO2/CaSO4 mixture)

AI-generated identification · may be incorrect

Hardness: 3-5 (Mohs scale), Color: Yellow, orange, black, and grey banding, Luster: Vitreous to greasy, Crystal Structure: Trigonal/Amorphous, Density: ~2.6

Identified June 26, 2026More sedimentary →

Explore Bumblebee Jasper in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Hardness: 3-5 (Mohs scale), Color: Yellow, orange, black, and grey banding, Luster: Vitreous to greasy, Crystal Structure: Trigonal/Amorphous, Density: ~2.6

Formation & geological history

Formed in the fumaroles of active volcanoes where steam and heat deposit mineral layers. Specifically associated with the Mount Papandayan volcano in Indonesia. It is not a true jasper but a combination of volcanic matter and anhydrite.

Uses & applications

Primarily used in the jewelry industry for cabochons and as a collector's specimen due to its unique vibrant banding. Its toxicity due to arsenic content makes it unsuitable for industrial or construction use.

Geological facts

Technically not a jasper but a calcium carbonate mineral found specifically in West Java, Indonesia. The yellow and orange bands contain Orpiment, which is an arsenic sulfide mineral that is toxic if inhaled as dust.

Field identification & locations

Identify by the distinct bright yellow and orange sulfur bands mixed with black volcanic ash. Can be found in volcanic regions of Indonesia. Collectors should handle raw specimens with care and wash hands after use.