sedimentary

Bumblebee Jasper

Anhydrous Calcium Carbonate with Sulfur and Arsenic (Orpiment/Realgar)

AI-generated identification · may be incorrect

Hardness: 5; Color: Banded yellow, orange, and black; Luster: Waxy to vitreous; Crystal structure: Amorphous/Microcrystalline; Specific gravity: 2.6-2.7

Hardness: 5
Color: Banded yellow, orange, and black
Luster: Waxy to vitreous

Identified July 21, 2026More sedimentary →

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Physical properties

Hardness: 5; Color: Banded yellow, orange, and black; Luster: Waxy to vitreous; Crystal structure: Amorphous/Microcrystalline; Specific gravity: 2.6-2.7

Formation & geological history

Volcanic sedimentary rock formed in fumaroles from the accumulation of volcanic ash, sulfur, and arsenic minerals near volcanos in Indonesia. Formed during the Holocene epoch.

Uses & applications

Primarily used in lapidary arts for cabochons, jewelry, and as a collector's mineral specimen.

Geological facts

Despite the name, it is technically a combination of volcanic ash and carbonate minerals rather than a true jasper (which is silicate-based). It is highly toxic if inhaled or ingested due to its arsenic (orpiment) content.

Field identification & locations

Identified by its distinctive 'bumblebee' stripes of bright yellow and black. Found exclusively at Mount Papandayan in West Java, Indonesia. Collectors should handle it with care and wash hands after use.