Where is Boxwork Jasper found?
Jasper (silica with iron oxides)
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Open the appBoxwork Jasper occurs in specific geological environments. Knowing where to look, and in what kind of rock, is the difference between going home empty-handed and finding a great specimen.
Where to find Boxwork Jasper
Western Australia
Known for high-quality Boxwork Jasper, particularly from areas associated with iron ore deposits and ancient weathering profiles.
United States (various states)
Occurrences reported in states like Arizona, California, and Oregon, often in areas with volcanic activity or hydrothermal alteration.
South Africa
Found in regions with significant iron formations and ancient geological structures.
Collecting tips
- Look for distinctive patterns. The most crucial identification feature is the cellular or 'boxwork' pattern. Look for interconnected angular or curvilinear structures.
- Check for hardness. Jasper is a form of quartz, so it will be hard (Mohs 6.5-7) and will scratch glass. This helps differentiate it from softer minerals.
- Observe color variations. The presence of red, brown, or yellow hues, often in combination, is characteristic of iron oxide-rich jasper.
- Examine geological context. Search in areas known for hydrothermal alteration, ancient weathering, or iron-rich sedimentary/metamorphic rocks.
Quick Check
- Color:
- Red, brown, yellow, orange with cellular patterns
- Luster:
- Dull to waxy
- Streak:
- White (for pure chalcedony) or reddish-brown (if significant iron oxides are present and abraded)
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