Where is Red Jasper with Epidote found?
SiO2 (Jasper) with Ca2(Al,Fe)3(SiO4)3(OH) (Epidote)
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Open the appRed Jasper with Epidote 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 Red Jasper with Epidote
United States (California, Oregon)
Various localities, often in areas with past volcanic and metamorphic activity.
Australia
Some jasper deposits, potentially with epidote associations in metamorphic regions.
Brazil
Known for various mineral occurrences, including jasper and epidote in metamorphic settings.
Europe (e.g., Italy, Austria)
Alpine regions and other metamorphic belts can host such combinations.
Collecting tips
- Geological Maps. Consult geological maps of regions known for metamorphic rocks, especially those with mafic compositions or hydrothermal alteration.
- Outcrop Examination. Look for areas with exposed bedrock, particularly in stream beds, road cuts, or mining dumps. The contrasting colors of red and green can be quite noticeable.
- Associated Minerals. Epidote is often associated with quartz, feldspar, amphiboles, and chlorite. Jasper can be found with other cherts or in altered volcanic rocks.
- Hardness Test. Jasper (quartz) is harder than steel (Mohs 7), while epidote is slightly softer (Mohs 6-7). This can help differentiate the components if they are large enough.
Quick Check
- Color:
- Red with green patches/streaks
- Luster:
- Dull to vitreous
- Streak:
- White (for both jasper and epidote)
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