Where is Chlorite-Epidote Quartz found?
SiO2 (Quartz) with associated silicates
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Open the appChlorite-Epidote Quartz 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 Chlorite-Epidote Quartz
Brazil
Known for various quartz varieties, including those with chlorite inclusions, particularly from Minas Gerais.
Pakistan
Himalayan regions are sources of quartz with chlorite inclusions, often forming distinct phantoms.
Austria
Epidote-rich metamorphic rocks are common, and epidote-quartz specimens can be found in the Alps.
USA (various states)
Localities in states like North Carolina, California, and Arkansas can yield quartz with various inclusions, including chlorite and epidote, often in metamorphic or hydrothermal settings.
Norway
Known for epidote occurrences, sometimes associated with quartz.
Collecting tips
- Look for Green Hues. Focus on quartz specimens exhibiting green coloration that is not uniform throughout the crystal, suggesting inclusions rather than intrinsic color.
- Examine Crystal Interiors. Use a loupe or magnifying glass to observe the internal structure for fine green dustings, phantom layers, or distinct crystal habits of chlorite or epidote within the quartz.
- Check Geological Context. Search in areas known for metamorphic rocks (especially greenschist facies) or hydrothermal vein systems, as these environments favor the formation of chlorite and epidote.
- Vein Systems. Explore quartz veins cutting through mafic or pelitic metamorphic rocks, as these are prime locations for finding such associations.
Quick Check
- Color:
- Colorless to white quartz with green inclusions (pale to dark green for chlorite, pistachio to yellowish-green for epidote).
- Luster:
- Vitreous (glassy) overall.
- Streak:
- White (for quartz); green to greenish-white (for chlorite/epidote if powdered, but typically not tested on inclusions).
Explore Chlorite-Epidote Quartz
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