Where is Included Quartz found?
Quartz (SiO2) with inclusions
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Open the appIncluded 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 Included Quartz
Brazil
Renowned for producing a wide variety of included quartz, including rutilated quartz, phantom quartz, and lodolite (garden quartz).
Arkansas, USA
Famous for clear quartz crystals, often containing chlorite or hydrocarbon inclusions.
Madagascar
Known for various quartz types, including those with tourmaline and rutile inclusions.
Pakistan
Produces high-quality quartz with various inclusions, including tourmaline and chlorite.
Switzerland (Alps)
Historical source of fine quartz crystals, sometimes with chlorite or other mineral inclusions.
Collecting tips
- Hydrothermal Veins. Look for quartz crystals in hydrothermal vein deposits, especially in areas with granite or metamorphic rocks, as these environments are conducive to the growth of quartz with various mineral inclusions.
- Pegmatites. Explore pegmatite dikes, which are known to host large, well-formed quartz crystals and a variety of accessory minerals that can become inclusions.
- Mine Dumps and Tailings. Check mine dumps from areas known for quartz or other mineral production, as included quartz specimens may be overlooked or discarded.
- Riverbeds and Alluvial Deposits. Water-worn included quartz can be found in riverbeds and alluvial deposits, often exhibiting rounded forms but still showcasing internal features.
Quick Check
- Color:
- Variable, often clear with colored inclusions.
- Luster:
- Vitreous.
- Streak:
- White.
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