Where is Peridot found?
Olivine
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Open the appPeridot 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 Peridot
San Carlos Apache Reservation, Arizona, USA
One of the most significant sources of gem-quality peridot, found in basaltic lavas.
Zabargad Island (St. John's Island), Red Sea, Egypt
Historically important source, known for fine-quality peridot, found in peridotite xenoliths.
Myanmar (Burma)
Produces high-quality, large peridot crystals, often found in association with serpentine.
Pakistan (Kaghan Valley)
Known for producing vibrant green peridot, often found in peridotite xenoliths within volcanic rocks.
China
Significant producer of peridot, particularly in the Changbai Mountains region.
Norway (Åheim)
Major industrial source of olivine, primarily for refractory and metallurgical uses, found in dunite.
Collecting tips
- Look in Volcanic Areas. Peridot is commonly found in basaltic lava flows and volcanic bombs, especially in areas with recent volcanic activity. Look for dark, vesicular rocks.
- Examine Ultramafic Rocks. In areas with exposed peridotite or dunite (ultramafic igneous rocks), olivine can be a major constituent. These rocks are typically dark green to black.
- Check Stream Beds and Alluvial Deposits. Due to its relative hardness and density, peridot can be found as alluvial pebbles in stream beds downstream from its primary source.
- Identify Associated Minerals. Peridot is often found with other mafic minerals like pyroxene, plagioclase feldspar, and magnetite.
- Beware of Alteration. Olivine readily alters to serpentine, iddingsite, or chlorite, especially in the presence of water. Fresh, unaltered olivine is more desirable for collection.
Quick Check
- Color:
- Yellowish-green to pure green
- Luster:
- Vitreous to oily
- Streak:
- White
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