Where is Pink Opal found?
Opal (variety)
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Open the appPink Opal 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 Pink Opal
Peru
The most significant source of high-quality Pink Opal, particularly from the Andes Mountains. Often referred to as 'Peruvian Pink Opal' or 'Andean Opal'.
USA
Limited occurrences in states like Nevada and Oregon, often associated with volcanic deposits.
Mexico
Some deposits of common opal, including pink varieties, are found in volcanic regions.
Australia
While famous for precious opal, some common opal, including pink hues, can be found.
Collecting tips
- Look for Volcanic Environments. Pink Opal is frequently found in areas with past or present volcanic activity, particularly in the cavities and fissures of rhyolite, andesite, and basalt.
- Identify Silica-Rich Deposits. Search for areas where silica-rich waters would have precipitated, such as hot spring deposits or areas with hydrothermal alteration.
- Examine Nodule and Vein Formations. Pink Opal often occurs as nodules within host rock or as vein fillings. Look for these characteristic formations.
- Distinguish from Other Pink Minerals. Be aware of other pink minerals like rose quartz or rhodochrosite. Pink opal will lack the crystalline structure of quartz and the distinct cleavage of rhodochrosite. Its waxy luster and amorphous nature are key identifiers.
Quick Check
- Color:
- Pale pink to rose-pink, uniform body color.
- Luster:
- Waxy to vitreous.
- Streak:
- White.
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