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Collection Tier:
Tier 3

Rocks and Minerals ➔ Opal

Identifier:
2015.1.318
Description:
Opal is a silicate and a type of quartz. It is formed when silica fills small spaces in other rocks and is colorless in its pure form. This specimen is white in color and reflects different colors in the light. 

Formula: SiO2 · nH2O

 
Source:
Museum Collection
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