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Opal from
Unnamed U deposit (1), Hunan Province, China


Description
Quality of samples:not specified / average specimens
Confirmation
Validity:Believed Valid
References
References:Hunan 230 Laboratory, Hunan 305 Geological Team, Wuhan Geological Institution X-ray Laboratory (1976): Acta Geologica Sinica 50(2), 203-204.
Mineral and/or Locality
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