Gemstone district
Queensland Boulder Opal Fields
Queensland fields produce Opal seams naturally associated with ironstone matrix, including boulder Opal.
Evidence-backed overview
The place, clearly defined
Queensland fields produce Opal seams naturally associated with ironstone matrix, including boulder Opal.
Geological context
How the occurrence is understood
Queensland fields produce Opal seams naturally associated with ironstone matrix, including boulder Opal.
Bidirectional relationships
Documented gemstones
Occurrence and production are separate claims. A production label is date-bounded and does not guarantee quality, origin determination, or market value.
Opal
Recent, date-bounded evidence documents active production. This status requires periodic review.
Current status is date-bounded to the cited 2024 government or government-science evidence; continuous activity at every operation is not inferred.
Evidence ledger
Sources & verification
Sources are deduplicated across the geographic record. Current-production claims receive explicit review dates; a map point never substitutes for geological or production evidence.
- [1]Australian Mineral Facts: Opal.
Geoscience Australia
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