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Evidence-led Atlas · BOU004Stable field context and time-sensitive visitor guidance are separated. No map boundary, mine status or access permission is inferred.
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BOU / Field record · BOU011

Koroit

Opal Field in the Queensland Field Explorer. Stable geology/history is separated from current visitor guidance checked 2026-09-11; no live road/open status or permission is inferred.

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Evidence level

Research Field Record

No specimen provenance, mine status, field boundary or current access permission is inferred from this label.

Stable context

GIA places Koroit in the Cunnamulla Mineral District about 77 km north-northeast of Eulo.

Stable context

GIA records opal discovery at Koroit in 1897 and documents the field as a distinctive boulder-opal source.

Current official visitor layer · checked 2026-09-11

What the reviewed official sources support now.

BOU does not publish a public Koroit fossicking area or mine-access status. Use current Queensland land/tenure permission rules and obtain any required written permission before fossicking; historical field evidence is not visitor permission.

Visitor guidance class

Research locality; no public access asserted

This describes the source-backed publication scope of this BOU route. It is not a live open/closed status.

Camping

Not asserted by this route

Camping rules are stated only where the reviewed official source supports them. A camping permit never replaces a fossicking licence.

Licence + permission

Current licence required; actual land/tenure permission still matters

Where land is not specified fossicking land, current Queensland guidance can require written landholder and mining-tenure permission. Historical mining evidence is never permission.

Road / travel status

Not republished by BOU

BOU does not state a live road, weather or closure condition. Use QLDTraffic and the locality/rules pages immediately before travel.

Where you can fossickBOU011-SRC-002 · checked 2026-09-11 · source updated 2025-06-19Western opal fieldsBOU011-SRC-004 · checked 2026-09-11 · source updated 2016-08-17Current fossicking licence / camping permitBOU011-SRC-001 · checked 2026-09-11 · source updated 2026-08-13Where you can fossick / permission rulesBOU011-SRC-002 · checked 2026-09-11 · source updated 2025-06-19Personal protection and safetyBOU011-SRC-003 · checked 2026-09-11 · source updated 2024-07-08QLDTraffic current road informationBOU011-SRC-008 · checked 2026-09-11 · source updated live service

Before travel: re-check the current fossicking licence, land and mining-tenure permissions, locality-specific camping/access rules, personal safety guidance and QLDTraffic. Conditions and permissions can change after this BOU check date.

Atlas relationships

How this record connects.

Only documented regional or distance relationships are listed; the Atlas does not infer exact geographic boundaries.

  • Koroit is about 77 km north-northeast of Eulo according to GIA.
  • Yowah is about 10 km south-west of Koroit according to GIA.

Relationship sources · BOU-SRC-007

Source ledger

Open the evidence.

These source links support this route’s claims. Their photographs and other media are not automatically licensed for reuse.

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Use the full Fields index for systematic comparison.

Wintontown and field hubQuilpietown and field hubYowahtown and field

Formation connection · BOU005

What this field contributes to the model.

GIA documented ironstone concretions of different sizes in soft sandstone at the Koroit operation it visited, with opal also occurring along linear structures as seams. This is a Koroit observation, not a rule for every Queensland field.

Field-scoped evidence · BOU-SRC-007

Compare formation layers

Specimen bridge

This field is context, not specimen provenance.

No current cabinet specimen is assigned to this field. Geological/history context must not be presented as specimen provenance.

No published specimen provenance link

Koroit

No current specimen cabinet record is assigned to this field.

Field geology can explain the locality. It must not be reverse-engineered into origin for an unlinked stone.

ICU / CONNECTED DISCOVERY

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