Wintinna Coal Project
Location & Setting
Regional location
Why the setting works
- Flat terrain (~120–150 m AHD); open scrub on pastoral lease
- ~60 km east of the Adelaide–Darwin railway & Stuart Highway
- Ten persistent, flat-lying seams (dip <2°), no faulting, no weathering
- Consistent 140–180 m overburden — ideal for large open-cut
- CO₂ sequestration option in the East Officer Basin (~100 km)
Route to market & infrastructure
Coal Resource & Geological Model
Seam inventory — modelled seams
| Seam | M&I (Mt) | Avg thk (m) | Roof (m) | Picks |
|---|
JORC resource by category
M&I resource by seam
Official mineral resource map (2008)
Seam thickness vs roof depth
Cross-Sections & Section Location Plan
Interpreted seam geometry from the official 2008 resource statement (McElroy Bryan). Seventeen NW–SE section lines (EW01–EW17) run across the deposit; the location plan below shows where each lies relative to the resource area, and two representative sections — EW01 (north) and EW06 (central) — are reproduced beneath it.
Section location plan — 17 section lines (EW01–EW17)
Section A — EW01 (northern)
Section B — EW06 (central)
Drilling Database
Holes by era
Holes by tenement
Depth distribution
Drill method
Coal-data coverage
Database at a glance
Coal Quality & Product Suitability
Low-rank sub-bituminous coal: high inherent moisture but low ash, low sulphur and high volatile matter — a strong feedstock for gasification and Coal-to-Liquids. Washing lifts calorific value and cuts ash; sulphur (largely organic) rises down-section into the basal seams.
Calorific value — raw vs washed
Ash & sulphur — washed product
Development Pathway & Economics
The value — 2026 cost basis
How this read-across is derived
The 2008 PFS — the studied base case
Value vs diesel price — 2026 cost basis
Integrated CTL + power complex
Process concept — Jacobs block flow (gasification → Fischer-Tropsch → diesel + power)
Market, Peer & Regulatory Context
Project history & study lineage
De-risking ledger
3D Coal Ore-Body Model
Interactive model built from the real drillhole database — the 105 seam-bearing holes (of the 150 in the database) and 1,224 of the 1,240 seam intercepts, rendered directly on each hole. Seams are shown as solid bodies (extruded to average thickness) that you can recolour by coal quality — calorific value, ash or sulphur — and cut with a live, draggable cross-section. Toggle and isolate seams, read depths off the scale, and rotate / zoom / pan. Best viewed full-screen.
Data Room — What's on File
Four decades of technical work assembled into a sale-ready data room. A selection of the key documents underpinning the figures above.
Enquiries & data-room access
Opal Resources — info@opalresources.com.au · www.opalresources.com.au. Process: NDA → full data-room access → management session & site visit. Expressions of interest invited.