A tonne of flour gold from the North Saskatchewan since the 1860s, and grab samples to 3.2 g/t on the Shield.
Placer gold in North Saskatchewan River gravels between Devon and Elk Point (13.6–141 ppb) has yielded about a tonne historically, all fine flour gold under 35 mesh with platinum. On the Shield, shear-zone sulphide horizons near Waugh, Potts and Doze lakes return grab samples to 3.2 g/t. At US$4,300/oz gold the placer is a by-product of gravel washing; lode gold is grassroots.
≈1 t historic placer production; Shield grabs to 3.2 g/t Au
Confidence: Speculative
Placer13.6–141 ppb Au in gravels; ≈1 t produced since the 1860sAGS placer gold ↗
Shield lodeGrab samples to 3.2 g/t Au; anomalies to 770 ppbAGS Bulletin 064 ↗
Where it occurs
North Saskatchewan River Devon–Elk Point
Waugh / Potts / Doze / Pythagoras lakes (Shield)
GEOLOGY: WHAT MAKES A DEPOSIT MORE LIKELY
Fine placer gold reworked from Cordilleran sources into river gravels; orogenic gold in shear-hosted sulphide horizons on the Shield.
Host formations
Quaternary and preglacial gravels · Taltson shear zones
Depth range
0–200 m
Favourable conditions
Gravel bars and preglacial channels with heavy-mineral concentration
Shear zones with quartz-tourmaline veining and sulphides
Prospectivity envelopes on the map (1)
North Saskatchewan placer gold (Edmonton–Devon)Permissive, under-explored
Fine flour gold in Quaternary gravels reworked from Cordilleran sources · 0–15 m
Preglacial and modern gravel bars of the North Saskatchewan
Fine-grained gold recovered historically; by-product of aggregate washing
Source: AGS placer gold studies.
DATASETS THAT TEST THE TARGET
Stack these layers on the integrated map
Discriminating datasets first, then every catalogued public dataset tagged to this commodity. Verified endpoints draw directly; link-only entries open the publisher page.
Surficial geology of Alberta (Map 601 tiles)Alberta Geological Survey · Surficial geology · drawable · verifiedCover type and thickness proxy; controls aggregate, placer, peat and indicator-mineral dispersal trains.Source ↗
Surficial sand & gravel deposits (DIG 2015-0027)Alberta Geological Survey · Surficial geology · drawable · verifiedDirect aggregate and placer target layer; also screens silica sand and construction supply near demand centres.Source ↗
Stream-sediment geochemistry (AGS, 885 sites)Alberta Geological Survey · Geochemistry · drawable · verifiedPathfinder anomalies for uranium, gold and base metals on the Shield and Foothills.Source ↗
Bedrock structures: faults, thrusts, fold axesAlberta Geological Survey · Structure, depth & isopach · drawable · verifiedFault corridors focus brines, helium and MVT fluids and control Foothills coal geometry.Source ↗
Precambrian magnetic basement domains (AGS)Alberta Geological Survey · Aeromagnetics · drawable · verifiedCraton architecture for diamonds (thick cold lithosphere), radiogenic basement for helium, and shear zones for uranium and gold.Source ↗
Metallic mineral occurrences (DIG 2019-0026)Alberta Geological Survey · Mineral occurrences · drawable · verifiedKnown showings to anchor exploration models; density is highest on the Shield and Clear Hills.Source ↗