Geochemistry · Victoria
Victoria Drillhole assays
Victoria drillholes, coloured by the most gold found anywhere down each hole.
What it shows
Drillholes across Victoria, coloured by the most gold found anywhere down the hole: low (background, under 10 ppb of gold), anomalous (10 to 100 ppb), high (100 to 1000 ppb), or bonanza (1000 ppb and over). Those cutoffs are in parts per billion (ppb), where 1000 ppb is about one gram of gold in a tonne of rock. Each point is one drill collar, the spot on the surface where a hole was put down and logged by the state geological survey. The reading shown is the best result from any depth in that hole, so a bonanza collar means the drill went through high-grade gold somewhere beneath it. Drilling is the most direct measurement there is of what is actually in the ground, so these mark where hard-rock gold has been confirmed rather than only suggested by surface sampling.
Putting this on your map
Taking a layer from the Library onto a stack, and tuning how it draws, is a short guided tour on your own map.
How do I add map layers to Patchly?More for Victoria
- State setup Pro Victoria
8 layers 2 map setups
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Victoria 4WD Tracks Victoria four-wheel-drive tracks, with the closures the road register holds. -
Victoria Burnt Ground Where Victoria has burnt in the last three years. -
Victoria Contours Topographic contour lines at 10 m over Victoria. -
Victoria Deep Leads Victoria deep leads: the buried Tertiary river channels that carried gold. -
Victoria Faults & Veins Victoria goldfields structure: faults, quartz veins, dykes and fold axes.