
Watch stunning 3D animations that reveal how gold-rich fluids behave at these critical junctions, leading to the formation of high-grade ore shoots. Perfect for aspiring prospectors, this quick guide will ignite your passion for mining!
Fault Intersections and Ore Shoots – Where the Pay Zones Begin
Every prospector dreams of striking a rich ore shoot—a concentrated pocket where gold didn’t just pass through, but stopped and stayed.
Those pay zones don’t form randomly. They’re almost always tied to intersections between faults, veins, and fracture systems. This is where nature builds the pressure cooker—and where gold gets trapped.
In Module 3 of Strike Zones and Fault-Controlled Gold 101, we break down how to identify fault intersection zones, why they’re the best gold traps in the system, and how to follow them in the field using natural clues and AI gold maps.
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What Is a Fault Intersection?
A fault intersection occurs when two or more fault lines cross at:
• Sharp angles (90°, 60°, etc.)
• Oblique angles (30–45°)
• Or where a major fault branches or splays
These zones become dilation points—areas where the rock cracks open wider, pressure drops, and hydrothermal fluids dump their load.
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Why Are Intersections Gold-Rich?
Fault intersections create:
• Open voids for fluids to pause
• Low pressure pockets where metals precipitate
• Overprinted alteration, meaning multiple pulses of mineralization stack in one spot
These form ore shoots—zones where gold concentrates vertically or horizontally along one part of the structure.
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What an Ore Shoot Looks Like in the Field
An ore shoot isn’t always wide or deep—but it’s high-grade. You may see:
• A sudden increase in quartz veining
• Oxidized breccia or gossan
• Cross-cutting veinlets
• Mn staining, limonite, or secondary clays
• Hard iron-stained knobs surrounded by soft gouge
Pro tip: Follow small veins to where they converge—that’s often the beginning of a shoot.
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Case Study Examples
• In the Motherlode belt of California, ore shoots formed at the junction of NW-trending strike-slip faults and NE-trending fracture swarms.
• In Arizona’s Little Harquahala Mountains, gold concentrates at the bend between major faults and shear vein systems.
• In Nevada’s epithermal districts, rich shoots occur at fault relays—zones where breaks overlap and pump fluids back into open fractures.
If you’re only following one structure, you may miss the real drop point—the place where the system breathes.
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How to Prospect Fault Intersections
1. Use a satellite view to trace linear ridges, vegetation lines, or shadow cuts
2. Overlay AI fault layers from your gold map to identify where breaks converge
3. Look for:
• Red iron zones
• Clay-filled cracks
• Sudden quartz volume increases
• Offset gravels or scarps at the contact
4. Sample across the intersection point, not just one vein
5. Check vertical and lateral extension—ore shoots often rake along plunging axes
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Using AI Gold Maps to Locate Intersections
The Deep Dig AI Gold Map is your shortcut:
• Turn on fault + vein overlays
• Use terrain slope to identify erosion windows where structures meet at surface
• Cross-check historical claim clusters with intersection zones
Gold tends to pool where energy drops—fault intersections are where that happens.
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🧭 Claim your free Deep Dig AI Gold Map at:
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💬 Comment “Now I’m a Gold Prospector Too!” if you’ve ever found pay in a crack where two faults meet
🔔 Subscribe for Module 4: Reading Boxworks, Slickensides, and Gouge Zones
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