Prime Meridians – Is Your Project In The “Gold Window”?

This week in Pierce Points:

A mystery buyer emerged for $1 billion in copper assets. An “English investment fund” will reportedly buy mines in Chile

Japan flipped the nuclear switch. The Sendai one reactor became the country’s first plant to be re-started following Fukushima.

Natural gas producers got two new markets. India is about to announce price increases, and Iran is auctioning projects.

Experts warned on South African platinum. Output will fall by 600,000 oz next year, according to World Platinum Investment Council.

Is Your Project In The “Gold Window”?

In the back of my field notebook, I always save room for charts. Cutting and pasting a few of the most critical figures I constantly refer to when looking at new projects. 

And this month, there’s another one to add. It may look complex — but there are a few elegantly simple takeaways. Ones that could help pinpoint the next big global gold discovery. 

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The critical thing here is the red line at the very top. Which shows the concentration of gold in seawater (as measured from marine pyrite samples) — gathered by researchers from the Centre of Excellence In Ore Deposits in a study published recently in Earth and Planetary Science Letters. 

The study found that there are three periods in geologic history that show unusually high levels of seawater gold: one peak between 3.0 and 2.8 billion years ago, another at 980 million years, and another at 520 million years. You can see the spikes in the red line during these times. 

The authors theorize that these periods in Earth’s development saw a lot of gold circulating through the near-surface environment. Perhaps because of factors like increased volcanic activity or chemical shifts in the oceans. 

The implication being that these times — or shortly thereafter — were best for forming big gold deposits. Simply put, there was a lot of gold around to be incorporated into rich lodes within rock layers. 

For explorationists, this could be a key observation. Suggesting that project areas hosting rocks within these age windows are most ripe for big discoveries. 

It’s of course not a lock (nothing is, unfortunately) — but these are the kind of high-level filters that can help us winnow down to the properties with the highest chance for large finds.

Clip and save this one.

Here’s to a window of opportunity, 

Dave Forest

dforest@piercepoints.com / @piercepoints / Facebook

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