🔎 UNIDENTIFIED Fools gold?

[Blackfoot58]

Possibly old news, but it’s news to me.
I heard that pyrite may become valuable. Samples have proven to contain lithium. A “clean” and cost-friendly extraction method is still needed. No definition given to valuable yet; gravel is valuable at $7/ton, for my example.

 

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[EricTheCat]

Interesting. I hunted an old mine's tilling pile in South Dakota (with permission). They mined lepidolite for the lithium content.

I also collected green tourmaline, blue apatite and mica schist material containing very small garnets there.

A few of the lepidolite specimens I collected:

 

[ConceptualizedNetherlandr]

Interesting. I hunted an old mine's tilling pile in South Dakota (with permission). They mined lepidolite for the lithium content.

I also collected green tourmaline, blue apatite and mica schist material containing very small garnets there.

A few of the lepidolite specimens I collected:
View attachment 2144087

Rocks shaped like pork chops !

 

[ConceptualizedNetherlandr]

To OP, I don't think it is about pyrite in general. More like lithium mineralization happens to be found in that instance with pyrite. Like the Carlin gold deposit, invisible gold in arsenic rich pyrite and arsenopyrite. This dissolved kind of gold is called "Invisible Gold", as it can only be found through chemical analysis. Yet, Carlin Gold trend is one of the world's richest gold mining districts.