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Discussion: Dubbo rocks to be mined?

in: Orienteering; General

May 25, 2021 10:01 PM # 
May 25, 2021 10:41 PM # 
The irony is that Chinese investors will probably end up funding the projects.

How long before existing rock maps are instead turned into mining maps (though presumably mining activities will mean we're precluded from those areas for decades)?
May 25, 2021 11:05 PM # 
Don't think 21st century mining produces such interesting terrain afterwards as 19th century mining did.

The project in the news story is due south of Dubbo and wouldn't affect the mapped areas, but if that type of terrain is favourable for rare-earths mining it might not be the last such project.
May 25, 2021 11:07 PM # 
There are no shortage of rocks in the outback.
May 28, 2021 5:18 AM # 
I am guessing the economically viable mining would be in the colluvium sand slopes below the outcrops rather than in the rock outcrops. Any geologists like to comment?
May 28, 2021 5:43 AM # 
It is a metal-enriched volcanic/subvolcanic body called a "laccolith" intruded sometime in the Jurassic era. It measures about 600m x 900m at surface and has been drilled down to around 120m.

It is a very unusual occurrence, made of trachyte-syenite, not granite. There are no other rare-earth projects in that general area - Dubbo/Orange/Bathurst/Parkes/Goulburn.

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