Dunkheld Quarry, Bathurst, NSW
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Not the greatest image due to a poorlight and old camera technology.
This is the exposed top of Steam Vent 4. The steam vents are marked by an cone- shaped
zone of hydrothermally altered rock.
Here fresh basalt surrounds a zone of serpentitic clays.
These are swelling clays and they are a pain in the
ar.... for the quarry
as they gum up the crusher if it gets in. |
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