headbut
Paul
Hi Guys , got this in my tumbling rock lot & noticed this rainbow affect inside, well when its wet, it looks stunning inside, any ideas what this is ?
Heatho said:Cool rock headbut, first and last pic look sort of like Opal, specific gravity test for that 1 I think. Opal is 2.1 and Zircon is 4.5. I was reading on DIGS the other day that there are opal deposits near Sydney, not gem quality but still here.
Will be interested to see what the more experienced members say.
Keen Ken said:Last image shows the optical charictoristics of labradorite feldspar. Other images show the internal structure that one would expect to find in the same.
Syndyne said:Heatho said:Cool rock headbut, first and last pic look sort of like Opal, specific gravity test for that 1 I think. Opal is 2.1 and Zircon is 4.5. I was reading on DIGS the other day that there are opal deposits near Sydney, not gem quality but still here.
Will be interested to see what the more experienced members say.
G'day guys,
I know a little bit about the opal finds around the Sydney area Heatho. My father used to shoot rabbits on a property out near Mandurama (South of Bathurst and not far from Neville) called Sunny Corner back in the fifties and there was an old section down behind the property called Rocky Bridge Creek. That was Australia's first opal discovery and subsequent mine. It's just a bit of a tunnel on the side of a hill going into an ancient Basalt layer that had quite a bit of Amber coloured opal of small vug and nodule types.
It would have to have been found and worked pre 1880's as we had our first opal found in the 1890's here. I think White Cliffs may have been the first major opal field if I recall correctly.
headbut17: Not real sure of the rock type Paul? Looks pretty good though! That opalescence is very intriguing. I hope you track down your answer.
All the best,
Shauno.
Heatho said:Awesome info Shauno, that Sunny Corner really is an interesting place, I've been there a few times, never knew of the Opal there though. The deposit I read about is near Brooklyn at the mouth of the Hawkesbury under sandstone overhangs. This forum is great.
I agree with you guys after looking at Labradorite pics.
headbut17 said:Thanks Guys , I agree when looking at Labrodorite , it looks exactly like my rock
Would love some more info on thisAwesome info Shauno, that Sunny Corner really is an interesting place, I've been there a few times, never knew of the Opal there though. The deposit I read about is near Brooklyn at the mouth of the Hawkesbury under sandstone overhangs. This forum is great.
I agree with you guys after looking at Labradorite pics.
Would love more info on the brooklyn deposit, also I would like to check out this location at rocky bridge Creek I believe I have the close coordinates to the first opal mine they had thereAwesome info Shauno, that Sunny Corner really is an interesting place, I've been there a few times, never knew of the Opal there though. The deposit I read about is near Brooklyn at the mouth of the Hawkesbury under sandstone overhangs. This forum is great.
I agree with you guys after looking at Labradorite pics.
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