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Locality help: "Sir Dominique Mine, South Australia"

Posted by Vik Vanrusselt  
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Vik Vanrusselt February 12, 2018 02:20PM
Hello all,

I've recently acquired a flat of about 200 micromount specimens.

One of them is a pseudomalachite from "Sir Dominique Mine, South Australia".

I haven't been able to find this locality on Mindat yet, but I did find a few references (see below).

Should this locality be added to Mindat?

Thanks,

Vik

- http://www.micromineral-market.com/Shop/pseudomalachite-australie-sir-dominique-mine.html?___store=micromineralmarket_en&___from_store=micromineralmarket_fr

- http://www.micromineral-market.com/Shop/pseudomorphose-azurite-malachite-australie-sir-dominique-mine.html?___store=micromineralmarket_en&___from_store=micromineralmarket_fr

- http://www.etude-milliarede.com/index.php?montrevente=407&aff=liste&nbepp=100&tri=numero&page=1 (specimen n° 6)

- http://www.etude-milliarede.com/index.php?montrevente=701 (specimen n° 48)
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Kevin Conroy February 12, 2018 02:25PM
Although pseudomalachite isn't listed, this is probably the mine: https://www.mindat.org/loc-16756.html
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Uwe Kolitsch February 12, 2018 02:51PM
Yes, that's the mine. It's is well known for nice secondary Cu minerals.
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Ralph Bottrill February 12, 2018 10:10PM
There is a Sir Dominic mine in SA but without recorded pseudomalachite, but with the similar looking malachite and cornwallite.

http://www.micromineral-market.com/Shop/pseudomalachite-australie-sir-dominique-mine.html?___store=micromineralmarket_en&___from_store=micromineralmarket_fr looks unlike anything I have seen from this mine. I think its very probably from the Mt Glorious mine in Queensland.

I would also be very dubious about a lot of the labels in the etude-miliaredesite :
"n° 48 MALACHITE ET STOLZITE SIR DOMINIQUE MINE QUEENSLAND AUSTRALIE (4cm)" This seems to be wulfenite on malachite & chrysocolla from the Whim Creek mine, Western Australia
"n° 49 CASSITERITE ET BERYL MONT BISHOFF TASMANIE AUSTRALIE (2cm)" I'm extremely doubtful this is from Mt Bischoff (mis-spelt).
etc.

If you can post a photo of your specimen Vic we may be able to suggest something?
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Keith Compton February 13, 2018 12:32AM
Vik

I have seen lots of different spellings for that mine but Sir Dominick is correct. You will find different spellings in various texts including Dominic, Domonic, Domonik etc and the notes to the locality explain much of the info. The mine was opened around 1862 and basically closed around 1920. There was some further work carried out in the late 1960s.

Cheers
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Vik Vanrusselt February 13, 2018 01:18PM
This is a quick snapshot of the specimen in question, I hope it is good enough? If not, I can take other pictures of the specimen.

Vik



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Ralph Bottrill February 13, 2018 08:24PM
We do need better resolution to tell anything, though it does appear the right sort of matrix and could possibly be Cornubite, cornwallite etc.
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Vik Vanrusselt February 13, 2018 10:04PM
Here are a few (admittedly, crappy) shots taken with a 5MP digital microscope:

The center of the vug in the specimen is composed mainly of dark green needles

The edge of the vug, especially the right side, has dark green and brown crystals

Even further out from the vug are what I would call neon green needles

If necessary, I can send the specimen to anyone willing to investigate further, just let me know :-)

Vik







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Ralph Bottrill February 15, 2018 09:23PM
It looks different to Sir Dominick mine specimens I have seen. The drusy quartz matrix with cuprite and probable malachite, dark hentschelite and blue-green pseudomalachite looks much more like Spring Creek material. But there are other possibilities and it needs testing.
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