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Identity HelpLocality help: "Sir Dominique Mine, South Australia"

12th Feb 2018 14:20 UTCVik Vanrusselt Expert

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)

12th Feb 2018 14:25 UTCKevin Conroy Manager

Although pseudomalachite isn't listed, this is probably the mine: https://www.mindat.org/loc-16756.html

12th Feb 2018 14:51 UTCUwe Kolitsch Manager

Yes, that's the mine. It's is well known for nice secondary Cu minerals.

12th Feb 2018 22:10 UTCRalph S Bottrill 🌟 Manager

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?

13th Feb 2018 00:32 UTCKeith Compton 🌟 Manager

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

13th Feb 2018 13:18 UTCVik Vanrusselt Expert

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

13th Feb 2018 20:24 UTCRalph S Bottrill 🌟 Manager

We do need better resolution to tell anything, though it does appear the right sort of matrix and could possibly be Cornubite, cornwallite etc.

13th Feb 2018 22:04 UTCVik Vanrusselt Expert

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

15th Feb 2018 21:23 UTCRalph S Bottrill 🌟 Manager

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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