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Roger Warin
Joined: 23 Jan 2013
Posts: 1177
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Posted: Mar 06, 2013 10:59 Post subject: Mashamba minerals |
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It really is as.
Roger.
Description: |
Cobaltoan calcite Mashamba West Mine, Kolwezi District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre) |
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valere
Joined: 10 Feb 2011
Posts: 55
Location: Belgium
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Posted: Mar 06, 2013 11:12 Post subject: Re: Mashamba minerals |
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Pure Eye Candy!
The color of this one is incredible
Thanks Roger!
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4112
Location: Germany
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Posted: Mar 06, 2013 12:13 Post subject: Re: Mashamba minerals |
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Really a nice one, Roger!
Description: |
Cuprite Mashamba West Mine, Kolwezi District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre) Specimen size 2 cm, crystal 7 mm |
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Maxilos
Joined: 02 Nov 2010
Posts: 191
Location: Boskoop, The Netherlands
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Posted: Mar 07, 2013 08:17 Post subject: Re: Mashamba minerals |
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Hello,
What a lovely deep red cuprite crystal. Great!
Mark
_________________ "Still looking for the philosopher's stone" => Dutch proverb |
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Nico78
Joined: 31 Oct 2012
Posts: 34
Location: Paris
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Posted: Mar 30, 2013 00:54 Post subject: Re: Mashamba minerals |
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One of my first contibutions of this forum with some pieces!
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Carrollite Kamoya South Mine, Kamoya, Kambove, Katanga, D.R. Congo |
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_________________ Young french geologist engineer somewhere around the world .
Also forgive me for my english syntax! I'm not yet fluent! |
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Nico78
Joined: 31 Oct 2012
Posts: 34
Location: Paris
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Posted: Mar 30, 2013 00:57 Post subject: Re: Mashamba minerals |
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followed by...
Description: |
Cuprite Mashamba West Mine, Kolwezi, Katanga, D.R. Congo 4 x 5 cm |
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_________________ Young french geologist engineer somewhere around the world .
Also forgive me for my english syntax! I'm not yet fluent! |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4902
Location: Barcelona
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Posted: Mar 30, 2013 16:45 Post subject: Re: Mashamba minerals |
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Nico78 wrote: | Carrollite
Kamoya South Mine, Kamoya, Kambove, Katanga, D.R. Congo |
Nico78 wrote: | Cuprite
Mashamba West Mine, Kolwezi, Katanga, D.R. Congo |
The sizes please?
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Roger Warin
Joined: 23 Jan 2013
Posts: 1177
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Posted: Mar 31, 2013 00:46 Post subject: Re: Mashamba minerals |
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Hello,
I think these carrollites are from Kasundwa mine, South Kamoya, Kambove (DRC).
Roger.
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Nico78
Joined: 31 Oct 2012
Posts: 34
Location: Paris
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Posted: Apr 01, 2013 04:24 Post subject: Re: Mashamba minerals |
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Sorry!
Beginer's mistakes to forget the size :x
For the first one, I lets you guess with the size of my hitch.
For the second 4*5 cm.
And thanks Roger for this precision.
But in the other hand this pieces came from an old collecion of a french geologist that worked in Congo in the 70"s. SO I can really tell you it's it is a mistakes of location in the etiket or not...
_________________ Young french geologist engineer somewhere around the world .
Also forgive me for my english syntax! I'm not yet fluent! |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1177
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Posted: Apr 01, 2013 08:46 Post subject: Re: Mashamba minerals |
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Hello,
Is this French geologist GG?
The carrollite was not an abundant mineral in DRC. Buttgenbach analyzed it from a small sample from Luishia (Katanga) (1925).
In the late 80s beautiful crystallized samples (but <1 cm) of carrollite with bornite xls were found in Kamoto-Pit. Morphology is more complex (and also beautiful) than in Kasundwa mine (Kamoya).
At Kambove, crystals of carrollite can reach 2 cm.
Latest discoveries of carrollite from Kasundwa mine have less rich forms (octahedron, cuboctahedron, cube), but they may exceed 5 cm edge and they’re spectacular.
Carrollite with linnaeite is rather a component of the primary ores of cobalt. Well crystallized it seems rare.
I think no carrollite specimen was found in Mashamba.
Roger.
PS: if you want see a map of copper crescent mines in Katanga, you can see this link:
https://www.agab.be/mineralogie/Katanga/cartes.html
(link normalized by FMF)
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4902
Location: Barcelona
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Posted: Apr 01, 2013 09:32 Post subject: Re: Mashamba minerals |
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Nico78 wrote: | For the second 4*5 cm. |
Thank you, but 4.5 cm x ? x ?
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Tracy
Joined: 15 Sep 2006
Posts: 551
Location: Toronto
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Posted: Apr 01, 2013 11:25 Post subject: Re: Mashamba minerals |
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Hi Nico78 -
As Jordi says, but also, when you say "the size of my hitch" do you mean your thumb? It is barely visible in the photo and can be a variety of sizes. A rough estimate is possible based on the box on which the carrolite is mounted (relative to your fingers), but actual numbers would be much better.
Thanks
- Tracy
_________________ "Wisdom begins in wonder" - Socrates |
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supertxango
Joined: 15 Jul 2012
Posts: 135
Location: Madrid
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Posted: Apr 02, 2013 15:00 Post subject: Re: Mashamba minerals |
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Hi Nico78,
Please, as Tracy and Jordi say we need the dimensions in the following way:
A x B x C cm or A x B x C mm.
Thank you very much.
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: Apr 02, 2013 18:50 Post subject: Re: Mashamba minerals |
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Roger Warin wrote: | PS: if you want see a map of copper crescent mines in Katanga, you can see this link:...
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Roger, Nice interactive map. Thanks for posting it.
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Nico78
Joined: 31 Oct 2012
Posts: 34
Location: Paris
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Posted: Apr 02, 2013 22:54 Post subject: Re: Mashamba minerals |
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Yes in fact, the specimens came from Gilbert Gauthier collection.
And really sorry for my lack of accurancy.
However I can't give you more precisions for the moment!
I am working in New Zealand and my collection still in Paris.
I have just some pictures here to give me some good memories and to participate a little to this forum.
Thanks, and again sorry,
(and yes 4*5cm means 4cm x 5cm)
_________________ Young french geologist engineer somewhere around the world .
Also forgive me for my english syntax! I'm not yet fluent! |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1177
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Posted: Apr 03, 2013 04:53 Post subject: Re: Mashamba minerals |
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Hello,
Gilbert Gauthier was in fact a Belgian geologist. He was born in Ciney (Condroz).
In the years 70-80, mineral localities were often poorly defined in Katanga. Indeed, these katangan specimens reached in Belgium from a young country (Zaire) without labels. Indications of new discoveries were vague, many origins beeing invented. Many mines evolved much and were taking great importance.
With the return to the country of great amateurs (e.g. Dr J. Lhoest (UMHK) and J.M. Pendeville who lived longer in Congo after independence), the errors were corrected. As elsewhere, the appearance of the matrix is very important.
Roger.
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Nico78
Joined: 31 Oct 2012
Posts: 34
Location: Paris
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Posted: Apr 05, 2013 17:24 Post subject: Re: Mashamba minerals |
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Thanks for these precisions!
I copy that :)
_________________ Young french geologist engineer somewhere around the world .
Also forgive me for my english syntax! I'm not yet fluent! |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1177
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Posted: Apr 21, 2013 15:31 Post subject: Re: Mashamba minerals |
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Hi,
Mashamba West mine produces beautiful flowers. Here is a cuprite.
Roger.
Description: |
Cuprite Mashamba West Mine, Kolwezi District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre) |
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