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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Dec 07, 2017 01:22 Post subject: Minerals of DR Congo, Katanga. |
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About the copper-bearing crescent, referred to as the South Katanga geological scandal.
Mining centers: Shinkolobwe (U), Lubumbashi (Cu), Likasi (Cu), Kambove (Cu, Co.), Kipushi (Zn, Cu, Ge).
Mineral: | Becquerelite with Schoepite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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35588 Time(s) |
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Mineral: | Becquerelite with Schoepite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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35598 Time(s) |
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Mineral: | Schoepite on Becquerelite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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35710 Time(s) |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Dec 08, 2017 10:45 Post subject: Re: Minerals of DR Congo, Katanga. |
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Selenian barite
Mineral: | Barite (variety selenian baryte) |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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35523 Time(s) |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Dec 08, 2017 11:01 Post subject: Re: Minerals of DR Congo, Katanga. |
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Dewindtite - hydrated phosphate of uranyl and lead.
yellow canary tablets.
No fluorescence.
Mineral: | Dewindtite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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35511 Time(s) |
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Mineral: | Dewindtite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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35440 Time(s) |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Dec 09, 2017 15:38 Post subject: Re: Minerals of DR Congo, Katanga. |
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Pseudomalachite: Cu5(PO4)2(OH)4 on chrysocolla, Mashamba, Katanga.
Monoclinic crystals of pseudomalachite are very rare in Congo.
The macrophoto shows well the hillocky appearance, dark green to dark gray.
Under the microscope, the fine texture appears.
Aggregates of acicular crystals, reflective laterally.
Gray tint. Some parts, whose green colored ends, would correspond to late elongation or secondary growth of pseudomalachite microcrystals.
Mineral: | Pseudomalachite |
Locality: | Mashamba West Mine, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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35311 Time(s) |
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Mineral: | Pseudomalachite |
Locality: | Mashamba West Mine, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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35292 Time(s) |
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Mineral: | Pseudomalachite |
Locality: | Mashamba West Mine, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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35317 Time(s) |
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Mineral: | Pseudomalachite |
Locality: | Mashamba West Mine, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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35292 Time(s) |
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Mineral: | Pseudomalachite |
Locality: | Mashamba West Mine, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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35402 Time(s) |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Dec 11, 2017 09:40 Post subject: Re: Minerals of DR Congo, Katanga. |
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Liege Intermineral Expo 4-5 November 2017.
A nice exhibition was in Liège (Belgium), Palais des Congrès, along the river "Meuse". 4 institutions or collectors participated:
National Museum of Natural History of Luxembourg, Dr. Simon Philippo.
Laboratory of Mineralogy - University of Liege, Prof. Frédéric Hatert.
Francis Coune and Valère Berlage.
Rare and nice specimens were presented.
Since the theme was Congo, I will place the photos of the specimens in the post "Minerals of D.R. Congo.”
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PALAIS DES CONGRES LIEGE, Belgium and the river "Meuse". |
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ex-Belgian Congo Geography as it was taught in the 40s-50s. |
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35163 Time(s) |
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35186 Time(s) |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Dec 13, 2017 13:53 Post subject: Re: Minerals of DR Congo, Katanga. |
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National Museum of Natural History of Luxembourg
Mineral: | Copper |
Locality: | Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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35027 Time(s) |
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Mineral: | Cuprite |
Locality: | Mashamba West Mine, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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35044 Time(s) |
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Mineral: | Carrollite |
Locality: | Kamoya South II Mine, Kamoya, Kambove District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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35032 Time(s) |
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Mineral: | Chalcocite |
Locality: | Kipushi, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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35014 Time(s) |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Dec 13, 2017 15:58 Post subject: Re: Minerals of DR Congo, Katanga. |
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National Museum of Natural History of Luxembourg
Mineral: | Copper on Calcite (variety cobaltoan calcite) |
Locality: | Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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Description: |
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35017 Time(s) |
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Mineral: | Calcite (variety cobaltoan calcite) |
Locality: | Mashamba West Mine, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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34977 Time(s) |
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Mineral: | Quartz (variety amethyst) with Calcite (variety cobaltoan calcite) |
Locality: | Kambove District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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34988 Time(s) |
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Mineral: | Libethenite |
Locality: | M'sesa Mine, Kambove District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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35069 Time(s) |
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Mineral: | Malachite and Chrysocolle |
Locality: | |
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34981 Time(s) |
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Mineral: | Smithsonite |
Locality: | |
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35027 Time(s) |
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Mineral: | Shattuckite |
Locality: | |
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35042 Time(s) |
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Mineral: | Plancheite |
Locality: | |
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34974 Time(s) |
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Mineral: | Calcite |
Locality: | Kipushi, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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34993 Time(s) |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Dec 14, 2017 22:46 Post subject: Re: Minerals of DR Congo, Katanga. |
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Professor of Geology Paul FOURMARIER (1877-1970)-
University of Liège, inventor of microtectonics.
(bronze plate).
Fourmarierite and some minerals
Mineral: | Fourmarierite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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34888 Time(s) |
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Mineral: | Fourmarierite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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Description: |
with uranophane on uraninite |
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34934 Time(s) |
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Mineral: | Fourmarierite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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Description: |
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34815 Time(s) |
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Mineral: | Fourmarierite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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34830 Time(s) |
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Mineral: | Fourmarierite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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Description: |
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34789 Time(s) |
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Mineral: | Fourmarierite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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Description: |
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34786 Time(s) |
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Mineral: | Fourmarierite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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34829 Time(s) |
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Mineral: | Uranophane |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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34929 Time(s) |
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34794 Time(s) |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Dec 16, 2017 09:45 Post subject: Re: Minerals of DR Congo, Katanga. |
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MNHN Luxembourg
Mineral: | Baryte |
Locality: | |
Description: |
with Malachite and chrysocolle |
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34697 Time(s) |
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Mineral: | Bornite |
Locality: | |
Description: |
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34710 Time(s) |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Dec 16, 2017 11:45 Post subject: Re: Minerals of DR Congo, Katanga. |
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Kamotoite, Kamoto East Open cut, Kolwezi, Katanga.
Relatively recent mineral, described in 1986 (Deliens and Piret).
Kamotoite-(Y) = Y2(UO2)4(CO3)3O4.14H2O
Hydrated Carbonate of Uranyl and Rare Earth.
Transparent slats of lemon yellow color. Tip termination, 35 ° angle.
Dehydrated, the kamotoite becomes opaque.
Mineral: | Kamatoïte |
Locality: | |
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34665 Time(s) |
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Mineral: | Kamatoïte |
Locality: | |
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with astrocyanite-(Ce) and uranophane |
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34702 Time(s) |
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Mineral: | Kamotoïte |
Locality: | |
Description: |
with astrocyanite-(Ce) and uranophane |
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34699 Time(s) |
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Mineral: | Kamatoïte |
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34618 Time(s) |
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Mineral: | Kamatoïte |
Locality: | |
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34660 Time(s) |
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Mineral: | Kamotoïte |
Locality: | |
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34600 Time(s) |
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Mineral: | Kamotoïte |
Locality: | |
Description: |
with a "labelliforme" habit, i.e. fan-shaped |
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34649 Time(s) |
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Mineral: | Kamotoïte |
Locality: | |
Description: |
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34635 Time(s) |
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Mineral: | Kamotoïte |
Locality: | |
Description: |
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34612 Time(s) |
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Mineral: | Kamotoïte |
Locality: | |
Description: |
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34652 Time(s) |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Dec 16, 2017 15:06 Post subject: Re: Minerals of DR Congo, Katanga. |
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It may be useful to locate mines on a map of Kolwezi area, Katanga.
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34590 Time(s) |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Feb 12, 2018 05:51 Post subject: Re: Minerals of DR Congo, Katanga. |
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Hello,
It's time to show you some rarities from Katanga (Shinkolobwe).
The first specimen is 1 cm wide.
We find on a background of poorly crystallized torbernite, tan needles of dumontite, red curite and geld curienite. FOV = 3 mm.
This is the only sample on which the curienite was analyzed in Katanga. This mineral is normally found in Mounana, Franceville (Gabon).
Mineral: | Dumontite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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Description: |
with curienite, curite, torbernite |
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32824 Time(s) |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Feb 16, 2018 00:07 Post subject: Re: Minerals of DR Congo, Katanga. |
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Another aspect of curienite. Crystals are never seen in Mounana mine.
Mineral: | Curienite, Dumontite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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32444 Time(s) |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Feb 16, 2018 00:37 Post subject: Re: Minerals of DR Congo, Katanga. |
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Hi,
Here the expansion of the torbernites area. The elongation of the torbernite crystals is rather unusual. This habitus is found at Shinkolobwe.
The saleeiteite can carry in Shinkolobwe an epitaxy of torbernite, but on this sample, these crystals are too small to be discerned. The sample size was too big for a larger magnification.
Note the unusual elongated prismatic crystallization of the torbernite crystals.
Mineral: | Torbernite, Saleeite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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32397 Time(s) |
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Mineral: | Torbernite, Saleeite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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32373 Time(s) |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Feb 16, 2018 01:34 Post subject: Re: Minerals of DR Congo, Katanga. |
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Hi,
About epitaxy.
Another sample of saleeite / torbernite was photographed in 2015. I add some photos showing the epitaxy of the torbernite on the saleeite.
From Dal Bo Fabrice’s thesis (Mineralogy and crystal chemistry of natural and synthetic uranyl oxysalts) and Coll. S. Puccio.
Mineral: | Saleeite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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Description: |
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32338 Time(s) |
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Mineral: | Torbernite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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Description: |
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32370 Time(s) |
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Mineral: | Torbernite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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Description: |
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32328 Time(s) |
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Mineral: | Torbernite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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32352 Time(s) |
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Mineral: | Torbernite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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32299 Time(s) |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Feb 16, 2018 01:48 Post subject: Re: Minerals of DR Congo, Katanga. |
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Saleeite
Mineral: | Saleeite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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Description: |
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32277 Time(s) |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Feb 16, 2018 04:12 Post subject: Re: Minerals of DR Congo, Katanga. |
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Hi,
Two minerals in one Crystal !
Wyartite is black-purple in color. But it deteriorates superficially by decarboxylation into yellow epi-ianthinite (variety of schoepite).
Wyartite is the hydroxy carbonate of uranyl, copper and uranium.
Mineral: | Wyartite |
Locality: | |
Description: |
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32275 Time(s) |
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Mineral: | Wyartite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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32278 Time(s) |
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Mineral: | Wyartite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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32320 Time(s) |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Feb 20, 2018 09:07 Post subject: Re: Minerals of DR Congo, Katanga. |
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Hi,
Gold on uraninite is well known in Shinkolobwe.
Mineral: | Gold on Uraninite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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31906 Time(s) |
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Mineral: | Gold on Uraninite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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31912 Time(s) |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Feb 20, 2018 09:35 Post subject: Re: Minerals of DR Congo, Katanga. |
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Hi
Here are extremely rare minerals.
The first is kolbeckite, scandium phosphate.
Scandium and yttrium are considered rare-earth elements because they tend to occur often in the same ore deposits as the lanthanides and exhibit similar chemical properties
Mineral: | Kolbeckite |
Locality: | |
Description: |
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31923 Time(s) |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Feb 20, 2018 16:40 Post subject: Re: Minerals of DR Congo, Katanga. |
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Hi,
Sharpite is a rare hydroxycarbonate of uranyl and copper with radially fibrous crust.
Black dots are heteogenite.
Mineral: | Sharpite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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Description: |
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31810 Time(s) |
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