View previous topic :: View next topic |
Author |
Message |
Roger Warin

Joined: 23 Jan 2013
Posts: 936



|
Posted: Dec 07, 2017 01:22 Post subject: Minerals of DR Congo, Katanga. |
|
|
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), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
18341 Time(s) |

|
Mineral: | Becquerelite with Schoepite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
18363 Time(s) |

|
Mineral: | Schoepite on Becquerelite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
18385 Time(s) |

|
|
|
Back to top |
|
 |
Roger Warin

Joined: 23 Jan 2013
Posts: 936



|
Posted: Dec 08, 2017 10:45 Post subject: Re: Minerals of DR Congo, Katanga. |
|
|
Selenian barite
Mineral: | Barite (variety selenian baryte) |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
18267 Time(s) |

|
|
|
Back to top |
|
 |
Roger Warin

Joined: 23 Jan 2013
Posts: 936



|
Posted: Dec 08, 2017 11:01 Post subject: Re: Minerals of DR Congo, Katanga. |
|
|
Dewindtite - hydrated phosphate of uranyl and lead.
yellow canary tablets.
No fluorescence.
Mineral: | Dewindtite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
18270 Time(s) |

|
Mineral: | Dewindtite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
18219 Time(s) |

|
|
|
Back to top |
|
 |
Roger Warin

Joined: 23 Jan 2013
Posts: 936



|
Posted: Dec 09, 2017 15:38 Post subject: Re: Minerals of DR Congo, Katanga. |
|
|
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), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
18075 Time(s) |

|
Mineral: | Pseudomalachite |
Locality: | Mashamba West Mine, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
18050 Time(s) |

|
Mineral: | Pseudomalachite |
Locality: | Mashamba West Mine, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
18072 Time(s) |

|
Mineral: | Pseudomalachite |
Locality: | Mashamba West Mine, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
18057 Time(s) |

|
Mineral: | Pseudomalachite |
Locality: | Mashamba West Mine, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
18105 Time(s) |

|
|
|
Back to top |
|
 |
Roger Warin

Joined: 23 Jan 2013
Posts: 936



|
Posted: Dec 11, 2017 09:40 Post subject: Re: Minerals of DR Congo, Katanga. |
|
|
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.”
Description: |
PALAIS DES CONGRES LIEGE, Belgium and the river "Meuse". |
|
Viewed: |
17902 Time(s) |

|
Description: |
|
Viewed: |
17919 Time(s) |

|
Description: |
ex-Belgian Congo Geography as it was taught in the 40s-50s. |
|
Viewed: |
17927 Time(s) |

|
Description: |
|
Viewed: |
17955 Time(s) |

|
|
|
Back to top |
|
 |
Roger Warin

Joined: 23 Jan 2013
Posts: 936



|
Posted: Dec 13, 2017 13:53 Post subject: Re: Minerals of DR Congo, Katanga. |
|
|
National Museum of Natural History of Luxembourg
Mineral: | Copper |
Locality: | Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17782 Time(s) |

|
Mineral: | Cuprite |
Locality: | Mashamba West Mine, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17815 Time(s) |

|
Mineral: | Carrollite |
Locality: | Kamoya South II Mine, Kamoya, Kambove District, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17780 Time(s) |

|
Mineral: | Chalcocite |
Locality: | Kipushi, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17775 Time(s) |

|
|
|
Back to top |
|
 |
Roger Warin

Joined: 23 Jan 2013
Posts: 936



|
Posted: Dec 13, 2017 15:58 Post subject: Re: Minerals of DR Congo, Katanga. |
|
|
National Museum of Natural History of Luxembourg
Mineral: | Copper on Calcite (variety cobaltoan calcite) |
Locality: | Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17781 Time(s) |

|
Mineral: | Calcite (variety cobaltoan calcite) |
Locality: | Mashamba West Mine, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17753 Time(s) |

|
Mineral: | Quartz (variety amethyst) with Calcite (variety cobaltoan calcite) |
Locality: | Kambove District, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17751 Time(s) |

|
Mineral: | Libethenite |
Locality: | M'sesa Mine, Kambove District, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17807 Time(s) |

|
Mineral: | Malachite and Chrysocolle |
Locality: | L'Etoile du Congo Mine (Star of the Congo Mine), Lubumbashi (Elizabethville), Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17748 Time(s) |

|
Mineral: | Smithsonite |
Locality: | Kipushi Mine, Kipushi, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17775 Time(s) |

|
Mineral: | Shattuckite |
Locality: | Tantara Mine, Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17769 Time(s) |

|
Mineral: | Plancheite |
Locality: | Shangulowé Mine, Kambove District, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17746 Time(s) |

|
Mineral: | Calcite |
Locality: | Kipushi, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17744 Time(s) |

|
|
|
Back to top |
|
 |
Roger Warin

Joined: 23 Jan 2013
Posts: 936



|
Posted: Dec 14, 2017 22:46 Post subject: Re: Minerals of DR Congo, Katanga. |
|
|
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), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17639 Time(s) |

|
Mineral: | Fourmarierite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
with uranophane on uraninite |
|
Viewed: |
17626 Time(s) |

|
Mineral: | Fourmarierite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17610 Time(s) |

|
Mineral: | Fourmarierite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17636 Time(s) |

|
Mineral: | Fourmarierite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17588 Time(s) |

|
Mineral: | Fourmarierite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17585 Time(s) |

|
Mineral: | Fourmarierite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17617 Time(s) |

|
Mineral: | Uranophane |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17639 Time(s) |

|
Description: |
|
Viewed: |
17626 Time(s) |

|
|
|
Back to top |
|
 |
Roger Warin

Joined: 23 Jan 2013
Posts: 936



|
Posted: Dec 16, 2017 09:45 Post subject: Re: Minerals of DR Congo, Katanga. |
|
|
MNHN Luxembourg
Mineral: | Baryte |
Locality: | Shangulowé Mine, Kambove District, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
with Malachite and chrysocolle |
|
Viewed: |
17510 Time(s) |

|
Mineral: | Bornite |
Locality: | Kamoya, Kambove District, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17523 Time(s) |

|
|
|
Back to top |
|
 |
Roger Warin

Joined: 23 Jan 2013
Posts: 936



|
Posted: Dec 16, 2017 11:45 Post subject: Re: Minerals of DR Congo, Katanga. |
|
|
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: | Kamoto, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17486 Time(s) |

|
Mineral: | Kamatoïte |
Locality: | Kamoto East Open cut, Kamoto, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
with astrocyanite-(Ce) and uranophane |
|
Viewed: |
17468 Time(s) |

|
Mineral: | Kamotoïte |
Locality: | Kamoto East Open cut, Kamoto, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
with astrocyanite-(Ce) and uranophane |
|
Viewed: |
17499 Time(s) |

|
Mineral: | Kamatoïte |
Locality: | Kamoto East Open cut, Kamoto, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17426 Time(s) |

|
Mineral: | Kamatoïte |
Locality: | Kamoto East Open cut, Kamoto, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17466 Time(s) |

|
Mineral: | Kamotoïte |
Locality: | Kamoto East Open cut, Kamoto, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17439 Time(s) |

|
Mineral: | Kamotoïte |
Locality: | Kamoto East Open cut, Kamoto, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
with a "labelliforme" habit, i.e. fan-shaped |
|
Viewed: |
17466 Time(s) |

|
Mineral: | Kamotoïte |
Locality: | Kamoto East Open cut, Kamoto, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17463 Time(s) |

|
Mineral: | Kamotoïte |
Locality: | Kamoto East Open cut, Kamoto, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17449 Time(s) |

|
Mineral: | Kamotoïte |
Locality: | Kamoto East Open cut, Kamoto, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17478 Time(s) |

|
|
|
Back to top |
|
 |
Roger Warin

Joined: 23 Jan 2013
Posts: 936



|
Posted: Dec 16, 2017 15:06 Post subject: Re: Minerals of DR Congo, Katanga. |
|
|
It may be useful to locate mines on a map of Kolwezi area, Katanga.
Description: |
|
Viewed: |
17419 Time(s) |

|
|
|
Back to top |
|
 |
Roger Warin

Joined: 23 Jan 2013
Posts: 936



|
Posted: Feb 12, 2018 05:51 Post subject: Re: Minerals of DR Congo, Katanga. |
|
|
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), Congo DR (Zaire) |  |
|
Description: |
with curienite, curite, torbernite |
|
Viewed: |
15643 Time(s) |

|
|
|
Back to top |
|
 |
Roger Warin

Joined: 23 Jan 2013
Posts: 936



|
Posted: Feb 16, 2018 00:07 Post subject: Re: Minerals of DR Congo, Katanga. |
|
|
Another aspect of curienite. Crystals are never seen in Mounana mine.
Mineral: | Curienite, Dumontite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
15264 Time(s) |

|
|
|
Back to top |
|
 |
Roger Warin

Joined: 23 Jan 2013
Posts: 936



|
Posted: Feb 16, 2018 00:37 Post subject: Re: Minerals of DR Congo, Katanga. |
|
|
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), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
15254 Time(s) |

|
Mineral: | Torbernite, Saleeite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
15223 Time(s) |

|
|
|
Back to top |
|
 |
Roger Warin

Joined: 23 Jan 2013
Posts: 936



|
Posted: Feb 16, 2018 01:34 Post subject: Re: Minerals of DR Congo, Katanga. |
|
|
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), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
15198 Time(s) |

|
Mineral: | Torbernite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
15211 Time(s) |

|
Mineral: | Torbernite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
15182 Time(s) |

|
Mineral: | Torbernite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
15216 Time(s) |

|
Mineral: | Torbernite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
15190 Time(s) |

|
|
|
Back to top |
|
 |
Roger Warin

Joined: 23 Jan 2013
Posts: 936



|
Posted: Feb 16, 2018 01:48 Post subject: Re: Minerals of DR Congo, Katanga. |
|
|
Saleeite
Mineral: | Saleeite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
15170 Time(s) |

|
|
|
Back to top |
|
 |
Roger Warin

Joined: 23 Jan 2013
Posts: 936



|
Posted: Feb 16, 2018 04:12 Post subject: Re: Minerals of DR Congo, Katanga. |
|
|
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: | Tantara Mine, Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
15181 Time(s) |

|
Mineral: | Wyartite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
15146 Time(s) |

|
Mineral: | Wyartite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
15182 Time(s) |

|
|
|
Back to top |
|
 |
Roger Warin

Joined: 23 Jan 2013
Posts: 936



|
Posted: Feb 20, 2018 09:07 Post subject: Re: Minerals of DR Congo, Katanga. |
|
|
Hi,
Gold on uraninite is well known in Shinkolobwe.
Mineral: | Gold on Uraninite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
14773 Time(s) |

|
Mineral: | Gold on Uraninite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
14789 Time(s) |

|
|
|
Back to top |
|
 |
Roger Warin

Joined: 23 Jan 2013
Posts: 936



|
Posted: Feb 20, 2018 09:35 Post subject: Re: Minerals of DR Congo, Katanga. |
|
|
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: | Kamoto, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
14762 Time(s) |

|
|
|
Back to top |
|
 |
Roger Warin

Joined: 23 Jan 2013
Posts: 936



|
Posted: Feb 20, 2018 16:40 Post subject: Re: Minerals of DR Congo, Katanga. |
|
|
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), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
14690 Time(s) |

|
|
|
Back to top |
|
 |
|