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: |
18344 Time(s) |

|
Mineral: | Becquerelite with Schoepite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
18366 Time(s) |

|
Mineral: | Schoepite on Becquerelite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
18388 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: |
18270 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: |
18273 Time(s) |

|
Mineral: | Dewindtite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
18222 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: |
18078 Time(s) |

|
Mineral: | Pseudomalachite |
Locality: | Mashamba West Mine, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
18053 Time(s) |

|
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: |
18060 Time(s) |

|
Mineral: | Pseudomalachite |
Locality: | Mashamba West Mine, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
18108 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: |
17905 Time(s) |

|
Description: |
|
Viewed: |
17922 Time(s) |

|
Description: |
ex-Belgian Congo Geography as it was taught in the 40s-50s. |
|
Viewed: |
17930 Time(s) |

|
Description: |
|
Viewed: |
17958 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: |
17785 Time(s) |

|
Mineral: | Cuprite |
Locality: | Mashamba West Mine, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17818 Time(s) |

|
Mineral: | Carrollite |
Locality: | Kamoya South II Mine, Kamoya, Kambove District, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17783 Time(s) |

|
Mineral: | Chalcocite |
Locality: | Kipushi, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17778 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: |
17784 Time(s) |

|
Mineral: | Calcite (variety cobaltoan calcite) |
Locality: | Mashamba West Mine, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17756 Time(s) |

|
Mineral: | Quartz (variety amethyst) with Calcite (variety cobaltoan calcite) |
Locality: | Kambove District, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17754 Time(s) |

|
Mineral: | Libethenite |
Locality: | M'sesa Mine, Kambove District, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17810 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: |
17751 Time(s) |

|
Mineral: | Smithsonite |
Locality: | Kipushi Mine, Kipushi, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17778 Time(s) |

|
Mineral: | Shattuckite |
Locality: | Tantara Mine, Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17772 Time(s) |

|
Mineral: | Plancheite |
Locality: | Shangulowé Mine, Kambove District, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17749 Time(s) |

|
Mineral: | Calcite |
Locality: | Kipushi, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17747 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: |
17642 Time(s) |

|
Mineral: | Fourmarierite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
with uranophane on uraninite |
|
Viewed: |
17629 Time(s) |

|
Mineral: | Fourmarierite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17613 Time(s) |

|
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: |
|
Viewed: |
17591 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: |
17620 Time(s) |

|
Mineral: | Uranophane |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17642 Time(s) |

|
Description: |
|
Viewed: |
17629 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: |
17513 Time(s) |

|
Mineral: | Bornite |
Locality: | Kamoya, Kambove District, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17526 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: |
17489 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: |
17471 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: |
17502 Time(s) |

|
Mineral: | Kamatoïte |
Locality: | Kamoto East Open cut, Kamoto, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17429 Time(s) |

|
Mineral: | Kamatoïte |
Locality: | Kamoto East Open cut, Kamoto, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17469 Time(s) |

|
Mineral: | Kamotoïte |
Locality: | Kamoto East Open cut, Kamoto, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17442 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: |
17469 Time(s) |

|
Mineral: | Kamotoïte |
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: |
17452 Time(s) |

|
Mineral: | Kamotoïte |
Locality: | Kamoto East Open cut, Kamoto, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
17481 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: |
17422 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: |
15646 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: |
15267 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: |
15257 Time(s) |

|
Mineral: | Torbernite, Saleeite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
15226 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: |
15201 Time(s) |

|
Mineral: | Torbernite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
15214 Time(s) |

|
Mineral: | Torbernite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
15185 Time(s) |

|
Mineral: | Torbernite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
15219 Time(s) |

|
Mineral: | Torbernite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
15193 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: |
15173 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: |
15184 Time(s) |

|
Mineral: | Wyartite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
15149 Time(s) |

|
Mineral: | Wyartite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
15185 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: |
14776 Time(s) |

|
Mineral: | Gold on Uraninite |
Locality: | Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire) |  |
|
Description: |
|
Viewed: |
14792 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: |
14765 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: |
14693 Time(s) |

|
|
|
Back to top |
|
 |
|