Provenite

Aggeneys

AreaActiveDraft data

29.2000° S, 18.8500° E · ± 10 km

Siderite from Northern Cape, South Africa, with photos of specimens from this locality.

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Minerals found here

Siderite

On the same specimen

Same specimen Bornite with Siderite

1 specimen photo(s) from this locality show siderite with bornite together. The pairing comes from the photographer's file name and label, so the relationship between the two minerals is not specified.

Same specimen Sphalerite with Siderite

3 specimen photo(s) from this locality show siderite with sphalerite together. The pairing comes from the photographer's file name and label, so the relationship between the two minerals is not specified.

Siderite at Aggeneys

Plate of gemmy, doubly terminated siderite crystals with chalcopyrite on matrix from Aggeneys.
Plate of gemmy, doubly terminated siderite crystals with chalcopyrite on matrix from Aggeneys.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Brown siderite blades and small balls with tiny bornite rosettes from Aggeneys.
Brown siderite blades and small balls with tiny bornite rosettes from Aggeneys.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Hollow barrel-shaped casts of siderite and sphalerite after calcite from Aggeneys.
Hollow barrel-shaped casts of siderite and sphalerite after calcite from Aggeneys.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Cabinet specimen of siderite-sphalerite epimorphs replacing calcite crystals, Aggeneys.
Cabinet specimen of siderite-sphalerite epimorphs replacing calcite crystals, Aggeneys.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Large group of siderite and sphalerite pseudomorphs after calcite from Aggeneys.
Large group of siderite and sphalerite pseudomorphs after calcite from Aggeneys.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Formula
FeCO₃
Morphology
Doubly terminated crystals, blades and small balls; also barrel-shaped hollow casts of siderite and sphalerite after calcite
Typical size
Blades to about 0.8 cm; casts form cabinet-size groups
Color / luster
Rich brown, lustrous; some crystals gemmy
Associated minerals
Sphaleritechalcopyritebornite
Availability
Scarce
History
A small find of siderite-sphalerite epimorphs after calcite was offered at the Munich show in 2006.

Sources: SRC-589 SRC-602

About Siderite →

Geology of the locality

Setting
Base-metal (zinc, lead, copper, silver) mining area; the Black Mountain Mine lies just west of the town.
Region
Northern Cape
Country
South Africa

Mining town founded in 1976. Specimen labels name only Aggeneys, so the occurrence is placed at area level; coordinates are those of the town (Wikipedia).

Sources: SRC-589

Sources

  1. SRC-589 · Website
    AggeneysWikipedia contributors · Wikipedia
  2. SRC-602 · Website
    File:Siderite-Sphalerite-272629.jpgRobert M. Lavinsky · Wikimedia Commons

Draft data from the Provenite workbook. Check entries against the cited sources before relying on them. Photos are open-licence images from Wikimedia Commons; the author and licence are given with each photo.