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RM1094   Bixbyite

N'Chwaning III Mine, Kalahari manganese fields, Kuruman, Northern Cape, South Africa

Most people do not know that these come from anywhere but Utah, but here is a Kalahari Manganese fields bixbyite specimen. A druse of highly lustrous, very sharp interpenetrated cubes of black bixbyite from this famous locality. An excellent specimen for the locality. A true rarity.


Size: 3.8 x 3.5 x 2.0 cm.
Main crystal: 8 x 7 mm.
Found in 2012.

 

RM1092   Bultfonteinite with olmiite and celestine

N'Chwaning II Mine, Kalahari manganese fields, Kuruman, Northern Cape, South Africa

Very good specimen of bultfonteinite forming white acicular crystals, with prisms slightly beige to orange of olmiite. Two rare species from a mining area well known for systematic collectors. Accompanied by tabular celestine crystals. Good size and better quality.


Size: 6.0 x 4.3 x 3.9 cm.
Found in 2004.

 

RM1197   Bultfonteinite with olmiite and celestite

N'Chwaning II Mine, Kalahari manganese fields, Kuruman, Northern Cape, South Africa

Very good specimen of bultfonteinite forming white acicular crystals, with prisms slightly beige to orange of olmiite. Two rare species from a mining area well known for systematic collectors. Accompanied by tabular celestine crystals. Good size and better quality.


Size: 7.7 x 5.5 x 4.0 cm.

 

RM1104   Sturmanite

N'Chwaning III Mine, Kalahari Manganese Fields, Kuruman, Northern Cape, South Africa

In this specimen we can see a group of lenticular sturmanite crystals, brilliant, with well defined faces and edges. Color is yellow to greenish. Noted for its size and transparency. A very good choice...


Size: 4.5 x 3.0 x 1.4 cm.
Main crystal: 12 x 10 mm.
Found in 2014.

 

RM1105   Sturmanite with brucite

N'Chwaning III Mine, Kalahari Manganese Fields, Kuruman, Northern Cape, South Africa

In this specimen we can enjoy a rich group of lenticular sturmanite crystals orange, bright, with a yellow to orange color, transparent and with very sharp faces and edges. It is accompanied by rosettes of greenish brucite, a magnesium hydroxide. In the same specimen there are two very interesting species for systematic and aesthetic collectors.


Size: 4.3 x 3.4 x 2.8 cm.
Main crystal: 4 x 3 mm.
Found in 2014.

 
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