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Olmiite (Poldervaartite)
Olmiite (Poldervaartite) Olmiite (Poldervaartite)
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Olmiite (Poldervaartite) (Ref: 8.AE-945)

N Chwaning II Mine, Kalahari Manganese Filed, Northern Cape Province, South Africa
29mm x 28mm x 8mm
minID: JC8-MY2
$180
A cute thumbnail of what was once a very rare mineral. This find was very important and large, the mineral was no long incredibly rare and it was also realized most of these were actually more accurately identified as another rare mineral, Olmiite. The South African discovery was and is the world's best and for all practical purposes the only locality for good specimens. This piece has a nice 1.8 CM crystal with the faces showing complex modification so it looks stepped and rounded. In fine condition, the color seems to vary depending on the light source from a brownish to orange hue. The matrix is a thin plate with a druse of clear Calcite crystals.
Data last checked on 19th Jan 2022 - specimen may no longer be available

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See Also

Olmiite
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa
$180 *
27mm x 20mm x 21mm
Olmiite with Calcite and Oyelite
N'Chwaning II Mine, level 45 south, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa
$248 *
29mm x 16mm x 21mm
Olmiite
N'Chwaning II Mine, section 5 south, stope 46-47 roof, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa
$124 *
25mm x 20mm x 14mm
Olmiite
N'Chwaning II Mine, section 5 south, stope 46-47 roof, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa
$316 *
32mm x 28mm x 21mm
Olmiite
N'Chwaning Mines, Kuruman, Kalahari manganese field, Northern Cape Province, South Africa
$68 *
23mm x 13mm x 12mm
Olmiite
N'Chwaning Mines, Kuruman, Kalahari manganese field, Northern Cape Province, South Africa
$51 *
23mm x 13mm x 12mm
Olmiite
N Chwaning Mine, Kalahari Fields, Kuruman, Northern Cape Province, South Africa
$90
38mm x 34mm x 22mm
Olmiite with Oyelite and Calcite
N'Chwaning II Mine, Kalahari Manganese Fields , South Africa
$203 *
63mm x 42mm x 18mm
Olmiite with Calcite on Goethite
"Derek Pocket", N'Chwaning II Mine, Kalahari Manganese Field,, South Africa
$237 *
50mm x 42mm x 33mm
Olmiite
N'Chwaning II Mine, Kalahari Manganese Fields, South Africa
$68 *
70mm x 63mm x 20mm
Olmiite
N'Chwaning II Mine, Kalahari Manganese Fields, South Africa
$56 *
43mm x 28mm x 35mm
Olmiite with Calcite
N'Chwaning II Mine, Kalahari Manganese Fields, South Africa
$51 *
42mm x 33mm x 25mm
Olmiite
N'Chwaning II Mine, Kalahari Manganese Fields, South Africa
$51 *
53mm x 33mm x 18mm
Olmiite
N'Chwaning II Mine, Kalahari, South Africa
$300
30mm x 20mm x 20mm
Olmiite
N'Chwaning II mine, Northern Cape Province, South Africa
$675
70mm x 50mm x 15mm
* price is an approximate conversion and may not be accurate.

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