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Olmiite with Calcite
Olmiite with Calcite. Front
Front
Olmiite with Calcite. Side
Side
 

TM96N2: A novelty of Tucson 2009. Unusual groups of crystals of irregular contour, more or less oval-shaped. They are pink, and more intense on the terminations. They are on very acute scalenohedrons of Calcite and on matrix. They have come from a single geode. At first we believed they could be Poldervaartite due to the presence of the accompanying Calcite and the pinkish color of the crystals, but the analysis confirms that they are Olmiite (the manganoan end of the series) and not Poldervaartite (the calcian end). We’ll send a copy of the analysis to the buyer of the sample.
The specimen has been reviewed, photographed and published as a new discovery in the magazine ‘Mineral Up’ on page 29 in number 2009/2.
N'Chwaning II Mine, upper levels, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (12/2008)

Specimen size: 3.4 × 2.3 × 3.8 cm = 1.34” × 0.91” × 1.50”

Fluorescent long & short UV

Type locality



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