The Mineral olmiite
Olmiite is a relatively new mineral, only being officially named as a new species by the IMA
in 2006. To date, it is found only in the Kalahari Manganese Field of South Africa. It is unusual for a newly discovered mineral to form is such large and excellent examples, with many well-formed and highly aesthetic examples of this mineral.
Olmiite forms a solid solution series
with the much rarer mineral Poldervaartite
. Many specimens that had been labelled as Poldervaartite have in fact been Olmiite upon analysis. Olmiite is named after Filippo Olmi, an Italian mineralogist from Florence, Italy.
Pale yellow, tan, orange-brown, orange, peach, pink, light red, grayish-pink, light gray
Well formed Olmiite examples with good color and form are highly valued by mineral collectors.
Olmiite has only been found in the Kalahari Manganese Field of South Africa, where it has been found both at the N'Chwaning Mines in Kuruman and the Wessels Mine in Hotazel.
Common Mineral Associations
Bultfonteinite, Calcite, Oyelite, Manganite