Olmiite

May 2, 2026 - 05:35
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Olmiite

Occurrences and localities: Clean up spacing around commas and other punctuation fixes, replaced: ],[ → ], [

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== Occurrences and localities ==
== Occurrences and localities ==
Olmiite is a product of hydrothermal alteration. As such, it grows in manganese-rich hydrothermal replacement deposits. The crystals form by going through metamorphosis due to the hot hydrothermal fluids passing through a manganese deposit, adding silicon and calcium to the pre-existing elements. To this day, the only known locality of this mineral is in the Kalahari Manganese Field of South Africa. It has been found in both the Wessels Mine in Hotazel and in the N'Chwaning Mines in Kuruman within the Manganese Field's region. It is associated with [[calcite]], [[manganite]], [[bultfonteinite]], [[oyelite]], [[hematite]], [[Celestine (mineral)|celestine]], [[sturmanite]], and poldervaartite, [[baryte]], [[datolite]],[[andradite]], [[thaumasite]], [[caryopilite]] and [[gageite]]. Not only is it a rare mineral, but rare as a gem as well, since most of the crystals are unsuitable for faceting. Due to its softness, it cannot be used in jewelries, so the faceted specimens are made for the collectors.
Olmiite is a product of hydrothermal alteration. As such, it grows in manganese-rich hydrothermal replacement deposits. The crystals form by going through metamorphosis due to the hot hydrothermal fluids passing through a manganese deposit, adding silicon and calcium to the pre-existing elements. To this day, the only known locality of this mineral is in the Kalahari Manganese Field of South Africa. It has been found in both the Wessels Mine in Hotazel and in the N'Chwaning Mines in Kuruman within the Manganese Field's region. It is associated with [[calcite]], [[manganite]], [[bultfonteinite]], [[oyelite]], [[hematite]], [[Celestine (mineral)|celestine]], [[sturmanite]], and poldervaartite, [[baryte]], [[datolite]], [[andradite]], [[thaumasite]], [[caryopilite]] and [[gageite]]. Not only is it a rare mineral, but rare as a gem as well, since most of the crystals are unsuitable for faceting. Due to its softness, it cannot be used in jewelries, so the faceted specimens are made for the collectors.


==References==
==References==
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