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Fleischerite is a type of mineral. Named after Michael Fleischer, a co-founder of the International Mineralogical Association. Recognized in 1960. Has its own group made of itself, schaurteite, despujolsite, mallestigite, and genplesite. It is often confused with dundasite.

Occurrence

Fleischerite is found only in Tsumeb (Ongopolo) Mine, Namibia. It forms in oxidized portions of a dolostone-hosted hydrothermal germanium-bearing polymetallic ore deposits. The oldest samples are estimated to be 541 million years old.

Appearance

Very thin, up to 1.5 cm in length crystals with a tender reddish hue that form sheets of subparallel individuals or hedgehog-like aggregates.

Paragenesis with other minerals

1. When fleischerite, cerussite, and mimetite cover a tennantite matrix, they create a rounded, matte white concretion.
2. When a dolostone core is covered with plumbojarosite and mimetite, which give it a greenish hue, fleischerite grows on top of them all.
3. Rarely, fleischerite enters paragenesis with alamosite, anglesite, hematite, leadhillite, melanotekite, mimetite, kegelite, larsenite, plumbojarosite, plumbotsumite and queitite.
4. Fleischerite also may have paragenesis with other secondary germanium minerals.

References

1. "Fleischerite". mindat.org. Retrieved 2024-11-14.
2. "The Fleischerite Group of Minerals | Fred Haynes". 2016-12-14. Retrieved 2024-11-14.
3. "Fleischerite Mineral Data". webmineral.com. Retrieved 2024-11-14.
4. "Dynamic Earth Collection - About". dynamicearthcollection.com. Retrieved 2024-11-14.
5. ^ "fleischerite". mingen.hk. Retrieved 2024-12-05.

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