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Achalaite ((Fe, Mn)(Ti, Fe, Ta)(Nb, Ta)₂O₈) is a black mineral of the wodginite group, first discovered in 2013.

It crystallizes in the monoclinic system and has a dark, metallic luster, a specific gravity of 6.285 and a Mohs hardness of 5.5.

Achalaite occurs in the intermediate zone of topaz- and tantalite-bearing pegmatite. Associated minerals include rutile, quartz and albite.

Its name comes from the type locality: the Achala batholith in Córdoba, Argentina and the mineral has been approved by the IMA with the acronym 2013-103.

References

1. Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
2. ^ "Achalaite". Mindat.org. Retrieved 8 March 2019.
3. "The New IMA List of Minerals – A Work in Progress – Updated: July 2016" (PDF). International Mineralogical Association COMMISSION ON NEW MINERALS, NOMENCLATURE AND CLASSIFICATION. Archived from the original (PDF) on 9 September 2016. Retrieved 8 March 2019.
4. ^ "Achalaite Fe2+TiNb2O8" (PDF). Handbook of Mineralogy. Retrieved 8 March 2019.

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• Manganese minerals
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