BREAKING NEWS
Cloud Server Hosting For Online Businesses
Inexpensive SEO Services
Benefits of Wanting to play Free Online Slot machines
Achalaite

Summary

Achalaite ((Fe2+, Mn)(Ti, Fe3+, Ta)(Nb, Ta)2O8) is a black mineral of the wodginite group, first discovered in 2013.[3]

Achalaite
General
CategoryMineral
Formula
(repeating unit)		(Fe2+,Mn)(Ti,Fe3+,Ta)(Nb,Ta)2O8
IMA symbolAhl[1]
Strunz classification4.D0.
Crystal systemMonoclinic
Unit cella = 9.422(4) [Å], b = 11.427(3) [Å]
c = 5.120(1) [Å]; β = 90.12°; Z = 4[2]
Identification
ColorBlack
Crystal habitfibrous
Mohs scale hardness5.5
Lustermetallic
Streakblack
Specific gravity6.285
Density6.285 g/cm3
PleochroismNon-pleochroic
References[2]

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.[4]

Achalaite occurs in the intermediate zone of topaz- and tantalite-bearing pegmatite.[4] Associated minerals include rutile, quartz and albite.[2]

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.[2]

References edit

 
Look up achalaite in Wiktionary, the free dictionary.
  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. ^ a b c d "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. ^ a b "Achalaite Fe2+TiNb2O8" (PDF). Handbook of Mineralogy. Retrieved 8 March 2019.