Rodalquilarite

(repeating unit)H3Fe3+2(Te4+O3)4ClIMA symbolRaq[1]Strunz classification4.JL.05Crystal systemTriclinicCrystal classPinacoidal (1)
(same H-M symbol)Space groupP1Unit cella = 8.95 Å, b = 5.09 Å
c = 6.63 Å; α = 103.17°
β = 107.08°, γ = 77.87°; Z = 1IdentificationColorEmerald- to grass-greenCrystal habitCrusts of stout crystalsCleavageOne good cleavage planeTenacityVery brittleMohs scale hardness2 - 3LusterGreasyStreakGreenish yellowDiaphaneitySemitransparentSpecific gravity4.97 - 5.15Optical propertiesBiaxial (-)Refractive indexnα = 2.100 nγ = 2.200Birefringenceδ = 0.1002V angle38°References[2][3][4]

Rodalquilarite is a rare iron tellurite chloride mineral with formula H3Fe3+2(Te4+O3)4Cl[2] or Fe2(TeO2OH)3(TeO3)Cl.[3] Rodalquilarite crystallizes in the triclinic system and typically occurs as stout green prisms and encrustations.

Discovery and occurrence

Green rodalquilarite crystals in a vug in pink alunite from Chile

Rodalquilarite was first described in 1968 for an occurrence in the Rodalquilar gold deposit of Almeria, Spain and was named for the discovery locality. It has also been reported from the Wendy open pit mine, El Indio-Tambo district, Coquimbo Region of Chile and the mines of Tombstone, Arizona.[2] It is found in the oxidized zone of tellurium-bearing gold deposits. It occurs associated with emmonsite, native gold, alunite, jarosite, quartz, native tellurium, mackayite and sonoraite.[2]

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. ^ a b c d Rodalquilarite in the Handbook of Mineralogy
  3. ^ a b Rodalquilarite on Mindat.org
  4. ^ Rodalquilarite data on Webmineral
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Selenites, selenates, tellurites, and tellurates
Selenites 28.1
Ahlfeldite Chalcomenite Clinochalcomenite Cobaltomenite Demesmaekerite Derriksite Francisite Guilleminite Haynesite Mandarinoite Marthozite Molybdomenite Sofiite
Selenates 28.2
Olsacherite Schmiederite
Tellurites 28.3
Balyakinite Blakeite Cesbronite Chekhovichite Choloalite Cliffordite Denningite Emmonsite Eztlite Fairbankite Graemite Keystoneite Kinichilite Mackayite Moctezumite Mroseite Plumbotellurite Poughite Quetzalcoatlite Rajite Rodalquilarite Schmitterite Smirnite Sonoraite Spiroffite Teineite Winstanleyite Zemannite
Tellurates 28.4
Carlfriesite Cheremnykhite Cuzticite Dugganite Girdite Khinite Khinite-3T Kuksite Kuranakhite Montanite Oboyerite Schieffelinite Tlalocite Tlapallite Xocomecatlite Yafsoanite Yecoraite