(repeating unit) H3 Fe3+ 2 (Te4+ O3 )4 Cl IMA symbol Raq[ 1] Strunz classification 4.JL.05 Crystal system Triclinic Crystal class Pinacoidal (1 ) (same H-M symbol) Space group P 1 Unit cell a = 8.95 Å, b = 5.09 Å c = 6.63 Å; α = 103.17° β = 107.08°, γ = 77.87°; Z = 1 Identification Color Emerald- to grass-green Crystal habit Crusts of stout crystals Cleavage One good cleavage plane Tenacity Very brittle Mohs scale hardness 2 - 3 Luster Greasy Streak Greenish yellow Diaphaneity Semitransparent Specific gravity 4.97 - 5.15 Optical properties Biaxial (-) Refractive index nα = 2.100 nγ = 2.200 Birefringence δ = 0.100 2V angle 38° References [ 2] [ 3] [ 4] Rodalquilarite is a rare iron tellurite chloride mineral with formula H3 Fe3+ 2 (Te4+ O3 )4 Cl[ 2] or Fe2 (TeO2 OH)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 ^ 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. ^ a b c d Rodalquilarite in the Handbook of Mineralogy ^ a b Rodalquilarite on Mindat.org ^ Rodalquilarite data on Webmineral Selenites, selenates, tellurites, and tellurates
Selenites 28.1 Selenates 28.2Tellurites 28.3Balyakinite 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