Iranite

{{Short description|Triclinic lead copper chromate silicate mineral}}

{{For|the fossil cephalopod "Iranites"|Xenodiscidae}}

{{infobox mineral

| name = Iranite

| image = Phoenicochroite, Iranite-235291.jpg

| imagesize = 260px

| alt =

| caption =

| category = Silicate mineral

| formula = Pb₁₀Cu(CrO₄)₆(SiO₄)₂(F,OH)₂

| IMAsymbol = Irn{{Cite journal|last=Warr|first=L.N.|date=2021|title=IMA–CNMNC approved mineral symbols|url=https://www.cambridge.org/core/journals/mineralogical-magazine/article/imacnmnc-approved-mineral-symbols/62311F45ED37831D78603C6E6B25EE0A|journal=Mineralogical Magazine|volume=85|issue=3 |pages=291–320|doi=10.1180/mgm.2021.43 |bibcode=2021MinM...85..291W |s2cid=235729616 |doi-access=free}}

| strunz = 7.FC.15

| dana =

| symmetry = Triclinic pedial
H-M symbol: (1)
Space group: P1

| unit cell = a = 10.02 Å, b = 9.54 Å, c = 9.89 Å; α = 104.5°, β = 66°, γ = 108.5°; Z = 1

| molweight =

| color = Brown to orange

| colour =

| habit = Equant to flattened euhedral crystals

| system = Triclinic

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| mohs = 3

| luster = Vitreous

| streak = Yellow

| diaphaneity =

| gravity = 5.8

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| opticalprop = Biaxial

| refractive = n_α = 2.250 – 2.300 n_γ = 2.400 – 2.500

| birefringence = δ = 0.150 – 0.200

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| references = [http://www.webmineral.com/data/Iranite.shtml Webmineral data for Iranite]

}}

Iranite (Persian: ایرانیت) is a triclinic lead copper chromate silicate mineral with formula Pb₁₀Cu(CrO₄)₆(SiO₄)₂(F,OH)₂. It was first described from an occurrence in Iran. It is the copper analogue of hemihedrite (Pb₁₀Zn(CrO₄)₆(SiO₄)₂(F,OH)₂).[http://www.mindat.org/min-2040.html Mindat page for Iranite]

It occurs as an oxidation product of hydrothermal lead-bearing veins. Associated minerals include dioptase, fornacite, wulfenite, mimetite, cerussite and diaboleite.[http://rruff.geo.arizona.edu/doclib/hom/iranite.pdf Handbook of Mineralogy] It was first described in 1970 for an occurrence in the Sebarz Mine, northeast of Anarak, Iran.