For the fossil cephalopod "Iranites", see Xenodiscidae.
Iranite
General
Category
Silicate mineral
Formula (repeating unit)
Pb10Cu(CrO4)6(SiO4)2(F,OH)2
IMA symbol
Irn[1]
Strunz classification
7.FC.15
Crystal system
Triclinic
Space group
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
Identification
Color
Brown to orange
Crystal habit
Equant to flattened euhedral crystals
Mohs scale hardness
3
Luster
Vitreous
Streak
Yellow
Specific gravity
5.8
Optical properties
Biaxial
Refractive index
nα = 2.250 – 2.300 nγ = 2.400 – 2.500
Birefringence
δ = 0.150 – 0.200
References
[2][3][4]
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).[3]
It occurs as an oxidation product of hydrothermal lead-bearing veins. Associated minerals include dioptase, fornacite, wulfenite, mimetite, cerussite and diaboleite.[2] It was first described in 1970 for an occurrence in the Sebarz Mine, northeast of Anarak, Iran.[3][2]
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...
and W mine. Raygrantite is a member of the iranite mineral group, which consists of hemihedrite, iranite, and raygrantite. This mineral received its...
mineral Ashburtonite, a rare lead copper silicate-bicarbonate mineral Iranite (Persian: ایرانیت), a lead copper chromate silicate mineral Kinoite, a...
Symbol Name Symbol Name Symbol Name Symbol Ianbruceite Ibc Ilyukhinite Ily Iranite Irn Ivanyukite-Cu Iv-Cu Iangreyite Igy Imandrite Ima Iraqite-(La) Irq-La...
Anarak, Iran. Here murdochite was found in conjunction with khuniite (iranite), chrominium (phoenicochroite), plumangite and an unknown mineral with...
Pb10Zn(CrO4)6(SiO4)2(F,OH)2. It forms a series with the copper analogue iranite. Hemihedrite was first described in 1967 for occurrences in the Florence...
The Changhsingian contains only one ammonoid biozone: that of the genus Iranites. The Changhsingian ended with the Permian–Triassic extinction event, the...
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