Mineral Specimen Images (I)

Iodargyrite: AgI  
Embolite: Ag(Br,Cl)

Comments: Cubo-octahedral crystals of iodaryrite (I) with smaller and darker octahedral crystals of embolite (E).
Location: Broken Hill, New South Wales, Australia. Scale: Specimen size 2x1 cm.
© Dave Barthelmy

Iodargyrite: AgI  
Coronadite: Pb(Mn++++,Mn++)8O16

Comments: Dark, fine-grained massive coronadite with yellowish octahedral iodargyrite crystals.
Location: Broken Hill, New South Wales, Australia. Scale: Picture size 3x2 cm.
© Dave Barthelmy

Iowaite: Mg4Fe+++(OH)8OCl·2-4(H2O)

Comments: Floater crystal of iowaite.
Location: Palabora Mine, Transvaal, South Africa. Scale: Crystal size 1.2 cm.
© John Veevaert

Iowaite: Mg4Fe+++(OH)8OCl·2-4(H2O)

Comments: Floater crystal of iowaite.
Location: Palabora Mine, Transvaal, South Africa. Scale: Crystal size 1.2 cm.
© John Veevaert

Iquiqueite: K3Na4Mg(Cr++++++O4)B24O39(OH)·12(H2O)  
Nitratine: NaNO3

Comments: Yellow iquiqueiite in clear, massive nitration.
Location: Salar de Miraje, Antofagasta, Chile. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Iquiqueite: K3Na4Mg(Cr++++++O4)B24O39(OH)·12(H2O)  
Nitratine: NaNO3

Comments: Yellow iquiqueiite in clear, massive nitration.
Location: Salar de Miraje, Antofagasta, Chile. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Iranite: Pb10Cu(CrO4)6(SiO4)2(F,OH)2

Comments: Crystals of iranite to 3mm on brecciated, siliceous matrix.
Location: Sebarz mine, Anarak, Iran. Scale: 3.7 x 2.5 cm.
© John Veevaert

Iranite: Pb10Cu(CrO4)6(SiO4)2(F,OH)2

Comments: Crystals of iranite to 3mm on brecciated, siliceous matrix.
Location: Sebarz mine, Anarak, Iran. Scale: 3.7 x 2.5 cm.
© John Veevaert

Irarsite: (Ir,Ru,Rh,Pt)AsS  
Ruthenarsenite: (Ru,Ni)As

Comments: Photomicrograph of the largest inclusion of ruthenarsenite (Ru) associated with irarsite inclusions (Ir) in a rutheniridosmine matrix. (CanMin, v12:280).
Location: Papua New Guinea. Scale: See Image.
© Canadian Mineralogist

Irarsite: (Ir,Ru,Rh,Pt)AsS  
Ruthenarsenite: (Ru,Ni)As

Comments: Photomicrograph of the largest inclusion of ruthenarsenite (Ru) associated with irarsite inclusions (Ir) in a rutheniridosmine matrix. (CanMin, v12:280).
Location: Papua New Guinea. Scale: See Image.
© Canadian Mineralogist

Irhtemite: Ca4Mg(AsO3OH)2(AsO4)2·4(H2O)

Comments: Pink acicular divergent microcrystals of irhtemite on matrix.
Location: Irhtem Mine, near Bou-Azzer, Ouarzazate, Morocco. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Irhtemite: Ca4Mg(AsO3OH)2(AsO4)2·4(H2O)

Comments: Pink acicular divergent microcrystals of irhtemite on matrix.
Location: Irhtem Mine, near Bou-Azzer, Ouarzazate, Morocco. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Iridium: (Ir,Os,Ru,Pt)

Comments: Silvery metallic crystalline iridium micrograin and irregular nuggets.
Location: Fox Gulch, Goodnews Bay, Alaska, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Iridium: (Ir,Os,Ru,Pt)

Comments: Silvery metallic crystalline iridium micrograin and irregular nuggets.
Location: Fox Gulch, Goodnews Bay, Alaska, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Iriginite: (UO2)(Mo++++++2O7)·3(H2O)  
Mourite: U++++Mo++++++5O12(OH)10

Comments: Purple to violet sub-metallic mourite coatings with yellow iriginite.
Location: 'North Caucasus', probably Kyzylsai Deposit, Chu-Ili Mountains, Balkhash, Zezkazgan, Kazakhstan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Iriginite: (UO2)(Mo++++++2O7)·3(H2O)

Comments: Yellow aggregates of iriginite on matrix.
Location: Cameron area, Coconino County, Arizona, USA. Scale: Picture size 2.5 mm.
© Thomas Witzke / Abraxas-Verlag

Iriginite: (UO2)(Mo++++++2O7)·3(H2O)

Comments: Yellow aggregates of iriginite on matrix.
Location: Cameron area, Coconino County, Arizona, USA. Scale: Picture size 2.5 mm.
© Thomas Witzke / Abraxas-Verlag

Iriginite: (UO2)(Mo++++++2O7)·3(H2O)  
Mourite: U++++Mo++++++5O12(OH)10

Comments: Purple to violet sub-metallic mourite coatings with yellow iriginite.
Location: 'North Caucasus', probably Kyzylsai Deposit, Chu-Ili Mountains, Balkhash, Zezkazgan, Kazakhstan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Iron: Fe

Comments: Specimen of volcanic rock containing dark gray grains of native Iron. This locality is one of the very few known localities for terrestrial native iron.
Location: Disko Island, Greenland. Scale: Picture size 1 cm.
© John Veevaert

Iron: Fe

Comments: Specimen of volcanic rock containing dark gray grains of native Iron. This locality is one of the very few known localities for terrestrial native iron.
Location: Disko Island, Greenland. Scale: Picture size 1 cm.
© John Veevaert