Limonite (Iron Ore)
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
sedimentary
Category
Mineral (Metamorphic Pseudomorph)
Browse mineral (metamorphic pseudomorph) specimens identified by the Rock Identifier community.
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Polished tiger’s-eye
Quartz variety with fibrous crocidolite pseudomorphs; mainly SiO₂
metamorphic
Tiger’s eye
Quartz (SiO₂) with fibrous crocidolite pseudomorphs and iron oxides
metamorphic
Limonite (Ironstone)
Hydrated Iron Oxide (FeO(OH)·nH2O)
mineral
Limonite (Iron Ore/Bog Iron)
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
mineral
Polished golden-brown banded stone, likely tiger’s eye
Tiger’s eye (quartz with fibrous crocidolite pseudomorphs; SiO₂)
metamorphic
Azurite with Malachite and Limonite
Azurite Cu3(CO3)2(OH)2 / Malachite Cu2CO3(OH)2
mineral
Limonite (Yellow Ochre)
FeO(OH)·nH2O (Hydrous iron(III) oxide-hydroxide mixture)
Mineral (Iron Ore)
Limonite with Quartz (Gossan)
Hydrated iron(III) oxide-hydroxide mixture (FeO(OH)·nH2O) with Silicon Dioxide (SiO2)
Mineral
Limonite/Goethite (Iron Ore)
Hydrous ferric oxides (FeO(OH)·nH2O)
mineral
Tiger’s eye
Quartz variety, primarily silicon dioxide (SiO₂); fibrous quartz pseudomorph after crocidolite asbestos
gemstone
Tiger's Eye
Tiger's Eye (a variety of Chalcedony, which is cryptocrystalline quartz). Chemical Formula: SiO2 with inclusions of crocidolite fibers.
Mineral
Azurite and Malachite
Cu3(CO3)2(OH)2 (Azurite) and Cu2(CO3)(OH)2 (Malachite)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Limonite Pseudomorph after Pyrite
Limonite (Hydrous iron oxides, FeO(OH)·nH2O) replacing Pyrite (FeS2)
mineral
Azurite and Malachite
Cu3(CO3)2(OH)2 (Azurite) / Cu2CO3(OH)2 (Malachite)
mineral
Lepidolite and Tiger's Eye
K(Li,Al)3(Si,Al)4O10(F,OH)2 (Lepidolite) / SiO2 (Quartz/Tiger's Eye)
mineral
Tiger's Eye
Silicon Dioxide (Quartz pseudomorph after crocidolite), SiO2
mineral
Limonite (vibrant yellowish-brown iron oxide)
Limonite (FeO(OH)·nH2O)
mineral
Blue Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of asbestiform silicates)
mineral
Limonite / Ironstone Nodule
Limonite (Hydrated iron(III) oxide-hydroxide), FeO(OH)·nH2O
mineral
Limonite (Iron Ore)
Limonite (̑FeO(OH)·nH₂O)
sedimentary
Tumbled tiger’s eye
Tiger’s eye, a quartz-rich pseudomorph after crocidolite (fibrous riebeckite)
metamorphic
Yellow Ochre / Limonite
Limonite (FeO(OH)·nH2O)
Mineral
Petrified Wood
Silicified Wood (primarily SiO2)
fossil
Tumbled tiger’s eye
Tiger’s eye (chatoyant quartz), SiO₂ with fibrous crocidolite pseudomorphs
mineral
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Blue Tiger's Eye
Crocidolite (fibrous riebeckite) silicified to Quartz (SiO2)
Mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Hawk's Eye (Blue Tiger's Eye)
Quartz (fibrous crocidolite variety)
Mineral
Polished tiger’s eye
Quartz variety, SiO₂, with parallel fibrous amphibole pseudomorphs (crocidolite)
metamorphic
Tumbled tiger’s eye
Quartz variety, chiefly SiO₂ with fibrous riebeckite/crocidolite pseudomorphs
metamorphic
Tiger’s-eye-bearing quartzite
Quartzite, chiefly SiO₂, with fibrous crocidolite pseudomorphs and iron oxides
metamorphic
Tumbled tiger’s-eye
Quartz variety, mainly fibrous chalcedony with crocidolite pseudomorphs; SiO₂
metamorphic
Tumbled tiger’s-eye
Quartz (SiO₂), fibrous golden-brown variety with crocidolite pseudomorphs
metamorphic
Limonite (Iron Stone/Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
mineral
Limonite after Pyrite (Pseudomorph)
FeO(OH)·nH2O following FeS2
mineral
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide)
mineral
Tiger's Eye
Silicon Dioxide (Quartz pseudomorph after crocidolite), SiO2
mineral
Blue Tiger's Eye (Hawk's Eye)
Silicified Crocidolite (Silicon Dioxide with inclusions of Crocidolite), SiO2
Mineral
Limonite (Gozzany Iron)
Limonite (FeO(OH)·nH2O)
mineral
Limonite (Iron Stone/Gossen)
Limonite (FeO(OH)·nH2O)
mineral