Goethite [ FeO(OH) ]

Material properties

Formulas FeO(OH), FeOOH
Abbreviation Gth
Variant Al
Classifications Minerals containing OH, Diaspore (group), Iron oxide/hydroxide
Luminescence emitters H2O, H-O-H, OH
IMA Status Approved (IMA 1980 s.p.)
Search other databases webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Related materials Feroxyhyte, Lepidocrocite
Crystal symmetry Orthorhombic, Point group mmm
Tags Mineral, Hydroxide, Hydroxide

Composition

Element Atoms
H 1
Fe 1
O 2
Total: 4

Specimens of Goethite

Name Owner Materials Phase purity Image
M0310 Goethite CSIRO Goethite (99.6%) 99.6
M0760 Goethite CSIRO Goethite (99.5%) 99.5
M0773 Goethite CSIRO Goethite (99.2%) 99.2
M0791 Goethite CSIRO Goethite (99.2%) 99.2
M0781 Goethite CSIRO Goethite (98.6%), Quartz 98.6
M0652 Goethite CSIRO Goethite (92.0%), Muscovite-2M1, Quartz 92.0
M0765 Goethite CSIRO Goethite (91.9%), Kaolinite, Quartz 91.9
M0776 Goethite / Quartz CSIRO Goethite (81.3%), Magnetite, Quartz 81.3
MT8364 Goethite / Lepidocrocite CSIRO Goethite (79.8%), Lepidocrocite 79.8
M2229 Goethite / Quartz CSIRO Goethite (76.7%), Hematite, Quartz 76.7
M0774 Goethite / Microcline CSIRO Goethite (75.1%), Microcline, Muscovite-1M, Muscovite-2M1, Quartz 75.1
M0762 Goethite CSIRO Goethite (74.2%), Kaolinite, Muscovite-1M, Muscovite-2M1, Orthoclase, Quartz 74.2
M2757 Goethite / Akaganeite CSIRO Akaganeite, Goethite (72.6%) 72.6
M0891 Goethite / Montmorillonite CSIRO Goethite (66.8%), Hematite, Microcline, Montmorillonite, Quartz 66.8
M2783 Goethite / Quartz CSIRO Cassiterite, Goethite (58.7%), Quartz 58.7
M2728 Goethite / Siderite CSIRO Calcite, Goethite (56.1%), Hematite, Siderite 56.1
M1646 Goethite / Malachite / Hematite CSIRO Goethite (53.8%), Hematite, Malachite, Montmorillonite, Quartz 53.8
M0656 Goethite / Cuprite CSIRO Clinochlore, Fe, Cuprite, Fluorite, Goethite (49.6%), Hematite, Malachite, Quartz 49.6
M0777 Quartz / Goethite CSIRO Goethite (44.3%), Hematite, Quartz 44.3
M0945 Microcline / Goethite / Cuprite CSIRO Cuprite, Goethite (18.6%), Malachite, Microcline, Quartz 18.6
M2803 Malachite / Montmorillonite / Goethite CSIRO Goethite (18.3%), Hematite, Malachite, Montmorillonite, Quartz 18.3
M0801 Hematite / Quartz / Goethite CSIRO Goethite (14.8%), Hematite, Quartz 14.8
M2032 Quartz / Hematite / Goethite CSIRO Goethite (12.3%), Hematite, Malachite, Quartz 12.3
M0764 Hematite / Quartz / Goethite CSIRO Goethite (11.9%), Hematite, Magnetite, Quartz 11.9
M2657 Chalcopyrite / Marcasite / Pyrite CSIRO Chalcopyrite, Goethite (9.6%), Jarosite, Marcasite, Pyrite 9.6