Properties & Information
Isua
IsuaSCIENCE / MINERALOGYIsua is a trade/locality name for ancient metamorphic rock from the Isua Greenstone Belt near Nuuk, Greenland. The belt contains some of Earth's oldest well-preserved supracrustal rocks, approximately...
Isua
IsuaSCIENCE / MINERALOGYIsua is a trade/locality name for ancient metamorphic rock from the Isua Greenstone Belt near Nuuk, Greenland. The belt contains some of Earth's oldest well-preserved supracrustal rocks, approximately...
Irnimite
IrnimiteSCIENCE / MINERALOGYIrnimite is a trade name for a rare blue to violet microquartzite or jasper-like rock containing richterite, piemontite, manganese oxides, and other accessory phases. The silica-rich host gives...
Irnimite
IrnimiteSCIENCE / MINERALOGYIrnimite is a trade name for a rare blue to violet microquartzite or jasper-like rock containing richterite, piemontite, manganese oxides, and other accessory phases. The silica-rich host gives...
Iris Agate
Iris AgateSCIENCE / MINERALOGYIris Agate is an exceptionally fine-banded variety of agate that can display spectral rainbow colors when thin slices are viewed in transmitted light. The effect results from...
Iris Agate
Iris AgateSCIENCE / MINERALOGYIris Agate is an exceptionally fine-banded variety of agate that can display spectral rainbow colors when thin slices are viewed in transmitted light. The effect results from...
Iridescent Limonite
Iridescent LimoniteSCIENCE / MINERALOGYLimonite is a field and rock term for mixtures of hydrated iron oxides and oxyhydroxides, commonly dominated by goethite with variable lepidocrocite, hematite, clays, and water. Iridescent...
Iridescent Limonite
Iridescent LimoniteSCIENCE / MINERALOGYLimonite is a field and rock term for mixtures of hydrated iron oxides and oxyhydroxides, commonly dominated by goethite with variable lepidocrocite, hematite, clays, and water. Iridescent...
Iridescent Goethite (Turgite)
Iridescent Goethite (Turgite)SCIENCE / MINERALOGYIridescent Goethite is iron oxyhydroxide, FeO(OH), showing metallic rainbow tarnish or thin-film colors. The older term 'turgite' has historically been applied to mixtures or intermediate-looking hydrated...
Iridescent Goethite (Turgite)
Iridescent Goethite (Turgite)SCIENCE / MINERALOGYIridescent Goethite is iron oxyhydroxide, FeO(OH), showing metallic rainbow tarnish or thin-film colors. The older term 'turgite' has historically been applied to mixtures or intermediate-looking hydrated...
Iridescent Calcite
Iridescent CalciteSCIENCE / MINERALOGYIridescent Calcite is calcite, CaCO₃, displaying rainbow colors caused by thin-film interference, internal fractures, surface alteration, microscopic coatings, or closely spaced cleavage features. The rainbow effect is...
Iridescent Calcite
Iridescent CalciteSCIENCE / MINERALOGYIridescent Calcite is calcite, CaCO₃, displaying rainbow colors caused by thin-film interference, internal fractures, surface alteration, microscopic coatings, or closely spaced cleavage features. The rainbow effect is...