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- Iddingsite abstract "Iddingsite is a microcrystalline rock that is derived from alteration of olivine. It is usually studied as a mineral, and consists of a mixture of remnant olivine, clay minerals, iron oxides and ferrihydrites. Debates over iddingsite's non-definite crystal structure caused it to be de-listed as an official mineral by the IMA; thus it is properly referred to as a rock.Iddingsite forms from the weathering of basalt in the presence of liquid water and can be described as a phenocryst, i.e. it has megascopically visible crystals in a fine-grained groundmass of a porphyritic rock. It is a pseudomorph that has a composition that is constantly transforming from the original olivine that pass though many stages of structural and chemical change to create a fully altered iddingsite.Because iddingsite is constantly transforming it does not have a definite structure or a definite chemical composition. The chemical formula for iddingsite has been approximated as MgO * Fe2O3 * 4 H2O where MgO can be substituted by CaO. The geologic occurrence of iddingsite is limited to extrusive or subvolcanic rocks that are formed by injection of magma near the surface. It is absent from deep-seated rocks and is found on meteorites. As it has been found on Martian meteorites, its ages have been calculated to obtain absolute ages when liquid water was at or near the surface of Mars.".
- Iddingsite thumbnail Iddingsite.JPG?width=300.
- Iddingsite wikiPageExternalLink lecture16.html.
- Iddingsite wikiPageID "14602813".
- Iddingsite wikiPageLength "12982".
- Iddingsite wikiPageOutDegree "32".
- Iddingsite wikiPageRevisionID "636864106".
- Iddingsite wikiPageWikiLink Australia.
- Iddingsite wikiPageWikiLink Basalt.
- Iddingsite wikiPageWikiLink Birefringence.
- Iddingsite wikiPageWikiLink Category:Minerals.
- Iddingsite wikiPageWikiLink Clay_minerals.
- Iddingsite wikiPageWikiLink Cryptocrystalline.
- Iddingsite wikiPageWikiLink Ferrihydrite.
- Iddingsite wikiPageWikiLink Goethite.
- Iddingsite wikiPageWikiLink Hematite.
- Iddingsite wikiPageWikiLink International_Mineralogical_Association.
- Iddingsite wikiPageWikiLink Iron_oxide.
- Iddingsite wikiPageWikiLink Lismore,_New_South_Wales.
- Iddingsite wikiPageWikiLink Magma.
- Iddingsite wikiPageWikiLink Mars.
- Iddingsite wikiPageWikiLink Meteorite.
- Iddingsite wikiPageWikiLink Micrograph.
- Iddingsite wikiPageWikiLink New_South_Wales.
- Iddingsite wikiPageWikiLink Olivine.
- Iddingsite wikiPageWikiLink Orthorhombic_crystal_system.
- Iddingsite wikiPageWikiLink Phenocryst.
- Iddingsite wikiPageWikiLink Pleochroism.
- Iddingsite wikiPageWikiLink Porphyritic.
- Iddingsite wikiPageWikiLink Pseudomorph.
- Iddingsite wikiPageWikiLink Silicate.
- Iddingsite wikiPageWikiLink Silicate_minerals.
- Iddingsite wikiPageWikiLink Spinel.
- Iddingsite wikiPageWikiLink Subvolcanic_rock.
- Iddingsite wikiPageWikiLink Water_on_Mars.
- Iddingsite wikiPageWikiLink X-ray_crystallography.
- Iddingsite wikiPageWikiLink Ångström.
- Iddingsite wikiPageWikiLinkText "Iddingsite".
- Iddingsite wikiPageWikiLinkText "iddingsite".
- Iddingsite caption "Olivine weathering to iddingsite".
- Iddingsite caption "Photomicrograph of iddingsite".
- Iddingsite category Silicate_minerals.
- Iddingsite cleavage "Perfect".
- Iddingsite color "Brown".
- Iddingsite composition "Olivine, clays, ferrihydrites".
- Iddingsite diaphaneity "Transparent to translucent".
- Iddingsite formula "MgFe2Si3O10•4".
- Iddingsite gravity "2.5".
- Iddingsite habit "Foliated".
- Iddingsite imageSize "250".
- Iddingsite luster "Vitreous".
- Iddingsite mohs "3".
- Iddingsite name "Iddingsite".
- Iddingsite opticalprop "Biaxial".
- Iddingsite streak "None".
- Iddingsite system Orthorhombic_crystal_system.
- Iddingsite type "Igneous".
- Iddingsite wikiPageUsesTemplate Template:Infobox_mineral.
- Iddingsite wikiPageUsesTemplate Template:Infobox_rock.
- Iddingsite wikiPageUsesTemplate Template:Refbegin.
- Iddingsite wikiPageUsesTemplate Template:Refend.
- Iddingsite wikiPageUsesTemplate Template:Reflist.
- Iddingsite subject Category:Minerals.
- Iddingsite hypernym Rock.
- Iddingsite type Band.
- Iddingsite type ChemicalSubstance.
- Iddingsite type Mineral.
- Iddingsite type ChemicalObject.
- Iddingsite type Thing.
- Iddingsite type Q7946.
- Iddingsite comment "Iddingsite is a microcrystalline rock that is derived from alteration of olivine. It is usually studied as a mineral, and consists of a mixture of remnant olivine, clay minerals, iron oxides and ferrihydrites. Debates over iddingsite's non-definite crystal structure caused it to be de-listed as an official mineral by the IMA; thus it is properly referred to as a rock.Iddingsite forms from the weathering of basalt in the presence of liquid water and can be described as a phenocryst, i.e.".
- Iddingsite label "Iddingsite".
- Iddingsite sameAs Q1537499.
- Iddingsite sameAs Iddingsita.
- Iddingsite sameAs Iddingsit.
- Iddingsite sameAs Iddingsita.
- Iddingsite sameAs Iddingsite.
- Iddingsite sameAs Iddingsite.
- Iddingsite sameAs Iddingsyt.
- Iddingsite sameAs m.03d977j.
- Iddingsite sameAs Q1537499.
- Iddingsite wasDerivedFrom Iddingsite?oldid=636864106.
- Iddingsite depiction Iddingsite.JPG.
- Iddingsite isPrimaryTopicOf Iddingsite.
- Iddingsite name "Iddingsite".