[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:55642":3},{"id":4,"longid":5,"guid":6,"name":7,"shortcode_ima":8,"entrytype":9,"entrytype_text":10,"varietyof":11,"synid":8,"polytypeof":8,"groupid":8,"weighting":12,"nolocadd":13,"blacklisted":13,"mindat_formula":14,"mindat_formula_note":8,"ima_formula":8,"elements":15,"sigelements":19,"key_elements":8,"impurities":8,"cim":8,"ima_status":8,"ima_notes":8,"ima_history":8,"approval_year":8,"publication_year":20,"discovery_year":8,"strunz10ed1":21,"strunz10ed2":21,"strunz10ed3":21,"strunz10ed4":8,"dana8ed1":8,"dana8ed2":8,"dana8ed3":8,"dana8ed4":8,"csystem":8,"cclass":8,"spacegroup":8,"spacegroupset":21,"a":8,"b":8,"c":8,"alpha":8,"beta":8,"gamma":8,"aerror":8,"berror":8,"cerror":8,"alphaerror":8,"betaerror":8,"gammaerror":8,"va3":8,"z":8,"csmetamict":13,"commentcrystal":8,"twinning":8,"tranglide":8,"parting":8,"epitaxidescription":8,"morphology":8,"tlform":8,"hmin":8,"hmax":8,"hardtype":8,"vhnmin":8,"vhnmax":8,"vhnerror":8,"vhng":8,"vhns":8,"commenthard":8,"dmeas":8,"dmeas2":8,"dcalc":8,"dmeaserror":8,"dcalcerror":8,"commentdense":8,"lustre":8,"lustretype":22,"commentluster":8,"diapheny":23,"streak":24,"colour":25,"commentcolor":8,"colors":26,"streak_colors":27,"luminescence":8,"uv":8,"cleavage":8,"cleavagetype":29,"fracturetype":30,"tenacity":31,"commentbreak":8,"opticaltype":8,"opticalsign":8,"opticalalpha":8,"opticalalpha2":8,"opticalalphaerror":8,"opticalbeta":8,"opticalbeta2":8,"opticalbetaerror":8,"opticalgamma":8,"opticalgamma2":8,"opticalgammaerror":8,"opticalomega":8,"opticalomega2":8,"opticalomegaerror":8,"opticalepsilon":8,"opticalepsilon2":8,"opticalepsilonerror":8,"opticaln":8,"opticaln2":8,"opticalnerror":8,"optical2vcalc":8,"optical2vcalc2":8,"optical2vcalcerror":8,"optical2vmeasured":8,"optical2vmeasured2":8,"optical2vmeasurederror":8,"rimin":8,"rimax":8,"opticaldispersion":8,"opticalpleochroism":8,"opticalpleochorismdesc":8,"opticalbirefringence":8,"opticalcomments":8,"opticalcolour":8,"opticalinternal":8,"opticaltropic":8,"opticalanisotropism":8,"opticalbireflectance":8,"opticalextinction":8,"opticalr":8,"specdispm":8,"ir":8,"electrical":8,"magnetism":8,"thermalbehaviour":8,"other":8,"industrial":8,"occurrence":8,"otheroccurrence":8,"type_specimen_store":8,"description_short":8,"aboutname":32,"rock_parent":8,"rock_parent2":8,"rock_root":33,"rock_bgs_code":8,"meteoritical_code":8,"updttime":34,"reviewed_at":8,"variety_of":35,"varieties":45,"group_members":46,"associates":47,"confused_with":48,"type_localities":49,"occurrence_total":50,"citations":51,"images":52,"structures":154,"synonyms":155,"language_names":156,"wikidata_qid":8,"texts":157},55642,"1:1:55642:6","b089148e-ccbd-48dc-8fcb-a73af2a3e01b","Magnomagnetite",null,2,"variety",2538,130,false,"(Fe,Mg)Fe\u003Csub>2\u003C\u002Fsub>O\u003Csub>4\u003C\u002Fsub>",[16,17,18],"Fe","Mg","O",[16,18],1935,"0","Metallic","Opaque","black or dark-grey","black",[25],[25,28],"gray","None Observed","Irregular\u002FUneven","brittle","Named in 1935 by A.K. Boldyrev according to composition.",0,"2025-08-11 12:15:24",{"id":11,"name":36,"entrytype":33,"csystem":37,"ima_formula":38,"mindat_formula":38,"hmin":39,"hmax":40,"dmeas":41,"dcalc":42,"strunz10ed1":43,"primary_image_id":44},"Magnetite","Isometric","Fe\u003Csup>2+\u003C\u002Fsup>Fe\u003Csup>3+\u003C\u002Fsup>\u003Csub>2\u003C\u002Fsub>O\u003Csub>4\u003C\u002Fsub>",5.5,6.5,"5.175","5.2","4",65576,[],[],[],[],[],4,[],[53,63,70,78,85,92,99,105,112,119,126,133,140,147],{"id":54,"source_url":55,"license_code":56,"credit_html":57,"title":58,"description":59,"author":60,"original_width":61,"original_height":62},65509,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=99288970","CC BY 2.0","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=99288970\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Spherulitic magnetite (Rudnogorsk Deposit, Angara-Ilim Iron Ore District, Irkutsk Region, Siberia, Russia) 6.jpg","Magnetite is Fe3O4, a moderately common iron oxide mineral and the # 2 iron ore mineral.  It has a metallic to submetallic luster, dark gray to black color and streak, a hardness of 6 on the Mohs Hardness Scale, has no cleavage, is moderately heavy for its size, and often forms octahedral crystals.  Magnetite is readily identified - a magnet will stick to it, hence the name.\n\u003Cp>Seen here is a remarkable specimen of spherulitic magnetite from an iron mine at Rudnogorsk, Siberia.  \"Spherulitic\" refers to the oolite-like, concentrically-layered, rounded to subrounded masses.  The Rudnogorsk Deposit is part of the Angara-Ilim Iron Ore District, a regional cluster of magnetite-rich, metasomatized breccia pipes of explosive volcanic origin.  The occurrence and geometry of magnetite bodies in the pipes is varied and complex.  Magnetite mineralization occurred during emplacement of the Siberian Traps - mafic intrusions both predate and cut the breccia pipes.  Siberian Traps rocks date to Permian-Triassic boundary times (~251 Ma).  The major ore minerals in the district are magnesium-bearing iron oxides: magnomagnetite (MgxFe1-xFe2O4) and magnesioferrite (MgFe2O4).  The light-colored material in this rock includes calcite, but 1 or more other nonmetalic minerals are also present.\n\u003C\u002Fp>\u003Cp>Locality: mine just west of the town of Rudnogorsk, Irkutsk Region, northwest of Lake Baikal, Siberia, Russia\n\u003C\u002Fp>\n\u003Chr>\n\u003Cp>Photo gallery of magnetite:\n\u003C\u002Fp>\nwww.mindat.org\u002Fgallery.php?min=2538","James St. John",2118,1731,{"id":64,"source_url":65,"license_code":56,"credit_html":66,"title":67,"description":59,"author":60,"original_width":68,"original_height":69},65640,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=99288972","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=99288972\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Spherulitic magnetite (Rudnogorsk Deposit, Angara-Ilim Iron Ore District, Irkutsk Region, Siberia, Russia) 5.jpg",2214,2250,{"id":71,"source_url":72,"license_code":56,"credit_html":73,"title":74,"description":75,"author":60,"original_width":76,"original_height":77},65510,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=99288973","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=99288973\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Spherulitic magnetite (Rudnogorsk Deposit, Angara-Ilim Iron Ore District, Irkutsk Region, Siberia, Russia) 7.jpg","Magnetite is Fe3O4, a moderately common iron oxide mineral and the # 2 iron ore mineral.  It has a metallic to submetallic luster, dark gray to black color and streak, a hardness of 6 on the Mohs Hardness Scale, has no cleavage, is moderately heavy for its size, and often forms octahedral crystals.  Magnetite is readily identified - a magnet will stick to it, hence the name.\n\u003Cp>Seen here is a remarkable specimen of spherulitic magnetite from an iron mine at Rudnogorsk, Siberia.  \"Spherulitic\" refers to the oolite-like, concentrically-layered, rounded to subrounded masses.  The Rudnogorsk Deposit is part of the Angara-Ilim Iron Ore District, a regional cluster of magnetite-rich, metasomatized breccia pipes of explosive volcanic origin.  The occurrence and geometry of magnetite bodies in the pipes is varied and complex.  Magnetite mineralization occurred during emplacement of the Siberian Traps - mafic intrusions both predate and cut the breccia pipes.  Siberian Traps rocks date to Permian-Triassic boundary times (~251 Ma).  The major ore minerals in the district are magnesium-bearing iron oxides: magnomagnetite (MgxFe1-xFe2O4) and magnesioferrite (MgFe2O4). The light-colored material in this rock includes calcite, but 1 or more other nonmetalic minerals are also present.\n\u003C\u002Fp>\u003Cp>Locality: mine just west of the town of Rudnogorsk, Irkutsk Region, northwest of Lake Baikal, Siberia, Russia\n\u003C\u002Fp>\n\u003Chr>\n\u003Cp>Photo gallery of magnetite:\n\u003C\u002Fp>\nwww.mindat.org\u002Fgallery.php?min=2538",1938,2102,{"id":79,"source_url":80,"license_code":56,"credit_html":81,"title":82,"description":59,"author":60,"original_width":83,"original_height":84},65641,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=99288974","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=99288974\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Spherulitic magnetite (Rudnogorsk Deposit, Angara-Ilim Iron Ore District, Irkutsk Region, Siberia, Russia) 4.jpg",2169,2008,{"id":86,"source_url":87,"license_code":56,"credit_html":88,"title":89,"description":59,"author":60,"original_width":90,"original_height":91},65642,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=99288975","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=99288975\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Spherulitic magnetite (Rudnogorsk Deposit, Angara-Ilim Iron Ore District, Irkutsk Region, Siberia, Russia) 2.jpg",2724,2031,{"id":93,"source_url":94,"license_code":56,"credit_html":95,"title":96,"description":59,"author":60,"original_width":97,"original_height":98},65511,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=99288976","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=99288976\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Spherulitic magnetite (Rudnogorsk Deposit, Angara-Ilim Iron Ore District, Irkutsk Region, Siberia, Russia) 3.jpg",2512,2318,{"id":100,"source_url":101,"license_code":56,"credit_html":102,"title":103,"description":59,"author":60,"original_width":104,"original_height":76},65512,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=99288978","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=99288978\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Spherulitic magnetite (Rudnogorsk Deposit, Angara-Ilim Iron Ore District, Irkutsk Region, Siberia, Russia) 1.jpg",2730,{"id":106,"source_url":107,"license_code":56,"credit_html":108,"title":109,"description":75,"author":60,"original_width":110,"original_height":111},65513,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=104409029","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=104409029\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Spherulitic magnetite (Rudnogorsk Deposit, Angara-Ilim Iron Ore District, Irkutsk Region, Siberia, Russia) 14.jpg",2048,1693,{"id":113,"source_url":114,"license_code":56,"credit_html":115,"title":116,"description":75,"author":60,"original_width":117,"original_height":118},65643,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=104409037","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=104409037\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Spherulitic magnetite (Rudnogorsk Deposit, Angara-Ilim Iron Ore District, Irkutsk Region, Siberia, Russia) 13.jpg",1960,2064,{"id":120,"source_url":121,"license_code":56,"credit_html":122,"title":123,"description":75,"author":60,"original_width":124,"original_height":125},65644,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=104409038","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=104409038\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Spherulitic magnetite (Rudnogorsk Deposit, Angara-Ilim Iron Ore District, Irkutsk Region, Siberia, Russia) 12.jpg",1832,2300,{"id":127,"source_url":128,"license_code":56,"credit_html":129,"title":130,"description":75,"author":60,"original_width":131,"original_height":132},65514,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=104409053","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=104409053\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Spherulitic magnetite (Rudnogorsk Deposit, Angara-Ilim Iron Ore District, Irkutsk Region, Siberia, Russia) 9.jpg",2330,1780,{"id":134,"source_url":135,"license_code":56,"credit_html":136,"title":137,"description":75,"author":60,"original_width":138,"original_height":139},65645,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=104409054","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=104409054\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Spherulitic magnetite (Rudnogorsk Deposit, Angara-Ilim Iron Ore District, Irkutsk Region, Siberia, Russia) 10.jpg",1511,2363,{"id":141,"source_url":142,"license_code":56,"credit_html":143,"title":144,"description":75,"author":60,"original_width":145,"original_height":146},65646,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=104409070","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=104409070\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Spherulitic magnetite (Rudnogorsk Deposit, Angara-Ilim Iron Ore District, Irkutsk Region, Siberia, Russia) 8.jpg",2219,1743,{"id":148,"source_url":149,"license_code":56,"credit_html":150,"title":151,"description":75,"author":60,"original_width":152,"original_height":153},65647,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=104409071","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=104409071\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Spherulitic magnetite (Rudnogorsk Deposit, Angara-Ilim Iron Ore District, Irkutsk Region, Siberia, Russia) 11.jpg",1551,2375,[],[],[],{"history":8,"applications":8}]