[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:494657":3},{"id":4,"longid":5,"guid":6,"name":7,"shortcode_ima":8,"entrytype":9,"entrytype_text":10,"varietyof":6,"synid":6,"polytypeof":6,"groupid":11,"weighting":12,"nolocadd":13,"blacklisted":13,"mindat_formula":14,"mindat_formula_note":6,"ima_formula":6,"elements":15,"sigelements":20,"key_elements":21,"impurities":6,"cim":6,"ima_status":22,"ima_notes":6,"ima_history":6,"approval_year":6,"publication_year":6,"discovery_year":6,"strunz10ed1":24,"strunz10ed2":25,"strunz10ed3":25,"strunz10ed4":26,"dana8ed1":6,"dana8ed2":6,"dana8ed3":6,"dana8ed4":6,"csystem":27,"cclass":28,"spacegroup":29,"spacegroupset":30,"a":31,"b":32,"c":33,"alpha":6,"beta":34,"gamma":6,"aerror":35,"berror":36,"cerror":35,"alphaerror":6,"betaerror":37,"gammaerror":6,"va3":6,"z":35,"csmetamict":13,"commentcrystal":6,"twinning":6,"tranglide":6,"parting":6,"epitaxidescription":6,"morphology":6,"tlform":38,"hmin":28,"hmax":39,"hardtype":6,"vhnmin":40,"vhnmax":6,"vhnerror":6,"vhng":41,"vhns":6,"commenthard":6,"dmeas":6,"dmeas2":6,"dcalc":42,"dmeaserror":6,"dcalcerror":6,"commentdense":6,"lustre":6,"lustretype":43,"commentluster":6,"diapheny":44,"streak":45,"colour":46,"commentcolor":6,"colors":47,"streak_colors":49,"luminescence":6,"uv":50,"cleavage":51,"cleavagetype":52,"fracturetype":53,"tenacity":54,"commentbreak":6,"opticaltype":6,"opticalsign":6,"opticalalpha":6,"opticalalpha2":6,"opticalalphaerror":6,"opticalbeta":6,"opticalbeta2":6,"opticalbetaerror":6,"opticalgamma":6,"opticalgamma2":6,"opticalgammaerror":6,"opticalomega":6,"opticalomega2":6,"opticalomegaerror":6,"opticalepsilon":6,"opticalepsilon2":6,"opticalepsilonerror":6,"opticaln":6,"opticaln2":6,"opticalnerror":6,"optical2vcalc":6,"optical2vcalc2":6,"optical2vcalcerror":6,"optical2vmeasured":6,"optical2vmeasured2":6,"optical2vmeasurederror":6,"rimin":6,"rimax":6,"opticaldispersion":6,"opticalpleochroism":6,"opticalpleochorismdesc":6,"opticalbirefringence":6,"opticalcomments":6,"opticalcolour":55,"opticalinternal":6,"opticaltropic":56,"opticalanisotropism":57,"opticalbireflectance":6,"opticalextinction":6,"opticalr":58,"specdispm":6,"ir":6,"electrical":6,"magnetism":59,"thermalbehaviour":6,"other":6,"industrial":6,"occurrence":60,"otheroccurrence":6,"type_specimen_store":61,"description_short":6,"aboutname":62,"rock_parent":6,"rock_parent2":6,"rock_root":9,"rock_bgs_code":6,"meteoritical_code":6,"updttime":63,"reviewed_at":6,"variety_of":6,"varieties":64,"group_members":65,"associates":79,"confused_with":80,"type_localities":83,"occurrence_total":37,"citations":90,"images":99,"structures":110,"synonyms":111,"language_names":114,"wikidata_qid":123,"texts":124},494657,"1:1:494657:7",null,"Hopmannite","Hpn",0,"mineral",494675,6,false,"Ba\u003Csub>2\u003C\u002Fsub>(Ti\u003Csub>5\u003C\u002Fsub>Fe)O\u003Csub>13\u003C\u002Fsub>",[16,17,18,19],"Ba","Fe","Ti","O",[16,17,18,19],[16,18],[23],"APPROVED","4","C","25","Monoclinic",5,11,"C2\u002Fm ","15.357","3.8500","9.129","99.03",2,7,1,"thin platy crystals",5.5,"632",25,"4.15","Sub-Metallic","Opaque","gray","black to dark-grey",[48,45],"black",[45],"none","along (100)","Perfect","Irregular\u002FUneven","brittle","black to darkgrey","Anisotropic","weak","(14.0,14.5) 470,\r\n(13.8,13.9) 546,\r\n(13.3,13.5) 589,\r\n(13.1,13.3) 650","Non-Magnetic","A newly discovered xenolith, measuring approximately\r\n70×50×30 cm3, consists of a few multi-coloured zones\r\ncharacterised by variable mineral associations.\r\nHopmannite was identified in the dark-grey zones of this\r\nxenolith, alongside characteristic irregular milky aggregates of Ca-bearing hydrosilicates","Type material is deposited in the collections of the Natural History Museum Mainz, State Collection of Natural History of Rhineland-Palatinate, Reichklarastr. 10, D-55116 Mainz, Germany, catalogue number M_2025\u002F862","The name hopmannite is given in honour of Dr Michael Hopmann (1874-1962), a monk from Maria Laach monastery, a mineral collector, and one of the best experts on volcanism in the Eifel region at that time, who also specialized in the wider field of geology, especially in petrography and soil science. His research work and numerous scientific papers earned him the reputation of the best Laach volcanic region expert. In 1949, at the age of 75, he was given a teaching position at the Institute of Mineralogy at the University of Bonn, where he lectured on the topic of \"Regional Petrography of the Eifel Mountains.\" Ten years later, the Institute honoured him with a ceremonial colloquium when the Federal President awarded him the Grand Cross of the Order of Merit. Among the inhabitants of the Eifel districts, who also valued him as a pastor, he soon became known as \"Dr Stein\" (Dr Stone) or \"der Steinepater\" (father of stones).\r\nIt was certainly impressive for outsiders to see him striding across the harvested fields in autumn, dressed in his monk's robe and with his head bowed, always on the lookout for volcanic ejecta.","2026-05-21 07:56:15",[],[66,74],{"id":67,"name":68,"entrytype":9,"csystem":27,"ima_formula":69,"mindat_formula":70,"hmin":28,"hmax":12,"dmeas":71,"dcalc":72,"primary_image_id":73},2089,"Jeppeite","(K,Ba)\u003Csub>2\u003C\u002Fsub>(Ti,Fe\u003Csup>3+\u003C\u002Fsup>)\u003Csub>6\u003C\u002Fsub>O\u003Csub>13\u003C\u002Fsub>","K\u003Csub>2\u003C\u002Fsub>Ti\u003Csub>6\u003C\u002Fsub>O\u003Csub>13\u003C\u002Fsub>","3.94","3.972",12588,{"id":75,"name":76,"entrytype":9,"csystem":27,"ima_formula":77,"mindat_formula":77,"hmin":28,"hmax":12,"dmeas":6,"dcalc":78,"primary_image_id":6},53410,"Nixonite","Na\u003Csub>2\u003C\u002Fsub>Ti\u003Csub>6\u003C\u002Fsub>O\u003Csub>13\u003C\u002Fsub>","3.51",[],[81,82],{"id":67,"name":68,"entrytype":9,"csystem":27,"ima_formula":69,"mindat_formula":70,"hmin":28,"hmax":12,"dmeas":71,"dcalc":72,"primary_image_id":73},{"id":75,"name":76,"entrytype":9,"csystem":27,"ima_formula":77,"mindat_formula":77,"hmin":28,"hmax":12,"dmeas":6,"dcalc":78,"primary_image_id":6},[84],{"id":85,"txt":86,"latitude":87,"longitude":88,"country":89},459314,"Xenolith CS-090 (Hopmannite type locality), Seekante, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany",50.3330556,7.2491667,"Germany",[91,94],{"id":92,"year":6,"html":93,"doi":6},18981449,"Juroszek, R., Krüger, B., Cametti, G., Marciniak-Maliszewska, B. and Schäfer, C. (2025) Hopmannite, IMA 2025-034. CNMNC Newsletter 87, Mineralogical Magazine, 89, https:\u002F\u002Fdoi.org\u002F......",{"id":95,"year":96,"html":97,"doi":98},19635561,2025,"Juroszek, Rafał; Krüger, Biljana; Cametti, Georgia; Marciniak-Maliszewska, Beata; Schäfer, Christof (2025) Hopmannite, Ba2(Ti5Fe)O13, a new hexatitanate from the Bellerberg volcano, Germany. \u003Ci>Mineralogy and Petrology\u003C\u002Fi>,  120 (1). 227-240 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1007\u002Fs00710-025-00959-5'>doi:10.1007\u002Fs00710-025-00959-5\u003C\u002Fa>","10.1007\u002Fs00710-025-00959-5",[100],{"id":101,"source_url":102,"license_code":103,"credit_html":104,"title":105,"description":106,"author":107,"original_width":108,"original_height":109},9416,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=191596615","CC BY 4.0","Juroszek, Rafał; Krüger, Biljana; Cametti, Georgia; Marciniak-Maliszewska, Beata; Schäfer, Christof, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=191596615\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Optical image of hopmannite.png","Fig. 2 (a) Optical image of hopmannite and associated minerals within the holotype xenolith specimen.  Abbreviations: Aeg  –  aegirine; Ca-Si-OH – Ca-bearing hydrosilicates;  Di –  diopside; Fno – fresnoite; Hem  – hematite;  Hpn –  hopmannite; Lct – leucite; Prv – perovskite","Juroszek, Rafał; Krüger, Biljana; Cametti, Georgia; Marciniak-Maliszewska, Beata; Schäfer, Christof",1612,1492,[],[112,113],"Hopmanniet","IMA2025-034",[115,119],{"lang":116,"names":117},"ca",[118],"hopmannita",{"lang":120,"names":121},"de",[122],"Hopmannit","Q136487857",{"history":6,"applications":6}]