[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:31316":3},{"id":4,"longid":5,"guid":6,"name":7,"shortcode_ima":8,"entrytype":9,"entrytype_text":10,"varietyof":8,"synid":8,"polytypeof":8,"groupid":8,"weighting":11,"nolocadd":12,"blacklisted":13,"mindat_formula":8,"mindat_formula_note":8,"ima_formula":8,"elements":8,"sigelements":8,"key_elements":8,"impurities":8,"cim":8,"ima_status":8,"ima_notes":8,"ima_history":8,"approval_year":8,"publication_year":8,"discovery_year":8,"strunz10ed1":14,"strunz10ed2":14,"strunz10ed3":14,"strunz10ed4":8,"dana8ed1":8,"dana8ed2":8,"dana8ed3":8,"dana8ed4":8,"csystem":8,"cclass":8,"spacegroup":8,"spacegroupset":14,"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":12,"commentcrystal":8,"twinning":8,"tranglide":8,"parting":8,"epitaxidescription":8,"morphology":8,"tlform":8,"hmin":8,"hmax":8,"hardtype":8,"vhnmin":14,"vhnmax":14,"vhnerror":8,"vhng":8,"vhns":8,"commenthard":8,"dmeas":14,"dmeas2":14,"dcalc":14,"dmeaserror":8,"dcalcerror":8,"commentdense":8,"lustre":8,"lustretype":8,"commentluster":8,"diapheny":8,"streak":8,"colour":8,"commentcolor":8,"colors":8,"streak_colors":8,"luminescence":8,"uv":8,"cleavage":8,"cleavagetype":8,"fracturetype":8,"tenacity":8,"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":15,"rock_parent":8,"rock_parent2":8,"rock_root":9,"rock_bgs_code":8,"meteoritical_code":8,"updttime":16,"reviewed_at":8,"variety_of":8,"varieties":17,"group_members":23,"associates":24,"confused_with":25,"type_localities":26,"occurrence_total":27,"citations":28,"images":50,"structures":257,"synonyms":258,"language_names":260,"wikidata_qid":8,"texts":261},31316,"1:1:31316:8","9d09391f-c12d-470c-ba81-8931bd45d46e","Thunder Egg",null,0,"mineral",908,false,true,"0","\"Native American legend reportedly considers the rocks to be the eggs of the thunderbirds which occupied Mount Hood and Mount Jefferson. Thunder Spirits on the mountains hurled the \"eggs\" at each other.\" (Wikipedia)","2026-05-15 19:02:36",[18],{"id":19,"name":20,"entrytype":21,"csystem":8,"ima_formula":8,"mindat_formula":8,"hmin":8,"hmax":8,"dmeas":8,"dcalc":8,"primary_image_id":22},470619,"Schneekopfkugel",2,78480,[],[],[],[],21,[29,33,37,41,45],{"id":30,"year":31,"html":32,"doi":8},16136372,2005,"en.wikipedia.org (n.d.) \u003Ca target='_blank' rel='nofollow' href='https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FThunderegg'>https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FThunderegg\u003C\u002Fa>",{"id":34,"year":35,"html":36,"doi":8},17575880,2010,"Colburn, Robert (2010) \u003Ci>The Formation of Thundereggs (Lithophysae)\u003C\u002Fi>. Kasper Jasper Press.",{"id":38,"year":39,"html":40,"doi":8},17188061,2013,"Crosby, Dave (2013) Reading Thundereggs. \u003Ca target='_blank' rel='nofollow' href='https:\u002F\u002Fwww.mindat.org\u002Farticle.php\u002F1675\u002FReading+Thundereggs'>https:\u002F\u002Fwww.mindat.org\u002Farticle.php\u002F1675\u002FReading+Thundereggs\u003C\u002Fa>",{"id":42,"year":39,"html":43,"doi":44},3794322,"Breitkreuz, Christoph (2013) Spherulites and lithophysae—200 years of investigation on high-temperature crystallization domains in silica-rich volcanic rocks. \u003Ci>Bulletin of Volcanology\u003C\u002Fi>, 75 (4).  \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1007\u002Fs00445-013-0705-6'>doi:10.1007\u002Fs00445-013-0705-6\u003C\u002Fa>","10.1007\u002Fs00445-013-0705-6",{"id":46,"year":47,"html":48,"doi":49},32055,2020,"Hanson, Sarah L. (2020) Word to the Wise: Spherulites and Lithophysae. \u003Ci>Rocks & Minerals\u003C\u002Fi>,  95 (2) 183-187 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1080\u002F00357529.2019.1641031'>doi:10.1080\u002F00357529.2019.1641031\u003C\u002Fa>","10.1080\u002F00357529.2019.1641031",[51,59,69,77,87,96,103,110,120,127,135,143,151,160,168,177,186,194,200,210,218,226,234,243,249],{"id":52,"source_url":53,"license_code":54,"credit_html":55,"title":56,"description":8,"author":8,"original_width":57,"original_height":58},82819,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=2770568","Public domain","Unknown author, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=2770568\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Thunderegg.jpg",640,423,{"id":60,"source_url":61,"license_code":62,"credit_html":63,"title":64,"description":65,"author":66,"original_width":67,"original_height":68},82820,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=3681155","CC BY 3.0","David Rix Eibonvale, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=3681155\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Black rock desert thunderegg.JPG","A fine thunderegg from the Black Rock Desert in Nevada","David Rix Eibonvale",750,562,{"id":70,"source_url":71,"license_code":62,"credit_html":72,"title":73,"description":74,"author":66,"original_width":75,"original_height":76},82821,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=3681164","David Rix Eibonvale, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=3681164\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Gehlberg Geode.JPG","a thunderegg geode from Gehlberg, Germany",800,600,{"id":78,"source_url":79,"license_code":80,"credit_html":81,"title":82,"description":83,"author":84,"original_width":85,"original_height":86},74689,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=32652082","CC BY-SA 3.0","峠 武宏, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=32652082\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Oregon001.jpg","Richardson Ranch Thunder Egg with Plume from Plume Beds, Richardson Ranch, Madras, Oregon, U.S.A.","峠 武宏",4704,3136,{"id":88,"source_url":89,"license_code":90,"credit_html":91,"title":92,"description":93,"author":94,"original_width":75,"original_height":95},82834,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=98106306","CC BY-SA 4.0","DaveC1, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=98106306\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","1.2-2014-02-29MarDaveGeodes 001cb.jpg","A partially \"blown\" spheroid pair in obsidian showing much of the original structure and the areas ruptured by steam.","DaveC1",725,{"id":97,"source_url":98,"license_code":90,"credit_html":99,"title":100,"description":101,"author":94,"original_width":102,"original_height":75},82835,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=98318579","DaveC1, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=98318579\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","1.1-6Jun13-Drum-Oil 008.jpg","\"blown\" spheroids transformed to a lithophysae.",698,{"id":104,"source_url":105,"license_code":90,"credit_html":106,"title":107,"description":108,"author":94,"original_width":76,"original_height":109},51086,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=98318976","DaveC1, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=98318976\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","02inside2.jpg","\"Blown\" spheroid transformed to a lithophysa.",433,{"id":111,"source_url":112,"license_code":113,"credit_html":114,"title":115,"description":116,"author":117,"original_width":118,"original_height":119},24164,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=82974794","CC BY 2.0","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=82974794\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Thunder Egg Agate (Priday Blue Bed, John Day Formation, Miocene; near Madras, Oregon, USA) 1 (32744937906).jpg","\u003Cp>Agate (\"Thunder Egg\") from the Tertiary of Oregon, USA.\n\u003C\u002Fp>\u003Cp>\"Agate\" is a rockhound\u002Fcollector term for cavities in rocks (usually sedimentary rocks such as limestone or igneous rocks such as basalt) that have been partially or completely filled with irregularly concentric layers of microcrystalline, fibrous quartz (chalcedony - SiO2).  Agate is quartz.\n\u003C\u002Fp>\u003Cp>\"Thunder eggs\" are agate-filled masses that fill former cavities in volcanic rocks (see Colburn, 2004 for more info.).\n\u003C\u002Fp>\u003Cp>Stratigraphy: Priday Blue Bed, John Day Formation, Miocene\n\u003C\u002Fp>\u003Cp>Locality: Richardson Ranch (Richardson's Rock Ranch), northeast of the town of Madras, Jefferson County, north-central Oregon, USA\n\u003C\u002Fp>\n\u003Chr>\n\u003Cp>Reference cited:\n\u003C\u002Fp>\nColburn (2004) - The Formation of Thundereggs (Lithophysae).  493 pp. (<a href=\"\u003Ca rel=\"nofollow\" class=\"external free\" href=\"http:\u002F\u002Fwww.cvmineralclub.org\u002FMAIN\u002FPages\u002FMembers\">http:\u002F\u002Fwww.cvmineralclub.org\u002FMAIN\u002FPages\u002FMembers\u003C\u002Fa> Articles\u002FJack Marcy\u002FThe Formation of Thundereggs-Revised 2004.pdf\" rel=\"nofollow\">www.cvmineralclub.org\u002FMAIN\u002FPages\u002FMembers%20Articles\u002FJack%...<\u002Fa>) (This long document may take a little while to load on your computer.)","James St. John",3020,2992,{"id":121,"source_url":122,"license_code":113,"credit_html":123,"title":124,"description":116,"author":117,"original_width":125,"original_height":126},24165,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=82974867","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=82974867\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Thunder Egg Agate (Priday Blue Bed, John Day Formation, Miocene; near Madras, Oregon, USA) 2 (34416129410).jpg",2389,2412,{"id":128,"source_url":129,"license_code":113,"credit_html":130,"title":131,"description":132,"author":117,"original_width":133,"original_height":134},24166,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=84622586","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=84622586\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Thunder egg quartz (Laton Point, south of Buchanan, Oregon, USA) (32785493225).jpg","\u003Cp>Quartz (\"Thunder Egg\") from the Tertiary of Oregon, USA.\n\u003C\u002Fp>\u003Cp>\"Thunder eggs\" are agate- and\u002For quartz-filled masses that fill former cavities in volcanic rocks (see Colburn, 2004 for more info.).\n\u003C\u002Fp>\u003Cp>Locality: Laton Point, south of Buchanan, northeastern Harney County, eastern Oregon, USA\n\u003C\u002Fp>\n\u003Chr>\n\u003Cp>Reference cited:\n\u003C\u002Fp>\nColburn (2004) - The Formation of Thundereggs (Lithophysae).  493 pp. (<a href=\"\u003Ca rel=\"nofollow\" class=\"external free\" href=\"http:\u002F\u002Fwww.cvmineralclub.org\u002FMAIN\u002FPages\u002FMembers\">http:\u002F\u002Fwww.cvmineralclub.org\u002FMAIN\u002FPages\u002FMembers\u003C\u002Fa> Articles\u002FJack Marcy\u002FThe Formation of Thundereggs-Revised 2004.pdf\" rel=\"nofollow\">www.cvmineralclub.org\u002FMAIN\u002FPages\u002FMembers%20Articles\u002FJack%...<\u002Fa>) (This long document may take a little while to load on your computer.)",2240,2612,{"id":136,"source_url":137,"license_code":113,"credit_html":138,"title":139,"description":140,"author":117,"original_width":141,"original_height":142},24167,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=84622668","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=84622668\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Thunder egg quartz (Baker Ranch Agate Mine, Luna County, New Mexico, USA) (34346707651).jpg","\u003Cp>Quartz (\"Thunder Egg\") from New Mexico, USA.\n\u003C\u002Fp>\u003Cp>A mineral is a naturally-occurring, solid, inorganic, crystalline substance having a fairly definite chemical composition and having fairly definite physical properties.  At its simplest, a mineral is a naturally-occurring solid chemical.  Currently, there are over 5100 named and described minerals - about 200 of them are common and about 20 of them are very common.  Mineral classification is based on anion chemistry.  Major categories of minerals are: elements, sulfides, oxides, halides, carbonates, sulfates, phosphates, and silicates.\n\u003C\u002Fp>\u003Cp>The silicates are the most abundant and chemically complex group of minerals.  All silicates have silica as the basis for their chemistry.  \"Silica\" refers to SiO2 chemistry.  The fundamental molecular unit of silica is one small silicon atom surrounded by four large oxygen atoms in the shape of a triangular pyramid - this is the silica tetrahedron - SiO4.  Each oxygen atom is shared by two silicon atoms, so only half of the four oxygens \"belong\" to each silicon.  The resulting formula for silica is thus SiO2, not SiO4.\n\u003C\u002Fp>\u003Cp>The simplest & most abundant silicate mineral in the Earth's crust is quartz (SiO2).  All other silicates have silica + impurities.  Many silicates have a significant percentage of aluminum (the aluminosilicates).\n\u003C\u002Fp>\u003Cp>Quartz (silicon dioxide\u002Fsilica - SiO2) is the most common mineral in the Earth's crust.  It is composed of the two most abundant elements in the crust - oxygen and silicon.  It has a glassy, nonmetallic luster, is commonly clearish to whitish to grayish in color, has a white streak, is quite hard (H≡7), forms hexagonal crystals, has no cleavage, and has conchoidal fracture.  Quartz can be any color: clear, white, gray, black, brown, pink, red, purple, blue, green, orange, etc.\n\u003C\u002Fp>\u003Cp>The quartz specimen shown above is a \"thunder egg\", which refers to agate- and\u002For quartz-filled masses that fill former cavities in rocks.\n\u003C\u002Fp>\u003Cp>Locality: Baker Mine (Baker Ranch Agate Mine), Luna County, southwestern New Mexico, USA\n\u003C\u002Fp>\n\u003Chr>\n\u003Cp>Photo gallery of quartz and amethyst\n\u003C\u002Fp>\n<a href=\"\u003Ca rel=\"nofollow\" class=\"external free\" href=\"http:\u002F\u002Fwww.mindat.org\u002Fgallery.php?min=3337\">http:\u002F\u002Fwww.mindat.org\u002Fgallery.php?min=3337\u003C\u002Fa>\" rel=\"nofollow\">www.mindat.org\u002Fgallery.php?min=3337<\u002Fa>",2654,2462,{"id":144,"source_url":145,"license_code":113,"credit_html":146,"title":147,"description":148,"author":117,"original_width":149,"original_height":150},24168,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=110930860","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=110930860\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Thunder Egg Agate (Priday Blue Bed, John Day Formation, Miocene; near Madras, Oregon, USA) 5.jpg","Agate (\"Thunder Egg\") from the Tertiary of Oregon, USA. (9.2 centimeters across at its widest)\n\u003Cp>\"Agate\" is a rockhound\u002Fcollector term for cavities in rocks (usually sedimentary rocks such as limestone or igneous rocks such as basalt) that have been partially or completely filled with irregularly concentric layers of microcrystalline, fibrous quartz (chalcedony - SiO2).  Agate is quartz.\n\u003C\u002Fp>\u003Cp>\"Thunder eggs\" are agate-filled masses that fill former cavities in volcanic rocks (see Colburn, 2004 for more info.).\n\u003C\u002Fp>\u003Cp>Stratigraphy: unrecorded (but probably the Priday Blue Bed, John Day Formation, Miocene)\n\u003C\u002Fp>\u003Cp>Locality: unrecorded site in Oregon, USA (but probably Richardson Ranch \u002F Richardson's Rock Ranch, northeast of the town of Madras, Jefferson County, north-central Oregon)\n\u003C\u002Fp>\n\u003Chr>\n\u003Cp>Reference cited:\n\u003C\u002Fp>\nColburn (2004) - The Formation of Thundereggs (Lithophysae).  493 pp.",4406,3591,{"id":152,"source_url":153,"license_code":80,"credit_html":154,"title":155,"description":156,"author":157,"original_width":158,"original_height":159},82822,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=15985531","Przykuta, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=15985531\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Muzeum Złota w Złotoryi agat z Nowego Kościoła 21.07.2011 p.jpg","Agat ze wsi Nowy Kościół w Muzeum Złota w Złotoryi","Przykuta",1644,1428,{"id":161,"source_url":162,"license_code":113,"credit_html":163,"title":164,"description":165,"author":117,"original_width":166,"original_height":167},24169,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=111293921","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=111293921\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Thunder Egg Agate (Priday Blue Bed, John Day Formation, Miocene; near Madras, Oregon, USA) 6.jpg","Agate (\"Thunder Egg\") from the Tertiary of Oregon, USA. (cut & polished surface; 9.9 centimeters across at its widest)\n\u003Cp>\"Agate\" is a rockhound\u002Fcollector term for cavities in rocks (usually sedimentary rocks such as limestone or igneous rocks such as basalt) that have been partially or completely filled with irregularly concentric layers of microcrystalline, fibrous quartz (chalcedony - SiO2).  Agate is quartz.\n\u003C\u002Fp>\u003Cp>\"Thunder eggs\" are agate-filled masses that fill former cavities in volcanic rocks (see Colburn, 2004 for more info.).  The agate in this specimen has formed subtle, thin, horizontal laminations.  The original \"down\" direction due to gravity is evident - such features are called geopetal structures.\n\u003C\u002Fp>\u003Cp>Stratigraphy: unrecorded (but probably the Priday Blue Bed, John Day Formation, Miocene)\n\u003C\u002Fp>\u003Cp>Locality: unrecorded site in Oregon, USA (but probably Richardson Ranch \u002F Richardson's Rock Ranch, northeast of the town of Madras, Jefferson County, north-central Oregon)\n\u003C\u002Fp>\n\u003Chr>\n\u003Cp>Reference cited:\n\u003C\u002Fp>\nColburn (2004) - The Formation of Thundereggs (Lithophysae).  493 pp.",4622,3746,{"id":169,"source_url":170,"license_code":80,"credit_html":171,"title":172,"description":173,"author":174,"original_width":175,"original_height":176},74096,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=20523505","Chris857, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=20523505\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Bruneau Jasper from Idaho Thundereggs.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FPicture_jasper\" class=\"extiw\" title=\"w:Picture jasper\">Picture jasper\u003C\u002Fa> from \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBruneau,_Idaho\" class=\"extiw\" title=\"w:Bruneau, Idaho\">Bruneau, Idaho\u003C\u002Fa>. Held in the \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FA._E._Seaman_Mineral_Museum\" class=\"extiw\" title=\"w:A. E. Seaman Mineral Museum\">A. E. Seaman Mineral Museum\u003C\u002Fa>. This jasper is from inside local thundereggs","Chris857",2822,2107,{"id":178,"source_url":179,"license_code":80,"credit_html":180,"title":181,"description":182,"author":183,"original_width":184,"original_height":185},82823,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=21137851","Mariuszjbie, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=21137851\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Agat, wrocław.jpg","Agate from Nowy Kościół","Mariuszjbie",1989,1785,{"id":187,"source_url":188,"license_code":80,"credit_html":189,"title":190,"description":191,"author":192,"original_width":193,"original_height":75},82824,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=24623477","Lech Darski, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=24623477\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Buchanan Thunderegg, Oregon, USA.jpg","Agat – Rancho Buchanan, Oregon. USA.","Lech Darski",1200,{"id":195,"source_url":196,"license_code":80,"credit_html":197,"title":198,"description":199,"author":84,"original_width":85,"original_height":86},82825,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=32651666","峠 武宏, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=32651666\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Newmexico004.jpg","Baker mine thunderegg from Baker Ranch, near Deming, southwest of New Mexico, U.S.A.",{"id":201,"source_url":202,"license_code":203,"credit_html":204,"title":205,"description":206,"author":207,"original_width":208,"original_height":209},82827,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=64269972","CC0 1.0","Daderot, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=64269972\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Agate - Naturhistorisches Museum Nürnberg - Nuremberg, Germany - DSC04187.jpg","Exhibit in the Naturhistorisches Museum Nürnberg - Nuremberg, Germany.","Daderot",3648,4705,{"id":211,"source_url":212,"license_code":90,"credit_html":213,"title":214,"description":215,"author":192,"original_width":216,"original_height":217},82828,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=68093670","Lech Darski, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=68093670\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Agat Thunderegg x 2 - Richardson Ranch (Priday Ranch), Madras, Jefferson Co.jpg","Agat Thunderegg x 2 - Richardson Ranch (Priday Ranch), Madras, Jefferson Co.",4526,3017,{"id":219,"source_url":220,"license_code":113,"credit_html":221,"title":222,"description":223,"author":117,"original_width":224,"original_height":225},67635,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=82974756","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=82974756\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Agate (Nowy Kosicol, Poland) (31912720284).jpg","\u003Cp>Agate from Poland. (Jerry Schaber collection)\n\u003C\u002Fp>\n\"Agate\" is a rockhound\u002Fcollector term for irregularly- & concentrically-layered masses of microcrystalline quartz.  Individual layers consist of translucent or opaque, microcrystalline, fibrous quartz called chalcedony.  Impurities in different layers cause variations in color.  Many agate masses are simply geodes that have completely filled up with quartz.  Common agate colors are clearish-whitish-grayish, brownish-red, and yellowish-brown.  Commercial agates that occur in greens and blues and purples are almost always dyed (faked).",2386,1959,{"id":227,"source_url":228,"license_code":113,"credit_html":229,"title":230,"description":231,"author":117,"original_width":232,"original_height":233},82829,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=82974878","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=82974878\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Agate nodule (Succor Creek Claim, Harney County, Oregon, USA) (34670752811).jpg","\u003Cp>Agate nodule (\"Thunder Egg\") from Oregon, USA.\n\u003C\u002Fp>\u003Cp>\"Agate\" is a rockhound\u002Fcollector term for cavities in rocks (usually sedimentary rocks such as limestone or igneous rocks such as basalt) that have been partially or completely filled with irregularly concentric layers of microcrystalline, fibrous quartz (chalcedony - SiO2).  Agate is quartz.\n\u003C\u002Fp>\u003Cp>\"Thunder eggs\" are agate-filled masses that fill former cavities in rocks (see Colburn, 2004 for more info.).\n\u003C\u002Fp>\u003Cp>Locality: Succor Creek Claim, Harney County, Oregon, USA\n\u003C\u002Fp>\n\u003Chr>\n\u003Cp>Reference cited:\n\u003C\u002Fp>\nColburn (2004) - The Formation of Thundereggs (Lithophysae).  493 pp. (<a href=\"\u003Ca rel=\"nofollow\" class=\"external free\" href=\"http:\u002F\u002Fwww.cvmineralclub.org\u002FMAIN\u002FPages\u002FMembers\">http:\u002F\u002Fwww.cvmineralclub.org\u002FMAIN\u002FPages\u002FMembers\u003C\u002Fa> Articles\u002FJack Marcy\u002FThe Formation of Thundereggs-Revised 2004.pdf\" rel=\"nofollow\">www.cvmineralclub.org\u002FMAIN\u002FPages\u002FMembers%20Articles\u002FJack%...<\u002Fa>) (This long document may take a little while to load on your computer.)",3387,2144,{"id":235,"source_url":236,"license_code":90,"credit_html":237,"title":238,"description":239,"author":240,"original_width":241,"original_height":242},82830,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=84817844","Hannes Grobe, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=84817844\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Achat-geschiebe hg.jpg","Agate in Rhyolithe","Hannes Grobe",2134,2330,{"id":244,"source_url":245,"license_code":80,"credit_html":246,"title":247,"description":191,"author":192,"original_width":248,"original_height":76},82831,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=88536485","Lech Darski, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=88536485\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Detail, Buchanan Thunderegg, Oregon, USA (cropped).jpg",486,{"id":250,"source_url":251,"license_code":113,"credit_html":252,"title":253,"description":254,"author":117,"original_width":255,"original_height":256},82832,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=88547437","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=88547437\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Detail, Quartz-agate nodule (Killer Green Claim, Ochoco Mountains, Prineville, Oregon, USA) (33993292453) (cropped).jpg","\u003Cp>Quartz-agate nodule (\"Thunder Egg\") from Oregon, USA.\n\u003C\u002Fp>\u003Cp>\"Agate\" is a rockhound\u002Fcollector term for cavities in rocks (usually sedimentary rocks such as limestone or igneous rocks such as basalt) that have been partially or completely filled with irregularly concentric layers of microcrystalline, fibrous quartz (chalcedony - SiO2).  Agate is quartz.\n\u003C\u002Fp>\u003Cp>\"Thunder eggs\" are agate-filled masses that fill former cavities in rocks (see Colburn, 2004 for more info.).\n\u003C\u002Fp>\u003Cp>Locality: Killer Green Claim, near Prineville, Ochoco Mountains, central Oregon, USA)\n\u003C\u002Fp>\n\u003Chr>\n\u003Cp>Reference cited:\n\u003C\u002Fp>\nColburn (2004) - The Formation of Thundereggs (Lithophysae).  493 pp. (<a href=\"\u003Ca rel=\"nofollow\" class=\"external free\" href=\"http:\u002F\u002Fwww.cvmineralclub.org\u002FMAIN\u002FPages\u002FMembers\">http:\u002F\u002Fwww.cvmineralclub.org\u002FMAIN\u002FPages\u002FMembers\u003C\u002Fa> Articles\u002FJack Marcy\u002FThe Formation of Thundereggs-Revised 2004.pdf\" rel=\"nofollow\">www.cvmineralclub.org\u002FMAIN\u002FPages\u002FMembers%20Articles\u002FJack%...<\u002Fa>) (This long document may take a little while to load on your computer.)",1332,1067,[],[259],"Thunderegg",[],{"history":8,"applications":8}]