{"id":9930,"date":"2018-02-08T17:36:43","date_gmt":"2018-02-08T16:36:43","guid":{"rendered":"http:\/\/karmaka.de\/?page_id=9930"},"modified":"2018-02-08T18:18:03","modified_gmt":"2018-02-08T17:18:03","slug":"ardon-2","status":"publish","type":"page","link":"https:\/\/karmaka.de\/?page_id=9930","title":{"rendered":"Ard\u00f3n"},"content":{"rendered":"
<\/div>\n

ARD\u00d3N<\/span><\/strong><\/p>\n

<\/div>\n

Fall (L6, S3, W0) in Ard\u00f3n, Castilla y Le\u00f3n, Spain at ~ 9:30 a.m. local time on 9 July 1931 <\/span><\/p>\n

<\/div>\n

Rosa Gonz\u00e1lez P\u00e9rez and the secret stone of her childhood<\/span><\/p>\n

<\/div>\n

<\/div>\n
\n
\"\"<\/a>

The uncut Ard\u00f3n meteorite (5.48 g). Photo: Jos\u00e9 Antonio Gonz\u00e1lez<\/p><\/div>\n

<\/div>\n

\n
\"The<\/a>

The uncut Ard\u00f3n meteorite (5.48 g). Photo: Jos\u00e9 Antonio Gonz\u00e1lez<\/p><\/div>\n

<\/div>\n

\n
\"\"<\/a>

The uncut Ard\u00f3n meteorite (5.48 g). Photo: Jos\u00e9 Antonio Gonz\u00e1lez<\/p><\/div>\n

<\/div>\n

<\/div>\n
\"The<\/a>

The fall location in Ard\u00f3n<\/p><\/div>\n

It happened on the 9th of July 1931 at about 9.30 in the morning (local time) in a slightly sloping street in front of the wooden gate of the two-storey house with the number 9 in the Calle del Morrillo in the village Ard\u00f3n (42\u00b026’10.74″N, 5\u00b033’42.58″W<\/a>), which is situated about 18 km to the south of L\u00e9on in Spain. 11-year old Rosa Gonz\u00e1lez was told by her mother to take the lunch to her uncle Gregorio who was working in a wine cellar. It is said to have been an unusual day. Thunder rolling could be heard in the sky and an<\/p>\n

\"Rosa<\/a>

Rosa Gonz\u00e1lez P\u00e9rez in 2014<\/p><\/div>\n

unusually dark dust trail was noticeable, most likely in northeastern direction. According to Rosa Gonz\u00e1lez it did not sound like a typical thunder rolling. She herself describes it as: \u201cHac\u00eda \u2018pas, pas\u2019 y desped\u00eda como humo\u201d. Furthermore she believes she heard a sound \u201ccomo de un avi\u00f3n\u201d, that sounded like an airplane. Having walked about 200 meters from her home Rosa apparently found shelter under a projecting roof covering the pavement to wait \u201cque se pas\u00f3\u201d until it would be over.Then she continued her walk and suddenly heard a clattering noise behind her on the street. She turned around and saw a little black stone on the street next to the kerb. First she thought someone had thrown the stone at her but could not see anybody. She picked up the 5.48-gram oval stone that was about 23 mm long and 16 mm broad and noticed that it was too hot to play with. She believed the stone could have been ejected from one of the chimneys of one of the houses around but could not see any in use. First she wanted to leave the stone behind but her curiosity made her keep the stone whose metal grains glittered temptingly inside the meteorite’s light grey matrix revealed by a small ‘window’ in the fusion crust. Rosa went to the wine cellar in which her uncle was working and showed him the stone, which according to Rosa was still so warm that she had to cool her hands at a bottle of wine to be able to hold the stone in her hand.<\/p>\n

\"The<\/a>

Most likely the exact fall location in the Calle del Morrillo.<\/p><\/div>\n

\"The<\/a>

Most likely the exact fall location in the Calle del Morrillo.<\/p><\/div>\n

Back at home in Calle el Cueto 21 (25) she showed the stone to her aunt and her mother who were said to have been impressed by it but were incapable of telling her what kind of stone it was. \u201cWho do you think would throw a stone at you?\u201d, they asked. Later neighbours were told about the stone. The next day priest Don Pedro came to visit the family and when he saw the stone he told Rosa that it had to be a meteorite. He said he had heard about the meteor on the radio. The dust trail in the sky had come from the \u2018fire\u2019 that one could have seen as a flame in the sky if it had happened during the night. Rosa put the stone in a little box in which it was stored together with old medallions and broken necklaces until about 2009 .<\/p>\n

Already about three decades ago Rosa told her nephew Jos\u00e9 Antonio Gonz\u00e1lez about the story of her find. In 2013 Jos\u00e9 remembered the story because of what he had seen about meteorites in TV documentaries, among which were probably images of the Chelyabinsk meteorite. He thought that Rosa’s stone could be scientifically important. That is why he contacted Josep Maria Trigo and sent photos of the specimen.<\/p>\n

In press reports from 1931 the bolide above L\u00e9on was described by eye-witnesses as follows:
\nAccording to a teacher the bolide passed with a \u201ctableteo fuerte seguido de seis u ocho truenos empalmados\u201d, a rattling or clacking with six or eight subsequent thunderclaps. Others described the bolide high in the sky as \u201cuna llama ardiendo y rugiendo y echando humo\u201d, a burning, roaring and smoking flame.<\/p>\n

\"A<\/a>

A B C VIERNES, EDICI\u00d3N DE LA MA\u00d1ANA, page 42 (July 10, 1931) \/ Image: hemeroteca.abc.es<\/p><\/div>\n

On July 10, 1931 the following short message was published in the left column of page 42 in the newspaper A B C VIERNES, EDICI\u00d3N DE LA MA\u00d1ANA: “La caida de un aerolito – Le\u00f3n 9, 12 ma\u00f1ana. Ayer se sinti\u00f3 en esta ciudad un ruido extra\u00f1o, que, al parecer, obedeci\u00f3 a la ca\u00edda de un aerolito. En algunos pueblos, como Bo\u00f1ar y Cisticrna, se registr\u00f3 un ligero temblor de tierra, y en la estaci\u00f3n de la \u00faltima localidad se agrictaron las paredes.”<\/p>\n

On April 10, 2014 the Spanish National Research Council (CSIC) published a press release<\/a> about the meteorite. On the same day Rosa Gonz\u00e1les was interviewed live via phone in the morning show La ma\u00f1ana<\/em> on channel TVE-La 1 at 11.47 am. On July 26 abstract number 5068 \u201cARD\u00d3N: A LONG HIDDEN L6 CHONDRITE FALL\u201d is published online to go with Dr Josep M. Trigo-Rodr\u00edguez\u2019s (Grup sobre Meteorits, C\u00f3ssos Menors i Ci\u00e8ncies Planet\u00e0ries de l’ICE ) talk at the 77th Annual Meteoritical Society Meeting in Casablanca (Marruecos) ( 2014 ). On August 13, 2014 the article \u201cThe Ard\u00f3n L6 ordinary chondrite: A long-hidden Spanish meteorite fall.\u201d By Trigo-Rodr\u00edguez, J. M., Llorca, J., Weyrauch, M., Bischoff, A., Moyano-Cambero, C. E., Keil, K., Laubenstein, M., Pack, A., Madiedo, J. M., Alonso-Azc\u00e1rate, J., Riebe, M., Wieler, R., Ott, U., Tapia, M. and Mestres, N. was published in Meteoritics & Planetary Science, 49: 1475\u20131484. doi: 10.1111\/maps.12344.<\/p>\n

More than one gram of the meteorite was donated to the Museo Nacional de Ciencias Naturales. A fragment of 0.3 grams will be on public display in the meteorite room of the Museo Nacional de Ciencias Naturales. In addition, there will be a replica of the whole meteorite. The remaining mass of 3.528 grams was returned to the Gonz\u00e1les family who considers giving the specimen to another museum possibly in Ard\u00f3n or Le\u00f3n.
\n

<\/div>\nScientific literature<\/strong><\/span>
\n
<\/div>\nThe Ard\u00f3n L6 ordinary chondrite: A long-hidden Spanish meteorite fall<\/strong><\/span><\/p>\n

Trigo-Rodr\u00edguez, J. M., Llorca, J., Weyrauch, M., Bischoff, A., Moyano-Cambero, C. E., Keil, K., Laubenstein, M., Pack, A., Madiedo, J. M., Alonso-Azc\u00e1rate, J., Riebe, M., Wieler, R., Ott, U., Tapia, M. and Mestres, N.<\/p>\n

Meteoritics & Planetary Science
\n49, Nr 8, 1475\u20131484 (2014)
\nDOI: 10.1111\/maps.12344<\/p>\n

PDF LINK (full text)<\/strong><\/a> or LINK (full text)<\/strong><\/a><\/p>\n

\n
\n
Abstract We report and describe an L6 ordinary chondrite fall that occurred in Ard\u00f3n, Le\u00f3n province, Spain (longitude 5.5605\u00b0W, latitude 42.4364\u00b0N) on July 9th, 1931. The 5.5 g single stone was kept hidden for 83 yr by Rosa Gonz\u00e1lez P\u00e9rez, at the time an 11 yr old who had observed the fall and had recovered the meteorite. According to various newspaper reports, the event was widely observed in Northern Spain. Ard\u00f3n is a very well-preserved, fresh, strongly metamorphosed (petrologic type 6), and weakly shocked (S3) ordinary chondrite with well-equilibrated and recrystallized minerals. The mineral compositions (olivine Fa23.7\u00b10.3, low-Ca pyroxene Fs20.4\u00b10.2Wo1.5\u00b10.2, plagioclase An10.3\u00b10.5Ab84.3\u00b11.2), magnetic susceptibility (log \u03c7 = 4.95 \u00b1 0.05 \u00d7 10\u22129 m3 kg\u22121), bulk density (3.49 \u00b1 0.05 g cm\u22123), grain density (3.58 \u00b1 0.05 g cm\u22123), and porosity (2.5 vol%) are typical for L6 chondrites. Short-lived radionuclides confirm that the meteorite constitutes a recent fall. The 21Ne and 38Ar cosmic ray exposure ages are both about 20\u201330 Ma, similar to values for many other L chondrites. The cosmogenic 22Ne\/21Ne ratio indicates that preatmospheric Ard\u00f3n was a relatively large body. The fact that the meteorite was hidden in private hands for 83 yr makes one wonder if other meteorite falls may have experienced the same fate, thus possibly explaining the anomalously low number of falls reported in continental Spain in the 20th century.<\/div><\/div><\/div>\n<\/div>\n<\/div>\n

Ard\u00f3n – La inesperada recuperaci\u00f3n de un meteorito ca\u00eddo en 1931<\/span><\/strong><\/p>\n

Carles E. Moyano Cambero , Josep M. Trigo Rodr\u00edguez , Jordi Llorca<\/p>\n

Astronomia, diciembre 2014 | n\u00ba186, pp. 23-29<\/p>\n

PDF (full text)<\/strong><\/a>
\n

<\/div>\nMEDIA<\/strong><\/span>
\n
<\/div>\nRADIO<\/strong><\/p>\n

Radio Televisi\u00f3n Espa\u00f1ola (RTVE) – Radio 5 actualidad – 83 a\u00f1os con un meteorito (10 April 2014)<\/p>\n

Interview with Dr Josep M. Trigo-Rodr\u00edguez<\/p>\n\nhttp:\/\/www.rtve.es\/resources\/TE_SR5VENT\/mp3\/5\/4\/1397140146245.mp3<\/a><\/audio>\n

<\/div>\nNEWSPAPER<\/strong><\/p>\n

Diario de Le\u00f3n (8 April 2014)
\nPROVINCIA – DEL PUEBLO AL CIELO Un meteorito llamado Ard\u00f3n
\nDiario de Le\u00f3n (8 April 2014)<\/strong><\/a><\/p>\n

Diario de Le\u00f3n (10 April 2014)
\nPROVINCIA – LA HISTORIA DEL METEORITO LLAMADO ARD\u00d3N
\n“El 9 de julio de 1931, a las 9.30, una enorme bola de fuego sobrevol\u00f3 la provincia de Le\u00f3n”<\/p>\n

Diario de Le\u00f3n (10 April 2014)<\/strong><\/a><\/p>\n

Diario de Le\u00f3n (11 April 2014)
\nPROVINCIA \u00abAquello que viste, Rosa, ese humo en el cielo, era fuego\u00bb
\nDiario de Le\u00f3n (11 April 2014)<\/strong><\/a><\/p>\n

Diario de Le\u00f3n (11 April 2014)
\nPROVINCIA – LA HISTORIA DEL METEORITO LLAMADO ARD\u00d3N
\nArd\u00f3n viaj\u00f3 por el Sistema Solar durante 26 millones de a\u00f1os antes de llegar a la Tierra<\/p>\n

Diario de Le\u00f3n (11 April 2014)<\/strong><\/a><\/p>\n

ABC, Castilla y Le\u00f3n (11 April 2014)<\/p>\n

ABC, Castilla y Le\u00f3n (11 April 2014)<\/strong><\/a><\/p>\n

El PA\u00cdS (10 April 2014)<\/p>\n

El PA\u00cdS (10 April 2014)<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

ARD\u00d3N Fall (L6, S3, W0) in Ard\u00f3n, Castilla y Le\u00f3n, Spain at ~ 9:30 a.m. local time on 9 July 1931 Rosa Gonz\u00e1lez P\u00e9rez and the secret stone of her childhood It happened on the…<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":64,"menu_order":18,"comment_status":"closed","ping_status":"closed","template":"page-template-wide.php","meta":{"footnotes":""},"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/pages\/9930"}],"collection":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9930"}],"version-history":[{"count":79,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/pages\/9930\/revisions"}],"predecessor-version":[{"id":14258,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/pages\/9930\/revisions\/14258"}],"up":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/pages\/64"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9930"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}