Restr:Gold_nugget_(placer_gold)_1_(17001285916).jpg
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Restr orin (1 165 × 920 piksel, ment ar restr : 1,47 Mio, seurt MIME : image/jpeg)
Tennet eo ar restr-mañ eus Wikimedia Commons ha gallout a ra bezañ implijet evit raktresoù all. Diskouezet eo deskrivadur he fajenn zeskrivañ amañ dindan. |
Diverradur
DeskrivadurGold nugget (placer gold) 1 (17001285916).jpg |
English: Gold nugget (placer gold) (12 mm across at the widest). The gold sample shown above is a natural nugget from a placer deposit.
Gold is a metal. Metallic, semimetallic (metalloid), and nonmetallic elements are known in their native state as minerals. 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. As of the year 2018, there are around 4500 named and described terrestrial 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. Elements are fundamental substances of matter - matter that is composed of the same types of atoms. At present, 118 elements are known (four of them are still unnamed). Of these, 98 occur naturally on Earth (hydrogen to californium). Gold is a native element in nature. To find a native element, it must be relatively non-reactive and there must be some concentration process. Most of these occur in rocks & minerals, although some occur in very small, trace amounts. Only some elements occur in their native elemental state as minerals. Gold is very rare in crustal rocks - it averages about 5 ppb (parts per billion). Where gold has been concentrated, it occurs as wires, dendritic crystals, twisted sheets, octahedral crystals, and variably-shaped nuggets. It most commonly occurs in hydrothermal quartz veins, disseminated in some contact- & hydrothermal-metamorphic rocks, and in placer deposits. Placers are concentrations of heavy minerals in stream gravels or in cracks on bedrock-floored streams. Gold has a high specific gravity (about 19), so it easily accumulates in placer deposits. Its high density allows prospectors to readily collect placer gold by panning. Gold (Au) is the most prestigious metal known, but it's not the most valuable. Gold is the only metal that has a deep, rich, metallic yellow color. |
Deiziad | |
Mammenn | https://www.flickr.com/photos/jsjgeology/17001285916/ (James St. John @ flikr) |
Aozer | James St. John |
Aotre-implijout
- Gallout a rit :
- eskemm – eilañ, skignañ ha treuzkas an oberenn-mañ
- kemmañ – azasaat an oberenn-mañ
- diouzh ma heuilhit kement-mañ :
- deroadenn – Rankout a rit reiñ an titouroù perc'henniezh rekis diwar-benn an aozer, pourchas ul liamm war-zu an aotre-implijout ha merkañ hag-eñ ez eus bet graet kemmoù. Gallout a rit en ober en un doare reizh met hep lakaat da grediñ ez oc'h bet aprouet gantañ pe ez eo aprouet gantañ implij an oberenn-mañ.
This image was originally posted to Flickr by jsj1771 at https://www.flickr.com/photos/47445767@N05/17001285916. It was reviewed on 6 Ebrel 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
6 Ebrel 2015
Riferimento (Reference)
www-acc.esa.int European Space Agency 2018
Items portrayed in this file
diskouez a ra
gold nugget saozneg
some value
4 Ebr 2015
Istor ar restr
Klikañ war un deiziad/eur da welet ar restr evel ma oa da neuze.
Deiziad/Eur | Munud | Mentoù | Implijer | Notenn | |
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red | 6 Ebr 2015 da 20:34 | 1 165 × 920 (1,47 Mio) | Jacopo Werther | Transferred from Flickr via Flickr2Commons |
Implij ar restr
Implijout a ra ar bajenn da heul ar restr-mañ :
Implij hollek ar restr
Ober a ra ar wikioù da-heul gant ar restr-mañ :
- Implij war az.wikipedia.org
- Implij war bn.wiktionary.org
- Implij war en.wikipedia.org
- Implij war en.wiktionary.org
- алтан
- минерал
- туус
- সোনা
- Reconstruction:Proto-Turkic/tiāĺ
- зарни
- көмүс
- тимир
- Reconstruction:Proto-Turkic/kümüĺ
- Reconstruction:Proto-Turkic/altun
- таас
- Reconstruction:Proto-Turkic/kömür
- آلتون
- Reconstruction:Proto-Turkic/temür
- Reconstruction:Proto-Turkic/bakïr
- Template:table:minerals/trk-pro
- Reconstruction:Proto-Turkic/korguĺčïn
- Template:table:minerals/sah
- үрүҥ көмүс
- кыһыл көмүс
- миэл
- көмөр
- сибиниэс
- Template:table:minerals/sla-pro
- Reconstruction:Proto-Turkic/tūŕ
- Reconstruction:Proto-Turkic/tūč
- Implij war es.wikibooks.org
- Implij war fr.wikipedia.org
- Discussion:Or
- Modèle:Infobox Élément/Or
- Or
- Wikipédia:Statistiques des anecdotes de la page d'accueil/Visibilité des anecdotes (2021)
- Discussion:Or/LSV 20114
- Wikipédia:Statistiques des anecdotes de la page d'accueil/Visibilité des anecdotes (2021)/2021 05
- Projet:Aide et accueil/Twitter/Tweets/archives/mai 2021
- Wikipédia:Le saviez-vous ?/Archives/2021
- Implij war gcr.wikipedia.org
- Implij war incubator.wikimedia.org
- Implij war it.wiktionary.org
- Implij war kk.wikipedia.org
- Implij war mg.wiktionary.org
- Implij war oc.wikipedia.org
- Implij war pt.wikipedia.org
- Implij war rw.wikipedia.org
- Implij war sg.wiktionary.org
- Implij war shy.wiktionary.org
Gwelet muioc'h eus implij hollek ar restr-mañ.
Metaroadennoù
Titouroù ouzhpenn zo er restr-mañ; bet lakaet moarvat gant ar c'hamera niverel pe ar skanner implijet evit he niverelaat. Mard eo bet cheñchet ar skeudenn e-keñver he stad orin marteze ne vo ket kenkoulz munudoù zo e-keñver ar skeudenn kemmet.
Ledander | 1 295 px |
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Hed | 1 028 px |
Niv. a vitoù dre barzhioù |
|
Kenaozadur piksel | RGB |
Tuadur | Boutin |
Niver a standilhonoù | 3 |
Pizhder led ar skeudenn | 2 400 dpi |
Pizhder hed ar skeudenn | 2 400 dpi |
Meziant bet implijet | Adobe Photoshop Elements 13.0 (Macintosh) |
Deiziad hag eur kemm restr | 4 Ebr 2015 da 02:25 |
Stumm exif | 2.21 |
Lec'h al livioù | sRGB |
ID nemetañ an teul orin | 9808BE25A53B4821973177025700A53C |
Deiziad hag eur an niverelaat | 3 Ebr 2015 da 22:21 |
Deiziad ma voe kemmet ar metaroadennoù da ziwezhañ | 3 Ebr 2015 da 22:25 |