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{{Infobox mineral
[[Berkas:ObsidianOregon.jpg|jmpl|ka|200px|Obsidian dari [[Oregon]].]]
| name = Obsidian
| category = [[Batuan vulkanik]]
| boxwidth =
| boxbgcolor = #222222
| image = ObsidianOregon.jpg
| imagesize =
| caption = Obsidian yang ditemukan di Oregon
| formula =
| molweight =
| color = Hitam pekat atau hitam kehijauan
| habit =
| system =
| twinning =
| cleavage =
| fracture = Konkoidal
| tenacity =
| mohs = 5–6<ref name="moorey1999">{{cite book |author=Peter Roger Stuart Moorey |title=Ancient mesopotamian materials and industries: the archaeological evidence |url=https://books.google.com/books?id=P_Ixuott4doC&pg=PA108 |year=1999 |publisher=Eisenbrauns |isbn=978-1-57506-042-2 |pages=108–}}</ref>
| luster = Kekacaan
| polish =
| other = Tekstur: halus, seperti kaca
| refractive =
| opticalprop = Translusen
| birefringence =
| dispersion =
| pleochroism =
| fluorescence =
| absorption =
| streak =
| gravity = sekitar 2,4<ref name="usgs1981">{{cite book |author=Geological Survey (U.S.) |title=Geological Survey (U.S.) |url=https://books.google.com/books?id=hQglAQAAIAAJ&pg=PA185 |year=1981 |publisher=The Survey |pages=185–}}</ref>
| density =
| melt =
| fusibility =
| diagnostic =
| solubility =
| diaphaneity =
| references = <ref name="mindat">{{cite web |url=https://www.mindat.org/min-8519.html |title=Obsidian: Mineral information, data and localities. |website=mindat.org}}</ref>
}}
 
'''Obsidian''' adalah kaca vulkanik alami yang berupa batuan beku ekstrusif.<ref name="rafferty2011">{{cite book |last=Rafferty |first=John P. |date=Agustus 2011 |title=Rocks |publisher=The Rosen Publishing Group |page=97– |isbn=978-1-61530-492-9}}</ref><ref name="isciensei">I-science I' 2006 Ed. Rex Bookstore, Inc. pp. 127–. {{ISBN|978-971-23-4399-5}}.</ref> Obsidian terbentuk dari ekstrusi [[lava]] [[felsik]] yang mendingin dengan cepat tanpa pertumbuhan kristal.
'''Obsidian''' adalah batu apung
 
ObsidianKaca terbentukvulkanik dariini ekstrusidimanfaatkan [[lava]]sebagai alat pemotong pada zaman dahulu dan [[felsikpisau bedah]] yangpada mendinginzaman denganmodern.<ref>{{cite cepatbook tanpa|author1=Brian pertumbuhanCotterell kristal.|author2=Johan KacaKamminga vulkanik|title=Mechanics iniof dimanfaatkanpre-industrial sebagaitechnology: [[titikan proyektil]]introduction atauto pedangthe padamechanics zamanof kuno,ancient danand [[skalpel]]traditional operasimaterial padaculture zaman|year=1992 modern|publisher=Cambridge University Press |isbn=978-0-521-42871-2 |pages=127– |url=https://books.google.com/books?id=0-xOM8y6Uc8C&pg=PA127}}</ref>[<ref>{{cite book |author=David Wescott |date=1999 |title=Primitive Technology: A Book of Earth Skills |url=http://books.google.com.au/books?id=HlwUo0IccoMC&pg=PT90&lpg=PT90&dq=obsidian+surgical+scalpel&source=web&ots=tO8nfz3GFt&sig=7rQSy1-tT3-mm_Pp7nhyxOXjyTc&hl=en#PPT90,M1 Primitive Technology: A Book of Earth Skills] David Wescott }}</ref><ref>[http://www.finescience.com/commerce/ccc1065-obsidian-scalpels.htm Supplier of modern obsidian surgical scalpels with information on use]</ref> Obsidian juga memiliki fungsi ornamental dan sebagai [[batu permata]].<ref>{{Cite book |last=Manutchehr-Danai |first=Mohsen |date=9 Maret 2013 |title=Dictionary of Gems and Gemology |publisher=Springer Science & Business Media |isbn=9783662042885 |language=en |url=https://books.google.com/?id=2UX1CAAAQBAJ&pg=PA502&dq=%C2%A0Obsidian+is+also+used+for+ornamental+purposes+and+as+a+gemstone.#v=onepage&q=%C2%A0Obsidian%20is%20also%20used%20for%20ornamental%20purposes%20and%20as%20a%20gemstone.&f=false}}</ref>
 
== Referensi ==
Baris 9 ⟶ 46:
 
== Pranala luar ==
{{commons}}
* {{en}} [http://www.mindat.org/min-8519.html Mindat with location data]
* {{en}} [http://mineral.galleries.com/minerals/mineralo/obsidian/obsidian.htm Obsidian: Mineral galleries]
* {{en}} [http://volcanoes.usgs.gov/images/pglossary/obsidian.php USGS Obsidian photo glossary]
 
{{perhiasan}}
{{Gununggunung berapi}}
 
[[Kategori:Batuan beku]]
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