Glass

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Mount Shadwell, Mortlake, Moyne Shire, Victoria, Australia
© Judy Rowe

System:	Amorphous	Hardness:	5 - 6½
Name:	From the Celtic word glas (bluish-green)

An amorphous, homogeneous material with a random liquid-like structure generally formed due to rapid cooling.
Glasses can be natural (such as obsidian) or artificial (e.g., in slags). Artificial glasses are predominantly composed of silica with a few impurities.

Crystals in igneous rocks may contain tiny inclusions of frozen melt, i.e., glass.

Classification of Glass

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Physical Properties of Glass

Lustre:

Vitreous

Diaphaneity (Transparency):

Transparent, Translucent, Opaque

Hardness (Mohs):

5 - 6½

Hardness Data:

Measured

Fracture:

Conchoidal

Crystallography of Glass

Crystal System:

Amorphous

Optical Data of Glass

Type:

Isotropic

Other Names for Glass

Varieties:

Andara

Mt. St. Helens Stone

Other Information

Health Warning:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

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Specimens:

The following Glass specimens are currently listed for sale on minfind.com.

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Localities for Glass

The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the

symbol to view information about a locality. The

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(TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.


Algeria
Annaba Province Cap de Fer Aïn Nousri volcano	Eur. J. Mineral. , 1996, 8, pp. 625-638.
Skikda Province Collo Cape Bougaroun Kef Cheraya	Eur. J. Mineral. , 1996, 8, pp. 625-638.
Tamanghasset Province Ahaggar Mts (Hoggar Mts) Atakor volcanic massif Adriane volcano	M. Girod, Bull. Soc. Franç. Minéral. Crist. , 1963, LXXXVI, pp. 121-125.
Akar-Akar volcano	M. Girod, Bull. Soc. Franç. Minéral. Crist. , 1963, LXXXVI, pp. 121-125.

Antarctica
Eastern Antarctica Queen Maud Land (Dronning Maud Land) Queen Fabiola Mts (Yamato Mts) Yamato-793274 lunar meteorite	Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 44
Western Antarctica Marie Byrd Land Executive Committee Range Mount Sidley	R.H. Grapes et al. , Min. Mag. , August 2003, Vol. 67, N°4, pp. 639-651.

Atlantic Ocean
Mid-Atlantic Ridge complex FAMOUS dive area	G. K. Czamanske and J.G. Moore, Geological Society of America Bulletin, Vol. 88, N° 4, pp. 587-599.
Reykjanes Ridge	G. K. Czamanske and J.G. Moore, Geological Society of America Bulletin, Vol. 88, N° 4, pp. 587-599.

Australia
Queensland Charters Towers Region South Gregory Tenham Station Tenham meteorite	Zhidong Xie et al. , Lunar and Planetary Science XXXVI (2005), 1216.pdf
South Australia Leigh Creek Leigh Creek coal mine	Baker, G. (1953): Transactions of the Royal Society of South Australia, 76, 1-20.
Olary Province Weekeroo Station Weekeroo Station meteorite	Bunch, T.E., Keil, K., and Olsen, E. (1970): Contributions to Mineralogy and Petrology 25, 297-340.
Victoria Moyne Shire Mortlake Mount Shadwell	Birch, W. D., Wood, A., White, A. J. R., Mills, S. J. and Freeman, R. (2008): Aegirine-augite crystals in scoria from Mt Shadwell and Mt Anakie, Victoria, Australia. Australian Journal of Mineralogy 14, 37-42.

Austria
Tyrol North Tyrol Ötz valley Umhausen Köfels	Eur. J. Mineral. , 1993, 5, pp. 893-902.

Azerbaijan
Naxçıvan (Naxcivan; Nakhichevan) District Shusha Indarch meteorite (Elizabethpol; Gindorcha; Glindorcha; Indarh; Indarkh; Schuscha; Suscha [NHM cat.])	http://rruff.geo.arizona.edu/doclib/hom/roedderite.pdf.

Brazil
Goiás Amorinópolis Amorinópolis Complex	http://iavcei2004.free.cl/abstracts/Brod_ibxobhffgsxhpfgphnspm.doc.

Central African Republic
Lobaye Prefecture Lobaye River (Bali River) Bali Meteorite	Hoinkes, G., and Kurat, G. (1979): Meteoritics 14, 423.

Chile
Antofagasta Region El Loa Province San Pedro volcano Gabbroic xenolites	C. Lemanski, Jr. (re-entry of lost Mindat data).

China
Anhui Province Bozhou Prefecture Qiaocheng District Xiaoyanzhuang Boxian meteorite	Kuiren Wang (1987): Geochimica 16(3)
Guangdong Province Shaoguan Prefecture Wengyuan Co. Yanzhuang meteorite	M. Chen and X. Xie, Eur. J. Mineral. , 1996, 8, pp. 325-333.
Heilongjiang Province (Manchuria; Dongbei Region) Heihe Prefecture Wudalianchi Co. Wudalianchi volcanic cluster Huoshao hill (Huoshaoshan)	Ming Zhang (1984): Earth Science, Journal of China University of Geosciences 28(1)
Laohei hill (Laoheishan)	Ming Zhang (1984): Earth Science, Journal of China University of Geosciences 28(1)
Jilin Province (Manchuria; Dongbei Region) Jilin Prefecture Jilin City Jilin meteorite (Jilin H5 chondrite)	Wankang Huang, Yingwen Xie, and Jingming Pan (1978): Geochimica 7(1), 25-34
Shandong Province Weifang Prefecture Changle Co. Wutu Sapphire deposit	Ping Wang and Guochang Li (1996): Mineral Resources and Geology 16(4); Qiu Zhili, Wu Fuyuan, Yu Qingyuan, Xie Liewen, and Yang Shufeng (2005): Chinese Science Bulletin 50(22), 2602-2611
Yunnan Province Dali Autonomous Prefecture Heqing Co. Liuhe village	Xianfan Liu, Xinzhi Zhan, Zhenmin Gao, Jiajun Liu, Chaoyang Li, and Wenchao Su (2000): Journal of Geodynamics 29(1-2), 141-147

Democratic Republic of Congo (Zaïre)
Kivu Goma Mt Nyiragongo	Bull. Soc. Franç. Minéralo. Cristallo. , 1974, 97, p. 497.

France
Auvergne Puy-de-Dôme Châtelguyon Charbonnières-les-Varennes Puy Gonnard	C. Lemanski, Jr. (re-entry of lost Mindat data).
Centre Cher Sancerre-Couy drilling Lamprophyre dyke	Eur. J. Mineral. , 1993, 5, pp. 85-96.
Languedoc-Roussillon Gard Trèves Mas Aubert La Pierre Plantée pass	R.C. Maury and P. Picot : "Conditions d'Apparition du Fer Natif dans une Enclave de Schistes Graphiteux d'une Basanite des Cévennes", Bulletin de Minéralogie, 1979, Vol. 102, N° 4, 326-332
Midi-Pyrénées Aveyron Saint-Beauzély Azinières	Bull. Soc. Franç. Minéralo. Cristallo. , 1974, 97, pp. 465-469.
Provence-Alpes-Côte d'Azur Bouches-du-Rhône Aix-en-Provence Peyrolles-en-Provence Durance alluvial deposits	Y. Moëlo : "Compte-rendu de la réunion "Systématique des Minéraux" du 23 novembre 1989", Bull. Soc. Franç. Minéral.

Germany
Bavaria Swabia Nördlingen Ries Crater	G.R. Osinski et al. , Meteoritics and Planetary Science, V 39, Issue 10, Oct. 2004.

Hungary
Nógrád Co. Karancs-Medves Mts. Bárna Nagy-kő	C. Szabó et al. , Eur. J. Mineral. , 1996, 8, pp. 881-899.
Salgótarján Pécs-kő	EGU / EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #748 "Silicate melt inclusions in olivine phenocrysts from Hegyestu (Bakony-Balaton Highland) and Pecsko alkaline basalts (Nograd-Gomor), Hungary"
Veszprém Co. Balaton Uplands Zánka Hegyestű	XVI ECROFI European Current Research On Fluid Inclusions, Porto 2001, Abstracts (Eds F. Noronha, A. Dória and A. Guedes), Faculdade de Ciências do Porto, Departamento de Geologia, Memória nº 7, pp. 237-240. Porto, 2001

India
Jharkhand Hazaribagh District Bokaro coalfield

Italy
Basilicata Potenza Province Monte Vulture Carbonatite lapilli	F. Stoppa and Y. Liu, Eur. J. Mineral. , 1995, 7, pp. 391-402.
Foidite outcrop	F. Stoppa and Y. Liu, Eur. J. Mineral. , 1995, 7, pp. 391-402.
Phonolite-tephrite outcrop	F. Stoppa and Y. Liu, Eur. J. Mineral. , 1995, 7, pp. 391-402.
Tephrite outcrop	F. Stoppa and Y. Liu, Eur. J. Mineral. , 1995, 7, pp. 391-402.
Latium Rieti Province Rieti Santa Rufina Cupaello Quarry	F. Stoppa and Y. Liu, Eur. J. Mineral. , 1995, 7, pp. 391-402.
Sicily Catania Province Northern Iblean plateau Palagonia	C. Lemanski, Jr. (re-entry of lost Mindat data).
Umbria Perugia Province Spoleto Colle Fabbri	Stoppa.F., Wolley A.R. and Bailey K. (2004). Extrusive carbonatites and their meaning: the case of Italy. 32nd International Geological Congress, Florence - Italy, August 20-28, 2004, pag. 7-8. L. Terrazzi Ed., Firenze, 2004
Terni Province Marsciano San Venanzo Vispi Quarry (incl. Celli; Pian di Celle)	V. V. Sharygin et al. , Eur. J. Mineral. , 1996, 8, pp. 1199-1212.; F. Stoppa and Y. Liu, Eur. J. Mineral. , 1995, 7, pp. 391-402.
Orvieto Titignano	F. Stoppa and Y. Liu, Eur. J. Mineral. , 1995, 7, pp. 391-402.
Veneto Padova Province Euganei Hills Faedo Fasolo Mount	Passaglia E. and Taglavini A. (1995): Erionite from Faedo, Colli Euganei, Italy. N.Jb.Miner.Mh.,4, pagg.185-191.

Japan
Honshu Island Chugoku region Shimane Prefecture Hamada City Ohgusoyama	Masaru Yamaguchi (1964) Petrogenic Significance of Ultrabasic Inclusions in Basaltic Rocks from Southwest Japan. Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 15, #1, 163-219.
Kyushu Region Fukuoka Prefecture Fukuoka City Kurose	Masaru Yamaguchi (1964) Petrogenic Significance of Ultrabasic Inclusions in Basaltic Rocks from Southwest Japan. Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 15, #1, 163-219.
Saga Prefecture Karatsu City (Higashi-Matsuura-gun) Takashima islet	Masaru Yamaguchi (1964) Petrogenic Significance of Ultrabasic Inclusions in Basaltic Rocks from Southwest Japan. Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 15, #1, 163-219.
Tokyo Prefecture Izu Archipelago Miyake Island (Miyake-jima)	Alfredo Petrov specimens

Jordan
Safawi Jabal Aritayn	Eur. J. Mineral. , 1995, 7, pp. 1129-1135.
Jabal Hannoun	Eur. J. Mineral. , 1995, 7, pp. 1129-1135.
Tell Rimah	Eur. J. Mineral. , 1995, 7, pp. 1129-1135.

Kazakhstan
Aktobe Province (Aqtöbe Oblysy; Aktubinskaya Oblast') Zhamanshin meteor crater	Rob Lavinsky (ex. Howard Belsky specimen - irghisite meteorite impact glass)

Kenya
Rift Valley Province Hell’s Gate National Park Olkaria volcano	Mineralogical Magazine, August 1998, V. 62, N° 4, pp. 477-486. / Journal of Petrology, Vol. 42, N° 4, pp. 825-845, 2001. / Mineralogical Magazine, Volume 66, Number 2, 1 April 2002, pp. 287-299(13) / The United Nations University, GEOTHERMAL TRAINING PROGRAMME Reports 2004, Number 1, Orkustofnun, Grensásvegur 9, IS-108 Reykjavík, Iceland

New Caledonia
Northern Province Nouméa Commune Népoui Boninite outcrop	T. Sameshima et al. , Am. Min. , 1983, 68, pp. 1076-1082. / C. Campiglio et al. , Bull. Minéral. , 1986, 109, pp. 423-440.

Nigeria
Katsina State Zagami Martian meteorite	Zhidong Xie et al. , Lunar and Planetary Science XXXVI (2005), 1216.pdf

Oman
Dhofar (Al Janubiyah) Province Dhofar 922 meteorite	D.D. Badjukov et al. , Lunar and Planetary Science, XXXVI (2005), 1684.pdf
Dhofar 925 Lunar meteorite	The Meteoritical Bulletin, No. 88, 2004 JULY, Meteoritics & Planetary Science 39, Axxx–Axxx (2004)

Pacific Ocean
East Pacific Rise EPR 12° 50' N	R. Hekinian et al. , Bull. Minéral. , 1985, 108, pp. 691-698.
EPR 7°S-23°S	Magnetite Olivine Pyroxene Plagioclase Glass Chalcedony Quartz Opaline “allophane” Kaolinite Chlorite Calcite Smectite Illite pyrite Sphalerite Chalcopyrite marcasite Wurtzite Covellite Goethite
Sea of Japan Honshu Island borderland Sado ridge	Markov, Y.D., Mozherovskii, A.V., Derkachev, A.N., Barinov, N.N., and Sereda, N.A. (2002): Lithology and Mineral Resources 37(2), 121-129.
South California Borderland Ben Seamount	Hein, J.R., Reid, J.A., Conrad, T.A., Dunham, R.E., Clague, D.A., Schulz, M.S., and Davis, A.S. (2010): USGS Open-File Report 10-1069
San Marcos Seamount	Hein, J.R., Reid, J.A., Conrad, T.A., Dunham, R.E., Clague, D.A., Schulz, M.S., and Davis, A.S. (2010): USGS Open-File Report 10-1069

Papua New Guinea
West New Britain Province Talasea Peninsula	Lowder, G.G. (1970): Contributions to Mineralogy and Petrology 26, 324-340.

Paraguay
Central Ypacaraí Ypacaraí quarry	Geological Survey Professional Paper 327 (U.S. Department of the Interior, 1959)

Republic of Congo (Brazzaville)
Brazzaville Department (Renéville Department) Zanaga	Bull. Soc. Franç. Minéralo. Cristallo. , 1974, 97, pp. 470-474.

Russia
Eastern-Siberian Region Saha Republic (Sakha Republic; Yakutia) Daldyn-Alakit kimberlite field Daldyn Udachnaya-Vostochnaya pipe	D.A. Zedgenizov et al. , Mineralogical Society of Gret Britain and Ireland, Feb. 2004, V68, N°1, pp. 61-73.
Urals Region Southern Urals Orenburgskaya Oblast' Orsk Khalilovskii District Khabarninskii massif Akkermanovskoe deposit	Sharkov, A.A. (2009): Lithology and Mineral Resources 44(1), 19-35.

Slovakia
Banská Bystrica Region Lučenec Co. Pinciná maar	M. Huraiova et al. , Eur. J. Mineral. , 1996, 8, pp. 901-916.

South Africa
Free State Province Boshof Roberts Victor Mine	Mathias, M., Siebert, J.C., and Rickwood, P.C. (1970): Contributions to Mineralogy and Petrology 26, 75-123.

Spain
Andalusia Granada Colomera meteorite	Bunch, T.E., Keil, K., and Olsen, E. (1970): Contributions to Mineralogy and Petrology 25, 297-340.
Canary Islands Las Palmas Province Gran Canaria (Grand Canary) Mogán	V.R. Troll et al. , Contrib. Mineral. Petrol. , 2003, 145, PP. 730-741.
La Palma San Antonio Volcano	C.K. Brooksa, and I. Printzlau, (1978); Magma mixing in mafic alkaline volcanic rocks: the evidence from relict phenocryst phases and other inclusions
Santa Cruz de Tenerife Province La Gomera Valle Gran Rey Basaltic lava flow	Eur. J. Mineral. , 2002, 14, pp. 891-904.
Castile-La Mancha Albacete Cancarix Sierra de las Cabras	E. Salvioli-mariani et al. , Eur. J. Mineral. , 1996, 8, pp. 1027-1039.
Murcia Cartagena Tallante Cabezo Negro de Tallante Basalt outcrop (1)	S. Capedri et al. : "Upper-mantle xenoliths and megacrysts in an alkali basalt from Tallante, South-eastern Spain", Eur. J. Mineral. , 1989, 1, pp. 685-699.
Basalt outcrop (2)	S. Capedri et al. : "Upper-mantle xenoliths and megacrysts in an alkali basalt from Tallante, South-eastern Spain", Eur. J. Mineral. , 1989, 1, pp. 685-699.
Basalt outcrop (3)	S. Capedri et al. : "Upper-mantle xenoliths and megacrysts in an alkali basalt from Tallante, South-eastern Spain", Eur. J. Mineral. , 1989, 1, pp. 685-699.

Switzerland
Fribourg (Freiburg) Ulmiz Ulmiz meteorite	Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Verlag Wepf & Co. (Basel), p. 500

Tanzania
Kilimanjaro Region Lashaine volcano Peridotite xenoliths	J.B. Dawson, Journal of Petrology, 2002, V 43, N° 9, pp. 1749-1777.
Olmani Cinder Cone (Olmani Hill) Peridotite xenoliths	R.L. Rudnick et al. , Earth and Planetary Science Letters, 114, 1993, pp. 463-475.

The Moon
Apollo 14 Base (Fra Mauro)	Lunar and Planetary Science XXXV (2004)
Basalt 14053	Lunar and Planetary Science XXXIV (2003) and XXXV (2004)
Mare Crisium Luna 24 landing site	Pavel Kartashov

Ukraine
Mykolayiv (Nikolajev; Nikolayev; Nikolaev) Oblast' Krymka meteorite	Semenenko, V.P. and A.L. Girich (1994) Mineralogy of a fragment in the unique graphite-containing Krymka chondrite (LL3): MM: 59: 396-443. www.minersoc.org/pages/Archive-MM/Volume_59/59-396-443.pdf
Transcarpathian Oblast' (Zakarpats'ka Oblast'; Zakarpattia) Rakhivs’kiy rayon Kvasy Borkut meteorite	Keidel, W. (1965): Contributions to Mineralogy and Petrology 11, 487-506

USA
Texas Randall Co. Umbarger meteorite	Zhidong Xie et al. , Lunar and Planetary Science XXXVI (2005), 1216.pdf

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Copyright © Jolyon Ralph and Ida Chau 1993-2011. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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