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Ruby

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Formula:
Al
 
2
O
 
3
Colour:RedHardness:9
A variety of Corundum

A red, gem variety of corundum. The red colour is caused by minor amounts of trivalent Cr replacing Al in the crystal structure.

In traditional gemmological terms, ruby has to be blood-red and of clear, facetable quality to justify the name, however in wider usage any corundum with a red or reddish colour has attracted the name 'ruby', and this name is usually applied in this way by mineral collectors.

Pink corundum is usually referred to in gemmological terminology as pink sapphire rather than ruby.

Pure Cr2O3 occurs in nature as the mineral eskolaite which is green.

Classification of Ruby

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Physical Properties of Ruby

Colour:Red
Hardness (Mohs):9

Chemical Properties of Ruby

Formula:
Al
 
2
O
 
3
Essential elements:Al, O
All elements listed in formula:Al, O

Other Names for Ruby

Synonyms:
Oriental Ruby
Other Languages:
Arabic:ياقوت
Basque:Errubi
Bulgarian:Рубин
Czech:Rubín
Danish:Rubin
Dutch:Rubin
Esperanto:Rubeno
Estonian:Rubiin
Finnish:Rubiini
French:Rubis
Galician:Rubí
German:Rubin
Hebrew:אודם
רובי
Indonesian:Rubi
Italian:Rubino
Japanese:ルビー
Korean:루비
Latvian:Rubīns
Lithuanian:Rubinas
Norwegian (Bokmål):Rubin
Persian:یاقوت
Polish:Rubin
Portuguese:Rubin
Romanian:Rubin
Russian:Рубин
Serbian (Cyrillic Script):Рубин
Simplified Chinese:红宝石
Slovak:Rubín
Slovenian:Rubin
Spanish:Rubí
Swedish:Rubin
Telugu:కెంపు
Thai:ทับทิม
Traditional Chinese:紅寶石
Turkish:Yakut
Ukrainian:Рубін
Vietnamese:Hồng ngọc
Varieties:
BarklyiteStar Ruby

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.

Internet Links for Ruby

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  • Specimens:The following Ruby specimens are currently listed for sale on minfind.com.
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  • Localities for Ruby

    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 symbol next to localities in the list can be used to jump to that position on the map.
    (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.
    Afghanistan
     
    • Badakhshan Province (Badakshan Province; Badahsan Province)
      • Shighnan District
    Orris, G.J., and Bliss, J.D. (2002): Mines and Mineral Occurrences of Afghanistan. United States Geological Survey Open-File Report 02-110
    • Kabol Province (Kabul Province)
      • Surobi District (Sorobi District)
    Garnier, V., Giuliani, G., Ohnenstetter, D., Fallick, A.E., Dubessy, J., Banks, D., Vinh, H.Q., Lhomme, T., Maluski, H., Pêcher, A., Bakhsh, K.A., Long, P.V., Trinh, P.T., and Schwarz, D. (2008): Ore Geology Reviews 34, 169-191.
    Orris, G.J., and Bliss, J.D. (2002): Mines and Mineral Occurrences of Afghanistan. United States Geological Survey Open-File Report 02-110
    Orris, G.J., and Bliss, J.D. (2002): Mines and Mineral Occurrences of Afghanistan. United States Geological Survey Open-File Report 02-110
    Orris, G.J., and Bliss, J.D. (2002): Mines and Mineral Occurrences of Afghanistan. United States Geological Survey Open-File Report 02-110
    Orris, G.J., and Bliss, J.D. (2002): Mines and Mineral Occurrences of Afghanistan. United States Geological Survey Open-File Report 02-110
    Orris, G.J., and Bliss, J.D. (2002): Mines and Mineral Occurrences of Afghanistan. United States Geological Survey Open-File Report 02-110
    Orris, G.J., and Bliss, J.D. (2002): Mines and Mineral Occurrences of Afghanistan. United States Geological Survey Open-File Report 02-110
    Orris, G.J., and Bliss, J.D. (2002): Mines and Mineral Occurrences of Afghanistan. United States Geological Survey Open-File Report 02-110
    Orris, G.J., and Bliss, J.D. (2002): Mines and Mineral Occurrences of Afghanistan. United States Geological Survey Open-File Report 02-110
    Orris, G.J., and Bliss, J.D. (2002): Mines and Mineral Occurrences of Afghanistan. United States Geological Survey Open-File Report 02-110
    Orris, G.J., and Bliss, J.D. (2002): Mines and Mineral Occurrences of Afghanistan. United States Geological Survey Open-File Report 02-110
    Australia
     
    • New South Wales
      • Gloucester Co.
        • Barrington Tops
      • Selwyn Co.
        • Tumbarumba
    Wagga Wagga Mine Data Sheets, 1982
    • Northern Territory
    [MinRec 11:271]
        • Mount Brady
    Zia U. Bajwah, Huckitta 1:250 000 Mineral deposit data series, Northern Territory Geological Survey, 1994
    • South Australia
      • Mt Lofty Ranges
        • South Mt Lofty Ranges
          • Williamstown
    Barossa SI5409 6628I Record of mines - Summary Card No:68
    [var: Barklyite] No reference listed
      • Amphitheatre
      • Cardinia Shire
    Birch, W. D. and Henry, D. A. (1997): Gem Minerals of Victoria
      • East Gippsland Shire
    • Western Australia
      • Cue Shire
        • Cue
          • Poona
    Groat, L.A., Giuliani, G., Marshall, D.D., and Turner, D. (2008): Ore Geology Reviews 34, 87-112.
      • Pilbara Region
    Tom Kapitany collections
    Burma (Myanmar)
     
    • Kachin State
      • Myitkyina District
    • Mandalay Division
      • Ayeyarwady river (Irrawaddy river)
      • Mainglôn
        • Nampai Valley
    Dana 6: 1031.
      • Mandalay District
        • Mandalay
      • Sagaing District
        • Mogok
    Rob Lavinsky
          • Kyauk-Pyat-Thet
            • Wetloo quarter
    Pavel M. Kartashov data
    Themelis, Ted, 2008, Gems and Mines of Mogok.
    Themelis, Ted, 2008, Gems and Mines of Mogok.
    No reference listed
    • Shan State
    Themelis, Ted, 2008, Gems and Mines of Mogok.
    Cambodia
    USGS Minerals yearbook (1994) THE MINERAL INDUSTRY OF CAMBODIA
    • Bătdâmbâng (Khet Batdambang; Battambang) Province
      • Samlot field
    Economic and Social Commission for Asia and the Pacific (1993) Atlas of Mineral Resources for the Escap Region Cambodia Vol 10 UN.
    Economic and Social Commission for Asia and the Pacific (1993) Atlas of Mineral Resources for the Escap Region Cambodia Vol 10 UN.
    • Krong Pailin (Pailin) Municipality
    Peter Cristofono; Eldridge M. Moores, Rhodes Whitmore Fairbridge (1997) Encyclopedia of European and Asian regional geology
    Rocks & Min.: 20:467.
    Economic and Social Commission for Asia and the Pacific (1993) Atlas of Mineral Resources for the Escap Region Cambodia Vol 10 UN.
    Economic and Social Commission for Asia and the Pacific (1993) Atlas of Mineral Resources for the Escap Region Cambodia Vol 10 UN.
    • Môndól Kiri (Mondulkiri) Province
    Eldridge M. Moores, Rhodes Whitmore Fairbridge (1997) Encyclopedia of European and Asian regional geology
    • Rattanakiri (Ratanakiri; Rotanokiri) Province
    Economic and Social Commission for Asia and the Pacific (1993) Atlas of Mineral Resources for the Escap Region Cambodia Vol 10 UN.
    China
     
    • Hainan Province (Hainan Island)
      • Ding'an Co.
        • Penglai
    Wang Furui (1988): Gems & Gemology 24(3), 155-160.
    • Xinjiang (Xinjiang-Uygur) Autonomous Region
      • Akesu (Aksu; Aqsu) Prefecture
        • Baicheng (Bay) Co.
    Yanling Tang (2005): Non-metallic deposits of Xinjiang, China [Zhongguo Xinjiang Fei Jinshu Kuangchuang]. Geological Publishing House (Beijing), 289 pp.
      • Kezilesu (Kizilsu; Qizilsu) Autonomous Prefecture
        • Aketao (Akto; Aqto) Co.
          • Subashi (Subashen)
    Yanling Tang (2005): Non-metallic deposits of Xinjiang, China [Zhongguo Xinjiang Fei Jinshu Kuangchuang]. Geological Publishing House (Beijing), 289 pp.
    • Yunnan Province
      • Yuxi Prefecture
        • Yuanjiang Co.
    Yunkui Qian (2004): Yunnan Geology 23(3), 337-342; Dong Ye and Xueliang Liu (2006): Journal of Gems and Gemmmology 8(3), 21-24.
    Colombia
     
    • Cauca Department
      • Mun. de Mercaderes
    Sutherland, F.L., Duroc-Danner, J.M., and Meffre, S. (2008): Ore Geology Reviews 34, 155-168.
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Liberec Region
        • Jizerské Mts (Iser Mts)
    Kotrlý, M., Malíková, P., Holub F. X.: Malá Jizerská louka, klasické naleziště drahokamové asociace. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1997, roč. 4-5, s. 25-40. and Kotrlý, M., Malíková, P.: Klasická lokalita Malá Jizerská louka. Minerál, 2002, roč. 10, č. 4, s. 251 - 262.
    France
     
    • Alsace
      • Haut-Rhin
        • Sierentz
          • Kembs
    Collected by François Périnet
    • Auvergne
      • Haute-Loire
        • Lavoûte-Chilhac
          • Saint-Ilpize
    FORESTIER F. H., LASNIER B. (1969) – Découverte de niveaux d’amphibolites à pargasite, anorthite, corindon et saphirine dans les schistes cristallins de la vallée du Haut-Allier – Existence du faciès granulite dans la massif Central Français, Contr. Mineral. And Petrol. 23, pp. 194-235.
            • la Redonde
    collected by Guy Pégère and François Périnet.
          • Saint-Privat-du-Dragon
            • Feneyrolles
    Collected by Guy Pégère
    PERINET F., PEGERE G. (2009) – Les sables éluvionnaires à rubis et sapphirine du secteur de Peygerolles, St-Privat-du-Dragon, Haute-Loire – Le Cahier des Micromonteurs, n° 104, pp. 35-41.
    • Languedoc-Roussillon
      • Lozère
        • Marvejols
    BAISSIERES D. (2010) – Ma vallée des rubis… Viala-du-Tarn, Aveyron. Le Règne Minéral n°93, pp 67-69.
    • Midi-Pyrénées
      • Aveyron
        • Saint-Beauzély
    BAISSIERES D. (2010) – Ma vallée des rubis… Viala-du-Tarn, Aveyron. Le Règne Minéral n°93, pp 67-69.
    Germany
     
    • Saxony
      • Döbeln
        • Waldheim
    H. Vollstädt, R. Baumgärtel: "Einheimische Edelsteine", 2nd. ed., Steinkopff (Dresden), 1977
    Greece
     
    • Macedonia Department
      • Dráma Prefecture
    Christos Spiromitros collected specimens.
    Greenland
     
    • Kitaa (West Greenland) Province
      • Nuuk (Godthåb)
    Petersen, O. V. & Secher, K. (1993): The Minerals of Greenland. Mineralogical Record 24 (2): 1-67
          • Bjørnesund
    Petersen, O.V & Johnsen, O. (1980): Giant crystals of Kornerupine. Mineralogical Record 11,93-96
    Friend, C,R.L. (1982): A1-Cr substitution in peraluminous sapphirines
    India
     
    Rob Lavinsky
    • Karnataka
    No reference listed
    [www.johnbetts-fineminerals.com]
    Kenya
     
    • Coast Province
      • Taita Taveta District
    Mercier A., Debat P. & Saul J.M. (1999): Exotic origin of the ruby deposits of the Mangari area in SE Kenya. Ore Geology Reviews, 14, 83-104.
        • Tsavo West
    [www.johnbetts-fineminerals.com]
          • Tsavo West
    Madagascar
     
    • Antananarivo Province
      • Vakinankaratra Region
        • Antsirabé 2 District
    Rakotondrazafy, A.F.M., Giuliani, G., Ohnenstetter, D., Fallick, A.E., Rakotosamizanany, S., Andriamamonjy, A., Ralantoarison, T., Razanatseheno, M., Offant, Y., Garnier, V., Maluski, H., Dunaigre, C., Schwarz, D., and Ratrimo, V. (2008): Ore Geology Reviews 34, 134-154.
    Giuliani, G., Fallick, A., Rakotondrazafy, M., Ohnenstetter, D., Andriamamonjy, A., Ralantoarison, T., Rakotosamizanany, S., Razanatseheno, M., Offant, Y., Garnier, V., Dunaigre, C., Schwarz, D., Mercier, A., Ratrimo, V., and Ralison, B. (2007): Mineralium Deposita 42, 251-270.
    • Fianarantsoa Province
      • Horombe Region
        • Ihosy District
          • Zazafotsy Commune
    Pezzotta F. (2005): Rubini e zaffiri. Corindoni policromi di Amboarohy, Ihosy, Madagascar. Rivista Mineralogica Italiana,30 (2): 116-124
        • Ranohira District
          • Ilakaka Commune
    Gem News.Gems & Gemmology 39 (3): 222-249
    • Toamasina (Tamatave) Province
      • Alaotra-Mangoro Region
        • Ambatondrazaka District
    Giuliani, G., Fallick, A., Rakotondrazafy, M., Ohnenstetter, D., Andriamamonjy, A., Ralantoarison, T., Rakotosamizanany, S., Razanatseheno, M., Offant, Y., Garnier, V., Dunaigre, C., Schwarz, D., Mercier, A., Ratrimo, V., and Ralison, B. (2007): Mineralium Deposita 42, 251-270.
      • Analanjirofo Region
        • Fenoarivo East (Fenerive) District
    Giuliani, G., Fallick, A., Rakotondrazafy, M., Ohnenstetter, D., Andriamamonjy, A., Ralantoarison, T., Rakotosamizanany, S., Razanatseheno, M., Offant, Y., Garnier, V., Dunaigre, C., Schwarz, D., Mercier, A., Ratrimo, V., and Ralison, B. (2007): Mineralium Deposita 42, 251-270.
    T.R.Yager: The Mineral Industry of Madagascar. US.Geological Survey Yearbook 2001, 201-204.
      • Eastern (Atsinanana) Region
        • Vatomandry District
    • Tuléar (Toliara) Province
      • Androy Region
        • Bekily District
    Dan Weinrich
      • Anosy (Fort Dauphin) Region
        • Amboasary District
    Martins da Pedra photo
        • Betroka District
          • Isoanala Commune
    Giuliani, G., Fallick, A., Rakotondrazafy, M., Ohnenstetter, D., Andriamamonjy, A., Ralantoarison, T., Rakotosamizanany, S., Razanatseheno, M., Offant, Y., Garnier, V., Dunaigre, C., Schwarz, D., Mercier, A., Ratrimo, V., and Ralison, B. (2007): Mineralium Deposita 42, 251-270.
      • Southwestern Region
        • Ampanihy District
          • Ejeda Commune
    Giuliani, G., Fallick, A., Rakotondrazafy, M., Ohnenstetter, D., Andriamamonjy, A., Ralantoarison, T., Rakotosamizanany, S., Razanatseheno, M., Offant, Y., Garnier, V., Dunaigre, C., Schwarz, D., Mercier, A., Ratrimo, V., and Ralison, B. (2007): Mineralium Deposita 42, 251-270.
          • Gogogogo Commune
    Giuliani, G., Fallick, A., Rakotondrazafy, M., Ohnenstetter, D., Andriamamonjy, A., Ralantoarison, T., Rakotosamizanany, S., Razanatseheno, M., Offant, Y., Garnier, V., Dunaigre, C., Schwarz, D., Mercier, A., Ratrimo, V., and Ralison, B. (2007): Mineralium Deposita 42, 251-270.
          • Vohitany Commune
    Giuliani, G., Fallick, A., Rakotondrazafy, M., Ohnenstetter, D., Andriamamonjy, A., Ralantoarison, T., Rakotosamizanany, S., Razanatseheno, M., Offant, Y., Garnier, V., Dunaigre, C., Schwarz, D., Mercier, A., Ratrimo, V., and Ralison, B. (2007): Mineralium Deposita 42, 251-270.
    Malawi
     
    • Mwanza District
    • Ntcheu District
    Mozambique
     
    • Tete Province
      • Chimessolo
    António Manuel Ináçio Martins.
    Nepal
    J. Gemmol. 1986. V. 20. N 1. P. 3-10
    • Bagmati Zone
      • Dhading District
    Garnier, V., Giuliani, G., Ohnenstetter, D., Fallick, A.E., Dubessy, J., Banks, D., Vinh, H.Q., Lhomme, T., Maluski, H., Pêcher, A., Bakhsh, K.A., Long, P.V., Trinh, P.T., and Schwarz, D. (2008): Ore Geology Reviews 34, 169-191.
    Garnier, V., Giuliani, G., Ohnenstetter, D., Fallick, A.E., Dubessy, J., Banks, D., Vinh, H.Q., Lhomme, T., Maluski, H., Pêcher, A., Bakhsh, K.A., Long, P.V., Trinh, P.T., and Schwarz, D. (2008): Ore Geology Reviews 34, 169-191.
      • Rasuwa District
        • Somdang
    Rob Lavinsky specimen
    New Zealand
     
    • South Island
      • Arahura Valley
    Norway
     
    • Aust-Agder
      • Froland
    Oftedahl, Chr. (1963): Contributions to the mineralogy of Norway No 19. Red corundum of Froland at arendal. Norsk Geologisk Tidsskrift 43, 431-439; Eldjarn, K. (1979): Mineraler i Norge- Korund. NAGS-nytt 6 (4): 29-31
    Pakistan
     
    • Azad Kashmir
      • Muzaffarabad district
    Dudley Blauwet, Bill Smith and Carol Smith (2004) Table of mineral localities of the northern areas of Pakistan and other selected sites. (in "Pakistan: Minerals, Mountains & Majesty", Lapis International, East Hampton, Connecticut)
        • Neelum Valley
    Dudley Blauwet, Bill Smith and Carol Smith (2004) Table of mineral localities of the northern areas of Pakistan and other selected sites. (in "Pakistan: Minerals, Mountains & Majesty", Lapis International, East Hampton, Connecticut)
    • Gilgit-Baltistan (Northern Areas)
      • Astor District (Astore District)
    Dudley Blauwet, Bill Smith and Carol Smith (2004) Table of mineral localities of the northern areas of Pakistan and other selected sites. (in "Pakistan: Minerals, Mountains & Majesty", Lapis International, East Hampton, Connecticut)
      • Baltistan
        • Skardu District
          • Basha Valley (Basha Nala; Basna)
    Ikram Mineralogy
      • Gilgit District
    Gübelin, E. (1982): Die Edelsteinvorkommen Pakistans. 1. Teil. Die Rubine aus dem Hunzatal. LAPIS 7 (5),19-26
    Dudley Blauwet, Bill Smith and Carol Smith (2004) Table of mineral localities of the northern areas of Pakistan and other selected sites. (in "Pakistan: Minerals, Mountains & Majesty", Lapis International, East Hampton, Connecticut)
    Russia
     
    • Northern Region
      • Karelia Republic
        • Northern Karelia
    [MinRec 28:132]
    • Western-Siberian Region
      • Polar Urals
        • Tyumenskaya Oblast'
    [MinRec 32:42]
    Somaliland
     
    Sri Lanka
     
    • Central Province
    • North Central Province
      • Polonnaruwa District
    • Sabaragamuwa Province
      • Ratnapura District
    No reference listed
    Econ Geol (1981) 76:733-738
    • Western Province
    Switzerland
     
    • Bern
      • Hasli Valley
        • Grimsel area
          • Lower Aar glacier area
            • Lower Aar glacier
    Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 242.
    • Grischun (Grisons; Graubünden)
      • Misox (Mesolcina Valley)
        • Roveredo
    Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 242.
    • Ticino (Tessin)
      • Riviera
    Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 242.
    Tajikistan
     
    • Viloyati Mukhtori Gorno-Badakhshan (Viloyati Badakhshoni Kuni)
    [MinRec 32:42]
        • Pyandzh River Valley
          • Kukh-i-Lal (Kukhilal; Kuhi-lal)
    Pavel M. Kartashov data
    Tanzania
     
    • Arusha Region
    Min. Rec. 35:145
      • Lake Manyara
    Emeralds of the World English extraLapis Vol. 2 2002 pp24-35
    • Dodoma region
      • Mpapwa (Mpwampwa) District
        • Mpapwa
    Schmetzer, K., Radl, W. & Schwarz, D. (2009): Winza ein neues Rubinvorkommen in Tansania. Lapis 34 (5), 41-46.
    • Kilimanjaro Region
      • Mt Kilimanjaro
        • Longido
    Hintze, J. (2010): Safari ndjema - Afrikanisches Tagebuch (II): Rubin in Zoisit - ein Klassiker aus Longido in Tansania. Lapis 35 (12), 15-19 (in German)
          • Muriatata hills
    Hintze, J. (2010): Safari ndjema - Afrikanisches Tagebuch (II): Rubin in Zoisit - ein Klassiker aus Longido in Tansania. Lapis 35 (12), 15-19 (in German)
    • Morogoro Region
      • Mahenge
    Hintze, J. (2011): Afrikanisches Tagebuch (III): Die Spinelle von Mahenge, Tansania. Lapis 36 (7-8), 26-30.
    Hintze, J. (2011): Afrikanisches Tagebuch (III): Die Spinelle von Mahenge, Tansania. Lapis 36 (7-8), 26-30.
    Hintze, J. (2011): Afrikanisches Tagebuch (III): Die Spinelle von Mahenge, Tansania. Lapis 36 (7-8), 26-30.
    • Rukwa Region
      • Nkasi District
        • Chala village
    • Ruvuma Region
    • Tanga Region
    Jaroslav Hyrsl specimens
    Thailand
     
    USA
     
    • Alabama
    Gems and Minerals of America- Jay Ellis Ransom-1974
    • California
      • San Bernardino Co.
        • San Gabriel Mts
          • San Antonio Canyon
    Widely distributed in numerous collections.
    • Georgia
    Gems and Minerals of America-Jay Ellis Ransom-1974
    Gems and Minerals of America- Jay Ellis Ransom-1974
    Gems and Minerals of America- Jay Ellis Ransom-1974
    Gems and Minerals of America- Jay Ellis Ransom-1974
    Gems and Minerals of America- Jay Ellis Ransom-1974
    • Indiana
    Gems and Minerals of America- Jay Ellis Ransom-1974
    • Montana
      • Granite Co.
        • Rock Creek District
    USGS Bull 269
    Jay Ellis Ransom,1974, Gems and Minerals of America
      • Madison Co.
    USGS Bull 269
    • New Jersey
    Gems and Minerals of America- Jay Ellis Ransom -1974
    • North Carolina
      • Clay Co.
    Michael Streeter,2003, A Rockhounding Guide to North Carolinas Blue Ridge Mountains
        • Elf School area
    Michael Streeter,2003, A Rockhounding Guide to North Carolinas Blue Ridge Mountains
    [www.johnbetts-fineminerals.com]
    U.S Bureau of Mines,Spatial Data Extracted from the Minerals System/Mineral Industry Location System(MAS/MILS)CD-Rom,Sep,1995
    Gems and Minerals of America-Jay Ellis Ransom-1974
      • Lincoln Co.
        • Lincolnton
    Rocks & Min.: 60:56.
      • Macon Co.
        • Alarka
    U.S Bureau of Mines,Spatial Data Extracted from the Minerals System/Mineral Industry Location System (MAS/MILS)CD-Rom,Sep,1995
    U.S Bureau of Mines,Spatial Data Extracted from the Minerals System/Mineral Industry Location System(MAS/MILS)CD-Rom,Sep,1995
    Wilson,W.F and McKenzie,B.J,1978,Mineral Collecting Sites in North Carolina
    U.S Bureau of Mines,Spatial Data Extacted from the Minerals System/Mineral Industry Location System(MAS/MILS)CD-Rom,Sep,1995.
    U.S Bureau of Mines, Sep, 1995
    U.S Bureau of Mines, Sep, 1995
        • Cowee Valley
          • Ellijay District
              • Corundum Hill
    Corundum and the peridotites of western North Carolina By Joseph Hyde Pratt, Joseph Volney Lewis
    U.S Bureau of Mines, Sep, 1995
    U.S Bureau of Mines, Sep,1995
    U.S Bureau of Mines, Sep,1995
    U.S Bureau of Mines, Sep,1995
    U.S Bureau of Mines, Sep,1995
    Wilson,W.F and McKenzie,B.J,1978,Mineral Collecting Sites in North Carolina,Information Circular 24
    Dana 6: 1077.
    Gems and Minerals of America-Jay Ellis Ransom-1974
      • Transylvania Co.
    Richard James Jacquot,Jr.2003,Rock,Gem,and Mineral Collecting Sites In Western North Carolina, pg # 144; American Mineralogist,Vol.18,No.4,April,1933
      • Wake Co.
        • Barton's Creek
    Rocks & Minerals 47:645-648 (1972)
    • Utah
      • Tooele Co.
        • Oquirrh Mts
          • Ophir District
    U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    • Washington
      • Okanogan Co.
        • Riverside
    Minerals of Washington, Bart Cannon 1975
    • Wyoming
      • Fremont Co.
        • Granite Mountains
          • Graham Ranch
    Rocks & Minerals 77:5 pp334-339
    Rocks & Minerals 77:5 pp334-339; USGS Bull 1042G
        • Tin Cup Mountain
    Rocks & Minerals 76:386
    Vietnam
     
    • Nghe An (Nghe Tinh) Province
    • Yenbai (Yen Bai) Province
    [www.johnbetts-fineminerals.com]
    Garnier, V., Giuliani, G., Ohnenstetter, D., Fallick, A.E., Dubessy, J., Banks, D., Vinh, H.Q., Lhomme, T., Maluski, H., Pêcher, A., Bakhsh, K.A., Long, P.V., Trinh, P.T., and Schwarz, D. (2008): Marble-hosted ruby deposits from Central and Southeast Asia: Towards a new genetic model. Ore Geology Reviews 34, 169-191.
    Zimbabwe
     
    • Midlands
      • Gweru (Gwelo) District
        • Somabula
    Extra Lapis English 14:58-59
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