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Melilite Group

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Formula:
Ca
 
2
M(XSiO
 
7
)


A group of tetragonal soro-silicates with a disilicate anion (Si2O7)6- or a derivative thereof and the general formula given above, where M denotes a small- to medium-sized divalent or trivalent cation and X is Si, Al or B. In general, Al or B replace one Si atom when M is a trivalent ion, but the charge can also be balanced by coupled substitution of Ca2+ with a monovalent ion and M3+ with M2+, such as in Alumoåkermanite, where Al3+ is still dominant on the M-site but the mineral is far from end-member composition.

A large number of synthetic members are known.

Classification of Melilite Group

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Chemical Properties of Melilite Group

Formula:
Ca
 
2
M(XSiO
 
7
)

Relationship of Melilite Group to other Species

Group Members:
Åkermanite
Ca
 
2
Mg(Si
 
2
O
 
7
)
Alumoåkermanite
(Ca,Na)
 
2
(Al,Mg,Fe
2+
 
)(Si
 
2
O
 
7
)
Ferri-gehlenite
Ca
 
2
Fe
3+
 
AlSiO
 
7
Gehlenite
Ca
 
2
Al(AlSiO
 
7
)
Gugiaite
Ca
 
2
Be(Si
 
2
O
 
7
)
Hardystonite
Ca
 
2
Zn(Si
 
2
O
 
7
)
Okayamalite
Ca
 
2
B(BSiO
 
7
)

Other Names for Melilite Group

Synonyms:
Melilite
Other Languages:
Simplified Chinese:黄长石

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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  • Localities for Melilite Group

    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.
    Algeria
     
    • Tamanghasset Province
      • Tanezrouft
    Weber D, Bischoff A (1994) Grossite (CaAl4O7) - a rare phase in terrestrial rocks and meteorites, European Journal of Mineralogy 6, 591-594
    Antarctica
     
    • Eastern Antarctica
      • Mac Robertson Land
        • Prince Charles Mts
    S. F. Foley, A. V. Andronikov, S. Melzer (2002) Petrology of ultramafic lamprophyres from the Beaver Lake area of Eastern Antarctica and their relation to the breakup of Gondwanaland. Mineralogy and Petrology 74:361-384
    Australia
     
    • Queensland
      • Tablelands Region
        • Chillagoe-Herberton district
    Rubenach, M.J. and Cuff, C. (1985) Mineral. Mag. 49, 71-75.
    • South Australia
      • Leigh Creek
    [Gehlenite] Baker, G. (1953): Transactions of the Royal Society of South Australia, 76, 1-20.
    Austria
     
    • Burgenland
      • Oberpullendorf
        • Kobersdorf
          • Pauliberg
    [Gehlenite] U. Kolitsch, W. Postl, H.-P. Bojar and W. Trattner (2009): Die Mineralvorkommen im Basalt des Pauliberges. In: Autorenkollektiv (Red. M. A. Götzinger und P. Huber) (2009): Die Mineralien des Burgenlandes - Geologie, Mineralogie und mineralische Rohstoffe. – Wissenschaftliche Arbeiten aus dem Burgenland, Band 126, Amt der Burgenländischen Landesregierung, Abteilung 7 - Landesmuseum, Eisenstadt, 83-99.
    • Styria
      • Bad Radkersburg
        • Klöch
    [Gehlenite] R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
    • Tyrol
      • North Tyrol
        • Inn valley
          • Brixlegg - Schwaz area
    [Åkermanite] Kolitsch, U. (2013): 1799) Anglesit, Brochantit, Calcit, Callaghanit, Connellit, Cuprit, Diopsid, Elyit, Forsterit, Kupfer, Lithargit, Magnesiochromit, Malachit, Monohydrocalcit, Phoenicochroit, Rouait und Willemit in Schlacken der Montanwerke Brixlegg, Tirol. In Niedermayr, G. et al. (2013): Neue Mineralfunde aus Österreich LXII. Carinthia II, 203./123. (in press).
    Cameroon
     
    • South-West Region
      • Buea
        • Cameroon Mt.
    [Alumoåkermanite] Fitton, G.J., Hughes D.J. (1981): Strontian melilite in a nephelinite lava from Etinde, Cameroon, Mineralogical Magazine, Vol. 44, pp. 261-264
    Canada
     
    • Newfoundland and Labrador
      • Labrador
    [Åkermanite] OWENS, B.E. & KREMSER, P.T. (2010) Åkermanite breakdown to cuspidine-bearing sympectite in a calc-silicate xenolith, Kiglapait intrusion, Labrador, Canada. Canadian Mineralogist 48, 809-819.
    [Åkermanite] Am Min 85:1595–1605, (2000)
    • Québec
      • Laurentides
        • Deux-Montagnes RCM
          • Oka
            • Oka complex
    [Åkermanite] Sabina (1968)
    GOLD, D.P. (1969) The Oka carbonatite and alkaline complex. Guidebook GAC/MAC Annual meeting 1969, 43-62.
          • Saint-Joseph-du-Lac
            • Oka complex
    [Åkermanite] Sabina (1968)
      • Montérégie
        • Brome-Missisquoi RCM
    PHILPOTTS, A.R., PATTISON, E.F. & FOX, J.S. (1967) Kalsilite, diopside and melilite in a sedimentary xenolith from Brome Mountain, Quebec. Nature 214, 1322-1323.
      • Montréal
    [Gehlenite] Dolan (1923)
    China
     
    • Anhui Province
      • Huaibei Prefecture
        • Suixi Co.
          • Sanpu ore field
    [Gehlenite] Yiming Zhao, Yinan Zhang, and Chengsi Bi (1999): Ore Geology Reviews 14, 227-249.
    • Jiangsu Province
      • Suzhou Prefecture
        • Zhangjiagang Co.
          • Tangqiao
    [Gugiaite] Peng Chi-Jui, Tsao Rung-Lung, and Chou Zu-Rin (1962): Scientia Sinica 11 (7), 977-988.
    • Tibet Autonomous Region
      • Shannan (Lhokha; Lhoka) Prefecture
        • Qusum (Qusong) Co.
    [Gehlenite] Wenji Bai, Jingsui Yang, Qingsong Fang, Binggan Yan, and Zhongming Zhang (2001): Earth Science Frontiers 8(3), 111-121
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Central Bohemia Region
        • Kutná Hora (Kuttenberg)
          • Poličany
            • Vrchlice river valley
    [Åkermanite] Pauliš P. Mineralogické lokality okolí Kutné Hory. Kuttna, Kutná Hora 1999. ISBN 80-902719-0-1.
      • Ústí Region
        • Duchcov (Dux)
    [Åkermanite] Žáček V., Skála R., Chlupáčová M., Dvořák Z. 2005: Ca-Fe3+-rich, Si-undersaturated buchite from Želénky, North-Bohemian Brown Coal Basin, Czech Republic. Eur. J. Mineral., 17, 623-633
        • Most
    Žáček V, Skála R., Dvořák Z.: Spinelidy v pyrometamorfovaných horninách Mostecké pánve. Minerál, 2010, 18, 1, 21-31.
    Germany
     
    • Baden-Württemberg
      • Kaiserstuhl
        • Schelingen
          • Orberg - Badberg area
    [Åkermanite] Keller, J., Williams T. (1995): Niocalite and Wöhlerite from the alkaline and carbonatite rocks at Kaiserstuhl, Germany, Mineralogical Magazine, Vol.: 59, 561-566
    • Lower Saxony
      • Harz
        • Bad Harzburg
    [Gehlenite] No reference listed
        • Goslar
          • Astfeld
    [Åkermanite] No reference listed
    • North Rhine-Westphalia
      • Aachen
        • Stolberg
    [Åkermanite] Blaß, G. & Graf, H. W. (1995): Neufunde von Schlackenhalden in der nördlichen Eifel (II). Mineralien-Welt, 6 (3), 28-31.
    [Åkermanite] Rolf Luetcke specimen; Blaß, G. & Graf, H. W. (1995): Neufunde von Schlackenhalden in der nördlichen Eifel (II). Mineralien-Welt, 6 (3), 28-31.
    • Rhineland-Palatinate
      • Eifel
        • Daun
          • Üdersdorf
    [Gehlenite] Schüller, W., Betz, V., Die Mineralien vom Emmelberg, Lapis 12/1986
        • Hillesheim
    [Åkermanite] in the collection of Christof Schäfer
        • Laach lake volcanic complex
          • Wassenach
    [Gehlenite] Hentschel, G., (1987): Die Mineralien der Eifelvulkane, Weise Verlag, München (second edition)
        • Mayen
          • Ettringen
            • Bellerberg volcano
    [Åkermanite] [Blass, G., Graf, H.W., Neue Mineralienfunde aus der Eifel und dem Siegerland, Mineralien-Welt 10/3, 23, 1999] [A. Wittern: Mineralfundorte in Deutschland, Schweizerbart (Stuttgart), 2001]
              • Southern lava flow
                • Mayener Feld
    [Gehlenite] Fischer, R.X. Tillmanns, E. (1983): Die Kristallstrukturen von natürlichem Na2Ca2Si3O9 vom Mt. Shaheru (Zaire) und aus dem Mayener Feld (Eifel), N. Jb. Mineral. Mh. 49-59
              • Western lava flow
    [Gehlenite] Hentschel, G. (1961): Seltene Mineralneubildungen in einem Kalksteineinschluß der Lava des Ettringer Bellerberges, Fortschritte Mineralogie, Vol. 39, 345
        • Mendig
          • Niedermendig
    [Gehlenite] Hentschel, G., Die Mineralien der Eifelvulkane, Weise Verlag München, 1983
        • Polch
          • Ochtendung
    [Gehlenite] Blass, G., Graf , HW., Die Wannenköpfe bei Ochtendung in der Vulkaneifel und ihre Mineralien, MW 6/1999
      • Lahn valley
        • Bad Ems District
          • Braubach
    Schnorrer-Köhler, G. & David, W. (1991): Die Blei- und Silberhütte Braubach und ihre Haldenminerale. Lapis, 16 (1), 38-49; 58 (in German).
    • Saxony-Anhalt
      • Mansfeld Basin
        • Hettstedt
    [Hardystonite] Elmar Lackner collection
    [Hardystonite]
    [Hardystonite] Besteman, Andre, et al, Hettstedt-smelter slag-dumps, Mansfeld Basin, Sachsen-Anhalt, Germany, The Strahlen Foundation.
    Greece
     
    • Attikí (Attica; Attika) Prefecture
      • Lavrion (Laurion; Laurium) District
    [Gehlenite] Schnorrer-Köhler, G., Standfuss, L. & Standfuss, K. (1991): Neue Funde aus den antiken Schlacken von Lavrion, Griechenland. Lapis, 16 (6), 21-23; 58.
    Hungary
     
    • Pest Co.
      • Pilis Mts.
        • Pomáz
    [Gehlenite] Fehér, B. (2000): Gehlenitic xenoliths from the Klanác Hill, Pomáz, Visegrád Mountains, Hungary. Acta Mineralogica-Petrographica (Szeged), XLI, Suppl., 39.
    Iran
     
    • East Azarbaijan Province (East Azerbaijan Province)
      • Ahar County
        • Ahar
    [Gehlenite] Mollai, H., Sharma, R., and Pe-Piper, G. (2009): Ore Geology Reviews 35, 401-414.
    Iraq
     
    • Qala-Diz (Qala-Dizeh; Qala-Diza)
      • Hero
    [Åkermanite]
    Israel
     
    • Negev
    [Gehlenite] Sharygin, V.V., Sokol, E.V. & Vapnik, Ye. (2008): Minerals of the pseudobinary perovskite-brownmillerite series from combustion metamorphic larnite rocks of the Hatrurim Formation (Israel). Russian Geology and Geophysics 49, 709-726.
    [Åkermanite] Gross, S. (1977): The Mineralogy of the Hatrurim Formation, Israel. Geological Survey of Israel, Bulletin no. 70, 80 pp.
    Italy
     
    • Campania
      • Naples Province
        • Somma-Vesuvius Complex
    [Åkermanite] [Lapis 1994:5 p.13-23,58]
            • Pollena - Trocchia area
    [Gehlenite] Russo, M. & Punzo, I. (2004): I minerali del Somma-Vesuvio. AMI, Ed., Cremona, Italy, 320 pp.
    • Latium
      • Rome Province
        • Bracciano Lake
    [Gehlenite] Schingaro, E. et al. (2001): Crystal chemistry of Kimzeyite from Anguillara, Mts. Sabatini, Italy, European Journal of Mineralogy, Vol. 13, 749-759
        • Rome
    [Gehlenite] Gresta, S., Duronio, F., Mancinella D. (2002): Geositi e Sistema delle Aree Protette del Lazio: idee per la geoconservazione. Il Cercapietre. Not. del Gruppo Mineralogico Romano, 1-2: 48-55
          • Valleranello
    [Gehlenite]
        • Sacrofano Caldera
          • Campagnano di Roma
    [Åkermanite]
          • Magliano Romano
    [Gehlenite] Stoppani, F.S. & Curti, E. (1982): I minerali del Lazio. Editoriale Olimpia, Firenze, 291 pp.
          • Sacrofano
    [Åkermanite] Vik Vanrusselt Collection
      • Viterbo Province
        • Làtera volcano
          • Gradoli
    - Signoretti, E. & Bosco, P. (2001): Le cave di Gradoli e Onano. Il Cercapietre, 1/2-2001, 10-25
        • Montalto di Castro
          • Pietra Massa Locality
    [Gehlenite] Passaglia, E. & Turconi, B. (1982): Silicati ed altri minerali di Montalto di Castro - VT. Rivista Mineralogica Italiana, 4/1982, 97-110.
    [Gehlenite] Lapis 28(12), 19-28 (2003)
    • Piedmont
      • Torino Province
        • Canavese District
          • Chiusella Valley
            • Traversella
    [Gehlenite] Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
      • Verbano-Cusio-Ossola Province
        • Baveno
          • Oltrefiume
            • Mount Camoscio
    [Gugiaite] Grill, E. (1935): I minerali del granito di Baveno, la fayalite. Periodico di Mineralogia, 129-133. - Gallitelli, P. (1936): Le miche del granito di Baveno. . Periodico di Mineralogia, 61-76 - Pagliani, G. (1948): Le Zeoliti del granito di Baveno. Periodico di Mineralogia, 175-188. - Ravagnani, D. (1974): I giacimenti uraniferi italiani - Gruppo Mineralogico Lombardo - Museo Civico di Storia Naturale di Milano, Ed., Milano, 188 pp. - min. Rec. 14 (3), 157-168 - Am. Min. 83, 1330-1334 (1998) - Am. Min. 84, 782-789 (1999). - Guastoni, A. & Pezzotta, F. (2004): Kristiansenite a Baveno, second ritrovamento Mondiale della specie. Rivista Mineralogica Italiana, 4/2004, 247-251. - Guastoni, A., Demartin, F., Pezzotta, F. (2004): Sekaninaite delle pegmatiti granitiche di Feriolo e Baveno (VB). Atti della Società Italiana di Scienze Naturali e del Museo Civico di Storia Naturale di Milano, 145, 59-68. - Mineralogist americano (2005) 90, 1442-1452.
    [Gugiaite] American Mineralogist, 84(5-6), 782-789
    • Sardinia
      • Medio Campidano Province
        • Arbus
    [Gehlenite] Preite, D., & Zuanel, A. (2007). Montevecchio: storia, miniere e minerali. Rivista Mineralogica Italiana, 31 (4), 230-246.
    • Trentino-Alto Adige
      • Trento Province
        • Fassa Valley
    [Gehlenite] J. N. Fuchs (1815) J. Phys. Chem. (Schweigger), 15, 377
    [Gehlenite] De Michele, V. (1974). Guida mineralogica d'Italia. Istituto Geografico De Agostini, Novara, 2 vol.
    [Gehlenite] De Michele, V. (1974). Guida mineralogica d'Italia. Istituto Geografico De Agostini, Novara, 2 vol.
    [Gehlenite] De Michele, V. (1974). Guida mineralogica d'Italia. Istituto Geografico De Agostini, Novara, 2 vol.
    [Gehlenite] Exel, R. (1987): Guida mineralogica del Trentino e del Sudtirolo. Athesia, Bolzano, 204 pp.
        • Fiemme Valley
    [Gehlenite] De Michele, V. (1974). Guida mineralogica d'Italia. Istituto Geografico De Agostini, Novara, 2 vol.
    • Tuscany
      • Grosseto Province
        • Pitigliano
    [Gehlenite] Liotti L., 1991. I minerali dei vulcani laziali a Pitigliano (Grosseto). Riv. Mineral. Ital., 15: 121-139.
    • Umbria
      • Perugia Province
        • Spoleto
    [Åkermanite] Stoppa F., Sharygin V.V., 2009. Melilitolite intrusion and pelite digestion by high temperature kamafugitic magma at Colle Fabbri, Spoleto, Italy. Lithos, 112, 306-320.
    Japan
     
    • Ehime Prefecture
      • Inland Sea (Setonaikai)
    [Gugiaite] Matsubara, S. (2002): The Mineral Species of Japan, p27
    • Honshu Island
      • Chubu Region
        • Gifu Prefecture
          • Ena City
    [Gehlenite] Excalibur Mineral Co. specimens
      • Chugoku Region
        • Hiroshima prefecture
          • Hiba-gun
    [Gehlenite] Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)
        • Okayama Prefecture
          • Takahashi City
            • Bitchu-cho (Bicchu-cho)
    [Gehlenite] Mineralogical Record: 27: 304.; Journal of Mineralogical and Petrological Sciences Vol. 99 (2004) , No. 2 April 67-71
        • Shimane Prefecture
          • Hamada City
    [Åkermanite] The Mineral Species of Japan (5th ed) Matsubara
      • Tohoku Region
        • Fukushima Prefecture
    [Gehlenite] Matsuyama, F. (2001)
        • Iwate Prefecture
          • Esashi City
    [Gehlenite] Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)
          • Kamaishi City
    [Gehlenite] Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)
    Kenya
     
    • Coast Province
    Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
    • Nyanza Province
    Chris M. Nyamai and I. Haapala (2000) A Comparison of the uncompahgrite and turjaite mineralogy (phlogopite, melilite, etc.) of the south Nyanza district, western Kenya, with similar rock complexes in Asia, Australia and America. China and East Asia 2000 Symposium.
    Malawi
     
    • Balaka District
    Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
    Mexico
     
    • Coahuila
      • Mun. de Sierra Mojada
        • Sierra Mojada
    [Gehlenite] Mineralogical Magazine 1964 33 : 841-852
    • Durango
      • Mun. de Cuencamé
        • Velardeña District
          • Velardeña
    [Gehlenite] Panczner (1987): 206.
    Morocco
     
    • Meknès-Tafilalet Region
      • Er Rachidia Province
        • Erfoud (Erfud)
          • Rissani
    [Gehlenite] Caltech, photomicrograph by Chi Ma.
    Namibia
     
    • Otjikoto (Oshikoto) Region
      • Tsumeb
    [Åkermanite] Ettler, V., Johan, Z., Kříbek, B., Šebek, O. & Mihaljevič, M. (2009): Mineralogy and environmental stability of slags from the Tsumeb smelter, Namibia. Applied Geochemistry 24, 1-15.
    New Zealand
     
    • North Island
      • Northland
        • Kaipara
    [Gehlenite] Mason, B. (1957): Larnite, scawtite, and hydrogrossular from Tokatoka, New Zealand. American Mineralogist 42, 379-392.
    Norway
     
    • Aust-Agder
      • Arendal
    [Okayamalite] Olmi, F., Viti, C., Bindi, L., Bonazzi, P. & Menchetti, S. (2000): Second occurrence of okayamalite, Ca2SiB2O7: chemical and TEM characterization. American Mineralogist.
    • Telemark
      • Skien
    [Åkermanite] Jamtveit B., Dahlgren S. and Austrheim H. (1997): High-grade contact metamorphism of calcareous rocks from the Oslo Rift, Southern Norway. American Mineralogist. 82 : 1241 - 1254
    Outer Space
     
    [Gehlenite] Gornitz, V. (2007) Hot & cold origins: the mineralogy of a comet. Mineral News, 23, #1, 1-4.
    Palestine
     
    • West Bank
      • Hatrurim Formation
    [Gehlenite] Seryotkin Y.V., Sokol E.V. & Kokh S.N. 2012: Natural pseudowollastonite: Crystal structure, associated minerals, and geological context. Lithos, vol. 134-135, pp. 75-90; Seryotkin, Yu.V., Sokol, E.V., Kokh, S.N. (2012): Natural pseudowollastonite: Crystal structure, associated minerals, and geological context. Lithos, 134–135, 75-90.
    Poland
     
    • Upper Silesia (Śląskie)
      • Katowice
        • Świętochłowice
    [Hardystonite] Puziewicz, J., Zainoun, K. and Bril, H. (2007): Primary phases in pyrometallurgical slags from a zinc-smelting waste dump, Świętochłowice, Upper Silesia, Poland. Can. Mineral. 45, 1189-1200.
    Romania
     
    • Caraş-Severin Co.
      • Banat Mts
        • Oraviţa-Ciclova Cu-Mo-(W) ore field
    [Gehlenite] Ştefan Marincea, Delia-Georgeta Dumitraş, Cristina Ghineţ, André-Mathieu Fransolet, Frédéric Hatert, and Mélanie Rondeaux (2011) GEHLENITE FROM THREE OCCURRENCES OF HIGH-TEMPERATURE SKARNS, ROMANIA: NEW MINERALOGICAL DATA. Canadian Mineralogist, 49:1001-1014.
    [Gehlenite] Marincea, S., Dumitraş. D-G., Ghinet, C, Fransolet, A.-M., Hatert, F. & Rondeaux, M. (2011): Gehlenite from three occurrences of high-temperature skarns, Romania: new mineralogical data. Canadian Mineralogist. 49, 1001-1014
    • Harghita Co.
      • Odorheiu Secuiesc (Székelyudvarhely; Oderhellen)
        • Racoş (Racoşu de Jos)
    [Åkermanite] Szakáll, S. & Kristály, F., Eds. (2010): Mineralogy of Székelyland, Eastern Transylvania, Romania. Csík County Nature and Conservation Society, Miercurea-Ciuc, Romania, 321 pp.
    • Hunedoara Co.
      • Hunedoara
    [Gehlenite] Canadian Mineralogist: 39: 1435-1453.
    [Gehlenite] Marincea, S., Dumitraş. D-G., Ghinet, C, Fransolet, A.-M., Hatert, F. & Rondeaux, M. (2011): Gehlenite from three occurrences of high-temperature skarns, Romania: new mineralogical data. Canadian Mineralogist. 49, 1001-1014
    [Gehlenite] Martins da Pedra collection
    Russia
     
    • Eastern-Siberian Region
      • Krasnoyarsk Territory (Krasnoyarsk Kray; Krasnoyarskii Krai)
        • Maimecha and Kotui Rivers Basin
    [Åkermanite] Pavel M. Kartashov data
      • Prebaikalia (Pribaikal'e)
        • Irkutskaya Oblast'
          • Narin-Kunta
    [Gehlenite] P.M. Kartashov data; Armbruster, T., Lazic, B., Gfeller, F., Galuskin, E.V., Galuskina, I.O., Savelyeva, V.B., Zadov, A.E., Pertsev, N.N., Dzierżanowski, P. (2011): Chlorine content and crystal chemistry of dellaite from the Birkhin gabbro massif, Eastern Siberia, Russia. Mineralogical Magazine, 75, 379-394.
      • Tuva Republic
    [Gugiaite] Tony Nikischer
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
    [Åkermanite] www.koeln.netsurf.de/~w.steffens/khib.htm
    [Åkermanite]
    Solomon Islands
     
    • Malaita Province
      • Malaita Island (Mala Island)
    Mineralogical Magazine,1980, VOL. 43, PP. 587-96
    South Africa
     
    • Mpumalanga Province
      • Eastern Bushveld Complex
        • Lydenburg District
    [Åkermanite] Minerals of South Africa
    • Northern Cape Province
      • Kalahari manganese fields
        • Hotazel
    [Åkermanite] [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
    Sweden
     
    • Medelpad
      • Timrå
    [Åkermanite] Sandström, F., Binett, T., Wiklund, C. & Vikström, J. (2010): Alnöområdets geologi och mineralogi. Litiofilen. 27 (2) :14-42
    Tanzania
     
    • Arusha Region
    [Alumoåkermanite] IMA website - Dec.2008 approvals
    The Moon
    J. Frondel (2009), Lunar Mineralogy, Wiley Interscience
    Uganda
     
    • Kabarole District
    [Gehlenite] Barker, D.S. and Nixon, P.H. (1989) High-Ca, low-alkali carbonatite volcanism at Fort Portal, Uganda. Contributions to Minralogy and Petrology.: 103: 166-177.
    UK
     
    • Northern Ireland
      • Co. Antrim
        • Glenoe
    [Åkermanite] P. A. Sabine, M. T. Styles and B. R. Young (1985) The Nature and Paragenesis of Natural Bredigite and Associated Minerals from Carneal and Scawt Hill, Co. Antrim. Mineralogical Magazine 49:663-670.
        • Larne
    [Gehlenite] American Mineralogist: 33: 786
    [Åkermanite] Tindle, A.G. (2008) Minerals of Britian and Ireland
      • North West Highlands (Argyllshire)
        • Ardnamurchan
    [Åkermanite] Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols; Mineralogical Magazine 1965 34 : 1-15.
      • North West Highlands (Inverness-shire)
        • Isle of Muck
    [Gehlenite] Tilley, C.E. (1947) The gabbro-limestone contact zone of Camas Mor, Muck, Inverness-shire. Comptes Rendus de la Société geologique de Finlande, No. 140, 97–105.
    USA
     
    • California
      • Inyo Co.
        • Darwin District
          • Darwin
    [Gehlenite] Am Min (1962) 47:1003-1005
        • Death Valley National Park
          • Panamint Mts (Panamint Range)
            • Ubehebe District
    [Gehlenite] Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 259.
      • Riverside Co.
        • Crestmore
          • Crestmore quarries
            • Sky Blue Hill
    [Gehlenite] Larsen, Esper Signius & William F. Foshag (1921), Merwinite, a new calcium magnesium orthosilicate from Crestmore, California: American Mineralogist:6: 144; Woodford, A.O., Crippen, R.A., and Garner, K.B. (1941) Section Across Commercial Quarry, Crestmorre, California. American Mineralogist: 26: 352-381; Woodford, A.O. (1943), Crestmore minerals: California Division Mines Report 39: 358; Burnham, C. W. (1959), Contact metamorphism of magnesian limestones at Crestmore, California Geological Society of America Bulletin: 70: 880; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 494.
    [Gehlenite] Woodford, A.O., Crippen, R.A., and Garner, K.B. (1941) Section Across Commercial Quarry, Crestmore, California. American Mineralogist: 26: 352-381.
    [Gehlenite] Woodford, A.O., Crippen, R.A., and Garner, K.B. (1941) Section Across Commercial Quarry, Crestmorre, California. American Mineralogist: 26: 352-381.
    [Gehlenite] Shannon, Earl Victor (1922), Velarsenite from a new locality in Tulare County, California: US National Museum Proceedings: 60, art. 22, 4 pp.:
    • Colorado
      • Gunnison Co.
        • White Earth District (Powderhorn District)
    [Åkermanite] "Minerals of Colorado, updated & revised", p. 17, by Eckel, Edwin B., 1997
    • Illinois
      • Vermilion Co.
        • Danville
          • Hegeler
    [Hardystonite] Piatak, N. M. & Seal, R. R., II (2010): Mineralogy and the release of trace elements from slag from the Hegeler Zinc smelter, Illinois (USA). Applied Geochemistry, 25, 302-320
    • Maine
      • Oxford Co.
        • Stoneham
    [Gehlenite] Bastin, Edson Sunderland (1911) Geology of the pegmatites and associated rocks of Maine, including feldspar, quartz, mica, and gem deposits. USGS Bulletin 445.
    • Montana
      • Petroleum Co.
    Gobla, M.J. (2012) Montana mineral locality index. Rocks & Minerals, 87, #3, 208-240.
    • New Jersey
      • Sussex Co.
        • Franklin Mining District
          • Franklin
    [Hardystonite] Palache(1935):94; Dunn(1995):Pt3:411-412.
    [Hardystonite] Weissman purchased specimen
    • New Mexico
      • Luna Co.
        • Camel Mountain-Eagle Nest District
    [Gehlenite] NMBGMR Open-file Report OF-459
    [Gehlenite] Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols
    [Gehlenite] Northrop, Minerals of New Mexico, 3rd rev. ed., 1996
    • New York
      • Essex Co.
        • Keene
          • Cascade Mountain
    [Åkermanite] EOS: 60: 423.; Contrib. Mineral. Petrol. 74, 143-152 (1980)
    • Texas
      • Culberson Co.
        • Apache Peak area
    [Åkermanite] Rocks & Minerals: 66(3): 196-224.
      • Uvalde Co.
    [Gehlenite]
    • Virginia
      • Highland Co.
    [Gehlenite] Minerals of Virginia, 1990 by R. V. Dietrich
    • Wyoming
      • Campbell Co.
        • Reno Junction
    [Gehlenite] American Mineralogist, Volume 73, pages 1440-1448, 1988
    Mineral and/or Locality
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