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Melilite Group

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Gugiaite
Seula mine (ex Montecatini quarry), Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
© sergio varvello

Show Melilite Group Photos (107)

Formula:

M(XSiO

)

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:

M(XSiO

)

Relationship of Melilite Group to other Species

Group Members:

Åkermanite

Mg(Si

)

Alumoåkermanite

(Ca,Na)

(Al,Mg,Fe

)(Si

)

Ferri-gehlenite

AlSiO

Gehlenite

Al(AlSiO

)

Gugiaite

Be(Si

)

Hardystonite

Zn(Si

)

Okayamalite

B(BSiO

)

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

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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
Tamanghasset Province Tanezrouft Acfer 182 meteorite	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 Beaver Lake	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 Redcap Creek skarn	Rubenach, M.J. and Cuff, C. (1985) Mineral. Mag. 49, 71-75.
South Australia Leigh Creek Leigh Creek coal mine	[Gehlenite] Baker, G. (1953): Transactions of the Royal Society of South Australia, 76, 1-20.

Austria
Burgenland Oberpullendorf Kobersdorf Pauliberg Basalt quarry	[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 Basalt quarry	[Gehlenite] R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
Tyrol North Tyrol Inn valley Brixlegg - Schwaz area Montanwerke Brixlegg (slag locality)	[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. Etinde Mt. (Little 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 Kiglapait intrusion	[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.
Slambang Bay	[Åkermanite] Am Min 85:1595–1605, (2000)
Québec Laurentides Deux-Montagnes RCM Oka Oka complex Bond zone (Quebec Columbium Ltd. and Columbium Mining Products properties)	[Åkermanite] Sabina (1968)
Husereau Hill (Husereau farm)	GOLD, D.P. (1969) The Oka carbonatite and alkaline complex. Guidebook GAC/MAC Annual meeting 1969, 43-62.
Saint-Joseph-du-Lac Oka complex Oka Rare Metals mine	[Åkermanite] Sabina (1968)
Montérégie Brome-Missisquoi RCM Mont Brome	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 Canadian National Railway tunnel	[Gehlenite] Dolan (1923)

China
Anhui Province Huaibei Prefecture Suixi Co. Sanpu ore field Qinlou Au-Cu-(Fe) deposit	[Gehlenite] Yiming Zhao, Yinan Zhang, and Chengsi Bi (1999): Ore Geology Reviews 14, 227-249.
Jiangsu Province Suzhou Prefecture Zhangjiagang Co. Tangqiao Gujia village	[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. Luobusha ophiolite ("Luobusa ophiolite")	[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 Slag locality	[Åkermanite] Pauliš P. Mineralogické lokality okolí Kutné Hory. Kuttna, Kutná Hora 1999. ISBN 80-902719-0-1.
Ústí Region Duchcov (Dux) Želénky	[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 Dobrčice	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 Badloch Quarry	[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 Gabbro Quarry (Bärenstein Quarry)	[Gehlenite] No reference listed
Goslar Astfeld Herzog Julius smelter (slag locality)	[Åkermanite] No reference listed
North Rhine-Westphalia Aachen Stolberg Binsfeldhammer lead smelter (slag locality)	[Åkermanite] Blaß, G. & Graf, H. W. (1995): Neufunde von Schlackenhalden in der nördlichen Eifel (II). Mineralien-Welt, 6 (3), 28-31.
Münsterbusch zinc smelter (slag locality)	[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 Emmelberg	[Gehlenite] Schüller, W., Betz, V., Die Mineralien vom Emmelberg, Lapis 12/1986
Hillesheim Graulay (Graulai; Graulei; Grauley)	[Åkermanite] in the collection of Christof Schäfer
Laach lake volcanic complex Wassenach Pumice quarries	[Gehlenite] Hentschel, G., (1987): Die Mineralien der Eifelvulkane, Weise Verlag, München (second edition)
Mayen Ettringen Bellerberg volcano Caspar quarry	[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 Seekante	[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 Ettringer Feld	[Gehlenite] Hentschel, G. (1961): Seltene Mineralneubildungen in einem Kalksteineinschluß der Lava des Ettringer Bellerberges, Fortschritte Mineralogie, Vol. 39, 345
Mendig Niedermendig Basalt quarries (incl. Michels Quarry; Bous Quarry; Geilen Quarry)	[Gehlenite] Hentschel, G., Die Mineralien der Eifelvulkane, Weise Verlag München, 1983
Polch Ochtendung Wannenköpfe	[Gehlenite] Blass, G., Graf , HW., Die Wannenköpfe bei Ochtendung in der Vulkaneifel und ihre Mineralien, MW 6/1999
Lahn valley Bad Ems District Braubach Lead and silver smelter (slag locality)	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 Copper-Silver smelter (Gottesbelohnung smelter; slag locality)	[Hardystonite] Elmar Lackner collection
Lichtloch 25	[Hardystonite]
Lichtloch 26	[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 Lavrion District slag localities	[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 Klanác Hill	[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 Anjerd Mine	[Gehlenite] Mollai, H., Sharma, R., and Pe-Piper, G. (2009): Ore Geology Reviews 35, 401-414.

Iraq
Qala-Diz (Qala-Dizeh; Qala-Diza) Hero Dupezeh Mt.	[Åkermanite]

Israel
Negev Hatrurim (Hatrurim Basin)	[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.
Hatrurim Formation	[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 Monte Somma	[Åkermanite] [Lapis 1994:5 p.13-23,58]
Pollena - Trocchia area Pollena quarries	[Gehlenite] Russo, M. & Punzo, I. (2004): I minerali del Somma-Vesuvio. AMI, Ed., Cremona, Italy, 320 pp.
Latium Rome Province Bracciano Lake Anguillara	[Gehlenite] Schingaro, E. et al. (2001): Crystal chemistry of Kimzeyite from Anguillara, Mts. Sabatini, Italy, European Journal of Mineralogy, Vol. 13, 749-759
Rome Stracciacappe caldera	[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 Vallerano Quarries	[Gehlenite]
Sacrofano Caldera Campagnano di Roma Mt Cavalluccio	[Åkermanite]
Magliano Romano Fosso Attici	[Gehlenite] Stoppani, F.S. & Curti, E. (1982): I minerali del Lazio. Editoriale Olimpia, Firenze, 291 pp.
Sacrofano Biachella Valley	[Åkermanite] Vik Vanrusselt Collection
Viterbo Province Làtera volcano Gradoli Poggio Pinzo	- Signoretti, E. & Bosco, P. (2001): Le cave di Gradoli e Onano. Il Cercapietre, 1/2-2001, 10-25
Montalto di Castro Pietra Massa Locality Campomorto Quarry	[Gehlenite] Passaglia, E. & Turconi, B. (1982): Silicati ed altri minerali di Montalto di Castro - VT. Rivista Mineralogica Italiana, 4/1982, 97-110.
Vico Lake	[Gehlenite] Lapis 28(12), 19-28 (2003)
Piedmont Torino Province Canavese District Chiusella Valley Traversella Traversella Mine ?	[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 Locatelli Quarry	[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.
Seula mine (ex Montecatini quarry)	[Gugiaite] American Mineralogist, 84(5-6), 782-789
Sardinia Medio Campidano Province Arbus Montevecchio Mines	[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 Monzoni Mts	[Gehlenite] J. N. Fuchs (1815) J. Phys. Chem. (Schweigger), 15, 377
Selle Lake area	[Gehlenite] De Michele, V. (1974). Guida mineralogica d'Italia. Istituto Geografico De Agostini, Novara, 2 vol.
Toal de la Foia	[Gehlenite] De Michele, V. (1974). Guida mineralogica d'Italia. Istituto Geografico De Agostini, Novara, 2 vol.
Toal della Fassaite	[Gehlenite] De Michele, V. (1974). Guida mineralogica d'Italia. Istituto Geografico De Agostini, Novara, 2 vol.
Toal della Traversellite	[Gehlenite] Exel, R. (1987): Guida mineralogica del Trentino e del Sudtirolo. Athesia, Bolzano, 204 pp.
Fiemme Valley Canzoccoli (Mt: La Forcella) Predazzo	[Gehlenite] De Michele, V. (1974). Guida mineralogica d'Italia. Istituto Geografico De Agostini, Novara, 2 vol.
Tuscany Grosseto Province Pitigliano Case Collina (Toscopomici quarry)	[Gehlenite] Liotti L., 1991. I minerali dei vulcani laziali a Pitigliano (Grosseto). Riv. Mineral. Ital., 15: 121-139.
Umbria Perugia Province Spoleto Colle Fabbri	[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) Yuge Island	[Gugiaite] Matsubara, S. (2002): The Mineral Species of Japan, p27
Honshu Island Chubu Region Gifu Prefecture Ena City Kawai mine ?	[Gehlenite] Excalibur Mineral Co. specimens
Chugoku Region Hiroshima prefecture Hiba-gun Kushiro	[Gehlenite] Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)
Okayama Prefecture Takahashi City Bitchu-cho (Bicchu-cho) Fuka mine	[Gehlenite] Mineralogical Record: 27: 304.; Journal of Mineralogical and Petrological Sciences Vol. 99 (2004) , No. 2 April 67-71
Shimane Prefecture Hamada City Hamada alkaline volcanics	[Åkermanite] The Mineral Species of Japan (5th ed) Matsubara
Tohoku Region Fukushima Prefecture Koriyama	[Gehlenite] Matsuyama, F. (2001)
Iwate Prefecture Esashi City Akagane mine	[Gehlenite] Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)
Kamaishi City Kamaishi mine	[Gehlenite] Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)

Kenya
Coast Province Mrima Hill	Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
Nyanza Province Rangwa complex	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 Kangankunde hill	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 Encantada Pico	[Gehlenite] Mineralogical Magazine 1964 33 : 841-852
Durango Mun. de Cuencamé Velardeña District Velardeña Velardeña Mine	[Gehlenite] Panczner (1987): 206.

Morocco
Meknès-Tafilalet Region Er Rachidia Province Erfoud (Erfud) Rissani NWA 1934 CV3 Carbonaceous chondrite meteorite	[Gehlenite] Caltech, photomicrograph by Chi Ma.

Namibia
Otjikoto (Oshikoto) Region Tsumeb Tsumeb smelter (slag locality)	[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 Tokatoka	[Gehlenite] Mason, B. (1957): Larnite, scawtite, and hydrogrossular from Tokatoka, New Zealand. American Mineralogist 42, 379-392.

Norway
Aust-Agder Arendal Arendal Iron Mines	[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 Flekkeren	[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
Comet Wild 2 (Comet 81P)	[Gehlenite] Gornitz, V. (2007) Hot & cold origins: the mineralogy of a comet. Mineral News, 23, #1, 1-4.

Palestine
West Bank Hatrurim Formation Nabi Musa	[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 Zinc smelter (slag locality)	[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 Ciclova (Csiklova)	[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.
Oraviţa Skarns	[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) Basalt quarry	[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 Cornet Hill	[Gehlenite] Canadian Mineralogist: 39: 1435-1453.
Magureaua Vatei	[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
Vata de Sus	[Gehlenite] Martins da Pedra collection

Russia
Eastern-Siberian Region Krasnoyarsk Territory (Krasnoyarsk Kray; Krasnoyarskii Krai) Maimecha and Kotui Rivers Basin Odikhincha massif	[Åkermanite] Pavel M. Kartashov data
Prebaikalia (Pribaikal'e) Irkutskaya Oblast' Narin-Kunta Birkhin (Ozernovskii) gabbro massif	[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 Dugdu Alkaline Massif	[Gugiaite] Tony Nikischer
Northern Region Murmanskaja Oblast' Kola Peninsula Khibiny Massif	[Åkermanite] www.koeln.netsurf.de/~w.steffens/khib.htm
Kovdor Massif	[Åkermanite]

Solomon Islands
Malaita Province Malaita Island (Mala Island) Kimberlite locality	Mineralogical Magazine,1980, VOL. 43, PP. 587-96

South Africa
Mpumalanga Province Eastern Bushveld Complex Lydenburg District Hendriksplaats Farm	[Åkermanite] Minerals of South Africa
Northern Cape Province Kalahari manganese fields Hotazel Wessels Mine (Wessel's Mine)	[Åkermanite] [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]

Sweden
Medelpad Timrå Söråker	[Åkermanite] Sandström, F., Binett, T., Wiklund, C. & Vikström, J. (2010): Alnöområdets geologi och mineralogi. Litiofilen. 27 (2) :14-42

Tanzania
Arusha Region Mt. Oldoinyo Lengai (Ol Doinyo Lengai)	[Alumoåkermanite] IMA website - Dec.2008 approvals

The Moon	J. Frondel (2009), Lunar Mineralogy, Wiley Interscience


Uganda
Kabarole District Fort Portal	[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 Carneal	[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 Scawt Hill	[Gehlenite] American Mineralogist: 33: 786
Scotland	[Åkermanite] Tindle, A.G. (2008) Minerals of Britian and Ireland
North West Highlands (Argyllshire) Ardnamurchan Kilchoan	[Åkermanite] Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols; Mineralogical Magazine 1965 34 : 1-15.
North West Highlands (Inverness-shire) Isle of Muck Camas Mor	[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 North of Darwin	[Gehlenite] Am Min (1962) 47:1003-1005
Death Valley National Park Panamint Mts (Panamint Range) Ubehebe District East of Lost Burro Spring	[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 Commercial quarry	[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.
Lone Star Quarry	[Gehlenite] Woodford, A.O., Crippen, R.A., and Garner, K.B. (1941) Section Across Commercial Quarry, Crestmore, California. American Mineralogist: 26: 352-381.
Wet Weather Quarry	[Gehlenite] Woodford, A.O., Crippen, R.A., and Garner, K.B. (1941) Section Across Commercial Quarry, Crestmorre, California. American Mineralogist: 26: 352-381.
Tulare Co.	[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) Iron Hill (Iron Hill carbonatite complex)	[Åkermanite] "Minerals of Colorado, updated & revised", p. 17, by Eckel, Edwin B., 1997
Illinois Vermilion Co. Danville Hegeler Hegeler Zinc smelter (slag locality)	[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 Lord Hill Quarry	[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. Winnett sill	Gobla, M.J. (2012) Montana mineral locality index. Rocks & Minerals, 87, #3, 208-240.
New Jersey Sussex Co. Franklin Mining District Franklin Franklin Mine	[Hardystonite] Palache(1935):94; Dunn(1995):Pt3:411-412.
Parker Mine (Parker shaft)	[Hardystonite] Weissman purchased specimen
New Mexico Luna Co. Camel Mountain-Eagle Nest District Prospect Hill prospects	[Gehlenite] NMBGMR Open-file Report OF-459
Tres Hermanas District	[Gehlenite] Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols
Victorio District	[Gehlenite] Northrop, Minerals of New Mexico, 3rd rev. ed., 1996
New York Essex Co. Keene Cascade Mountain Cascade Slide	[Åkermanite] EOS: 60: 423.; Contrib. Mineral. Petrol. 74, 143-152 (1980)
Texas Culberson Co. Apache Peak area Marble Canyon Mine (Texas Agricultural Aggregates Quarry)	[Åkermanite] Rocks & Minerals: 66(3): 196-224.
Uvalde Co. Taylor Hills	[Gehlenite]
Virginia Highland Co. Hightown	[Gehlenite] Minerals of Virginia, 1990 by R. V. Dietrich
Wyoming Campbell Co. Reno Junction Durham Ranch	[Gehlenite] American Mineralogist, Volume 73, pages 1440-1448, 1988

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