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Aeschynite

A synonym

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Aeschynite-(Y)

Lohning quarry, Rauris, Zell am See District, Salzburg, Austria

Aeschynite-(Ce)

Lohning quarry, Rauris, Zell am See District, Salzburg, Austria

Aeschynite-(Nd)

East Mine, Bayan Obo deposit, Bayan Obo mining district, Baotou City, Inner Mongolia, China

Aeschynite-(Y)

Lohning quarry, Rauris, Zell am See District, Salzburg, Austria

Aeschynite-(Ce)

Lohning quarry, Rauris, Zell am See District, Salzburg, Austria

Aeschynite-(Nd)

East Mine, Bayan Obo deposit, Bayan Obo mining district, Baotou City, Inner Mongolia, China

Aeschynite-(Y)

Lohning quarry, Rauris, Zell am See District, Salzburg, Austria

Aeschynite-(Ce)

Lohning quarry, Rauris, Zell am See District, Salzburg, Austria

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About AeschyniteHide

Name:

From the Greek αισχύνη ("aeschyne") for "shame", alluding to the fact that early chemists had difficulty with separations of titanium from zirconium in some samples.

Synonym of:

Aeschynite-(Ce), Aeschynite-(Nd), Aeschynite-(Y), Aeschynite-(Y), Tantalaeschynite-(Y)

A group of rare-earth, titanium, rarely niobium and tantalum oxide-hydroxide minerals. Localities listed are for undifferentiated members of the group.
The most commmon members are Aeschynite-(Ce) and Aeschynite-(Y).

See also Aeschynite Group.

Visit gemdat.org for gemological information about Aeschynite.

Unique IdentifiersHide

Mindat ID:

Long-form identifier:

mindat:1:1:40:2

Similar NamesHide

Aeschynite-(Ce)	A valid IMA mineral species - grandfathered	Ce(TiNb)O₆
Aeschynite-(Ce)-Aeschynite-(Y) Series	A solid-solution series between two end-member minerals
Aeschynite-(Ce)-Nioboaeschynite-(Ce) Series	A solid-solution series between two end-member minerals
Aeschynite-(Nd)	A valid IMA mineral species	Nd(TiNb)O₆
Aeschynite-(Y)	A valid IMA mineral species - grandfathered	Y(TiNb)O₆
Aeschynite-(Y)-Tantalaeschynite-(Y) Series	A solid-solution series between two end-member minerals

Chemical AnalysisHide

Oxide wt%:

	1
Nb₂O₅	17.99 %
Ta₂O₅	0.89 %
TiO₂	32.91 %
SnO₂	0.12 %
SiO₂	0.38 %
UO₂	4.01 %
ThO₂	7.69 %
(Y,Er)₂O₃	28.76 %
(Ce,La,Di)₂O₃	1.97 %
FeO	1.48 %
MnO	0.27 %
CaO	1.02 %
PbO	0.06 %
MgO	0.04 %
Na₂O	0.22 %
K₂O	0.19 %
H₂₀	1.88 %
Total:	99.88 %

Sample references:

ID	Type	Locality	Reference	Notes
1	Type Specimen	Urstad Feldspar Mine, Hidra, Flekkefjord, Agder, Norway	Brøgger, W. C. (1906) Die Mineralien der Südnorwegischen Granit-Pegmatitgänge - I. Niobate, Tantalate, Titanate und Titanoniobate [The minerals of the South Norwegian granite pegmatite dikes - I. Niobates, tantalates, titanates and titanoniobates]. Videnskabsselskabet i Christiania Skrifter - I Mathematisk-naturvidenskabelig klasse, 1906 (6). 1-162	Wet-chemical analysis by Blomstrand (in Brøgger 1879)

Crystallographic forms of AeschyniteHide

Crystal Atlas:

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Aeschynite no.2 - {110} - Goldschmidt (1913-1926)

Aeschynite no.7 - {011} - Goldschmidt (1913-1926)

Aeschynite no.14 - {010} - Goldschmidt (1913-1926)

3d models and HTML5 code kindly provided by www.smorf.nl.

Crystal StructureHide

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Year	Locality	Temp (K)
0006811	Aeschynite-(Y)	Bonazzi P, Menchetti S (1999) Crystal chemistry of aeschynite-(Y) from the Western Alps: residual electron density on difference-Fourier map European Journal of Mineralogy 11 1043-1049	1999	western Alps	293
0006810	Aeschynite-(Y)	Bonazzi P, Menchetti S (1999) Crystal chemistry of aeschynite-(Y) from the Western Alps: residual electron density on difference-Fourier map - note: O1 z coordinate altered to match reported bond lengths European Journal of Mineralogy 11 1043-1049	1999	western Alps	293
0006809	Aeschynite-(Y)	Bonazzi P, Menchetti S (1999) Crystal chemistry of aeschynite-(Y) from the Western Alps: residual electron density on difference-Fourier map European Journal of Mineralogy 11 1043-1049	1999	western Alps	293
0006808	Aeschynite-(Y)	Bonazzi P, Menchetti S (1999) Crystal chemistry of aeschynite-(Y) from the Western Alps: residual electron density on difference-Fourier map European Journal of Mineralogy 11 1043-1049	1999	western Alps	293
0006807	Aeschynite-(Y)	Bonazzi P, Menchetti S (1999) Crystal chemistry of aeschynite-(Y) from the Western Alps: residual electron density on difference-Fourier map European Journal of Mineralogy 11 1043-1049	1999	western Alps	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Aeschynite-(Y)'
loop_
_publ_author_name
'Bonazzi P'
'Menchetti S'
_journal_name_full 'European Journal of Mineralogy'
_journal_volume 11 
_journal_year 1999
_journal_page_first 1043
_journal_page_last 1049
_publ_section_title
;
 Crystal chemistry of aeschynite-(Y) from the Western Alps:
 residual electron density on difference-Fourier map
 Sample: VV
;
_database_code_amcsd 0006811
_chemical_compound_source 'western Alps'
_chemical_formula_sum 'Y.65 La.001 Ce.005 Pr.001 Nd.015 Sm.017 Gd.042 Dy.042 Er.023 Yb.018 Th.07 U.04 Ca.01 Fe.03 Ti1.41 Nb.36 Ta.22 W.05 O6'
_cell_length_a 11.031
_cell_length_b 7.448
_cell_length_c 5.188
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 426.240
_exptl_crystal_density_diffrn      5.574
_symmetry_space_group_name_H-M 'P n m a'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,z'
  '-x,1/2+y,-z'
  '1/2-x,1/2+y,1/2+z'
  '1/2+x,1/2-y,1/2-z'
  '1/2+x,y,1/2-z'
  '1/2-x,-y,1/2+z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
YA   0.45290   0.25000   0.04020   0.65000   0.01210
LaA   0.45290   0.25000   0.04020   0.00100   0.01210
CeA   0.45290   0.25000   0.04020   0.00500   0.01210
PrA   0.45290   0.25000   0.04020   0.00100   0.01210
NdA   0.45290   0.25000   0.04020   0.01500   0.01210
SmA   0.45290   0.25000   0.04020   0.01700   0.01210
GdA   0.45290   0.25000   0.04020   0.04200   0.01210
DyA   0.45290   0.25000   0.04020   0.04200   0.01210
ErA   0.45290   0.25000   0.04020   0.02300   0.01210
YbA   0.45290   0.25000   0.04020   0.01800   0.01210
ThA   0.45290   0.25000   0.04020   0.07000   0.01210
UA   0.45290   0.25000   0.04020   0.04000   0.01210
CaA   0.45290   0.25000   0.04020   0.01000   0.01210
FeA   0.45290   0.25000   0.04020   0.03000   0.01210
TiB   0.35790   0.50770   0.54360   0.70500   0.01220
NbB   0.35790   0.50770   0.54360   0.18000   0.01220
TaB   0.35790   0.50770   0.54360   0.11000   0.01220
WB   0.35790   0.50770   0.54360   0.00500   0.01220
WC   0.17100   0.25000   0.59500   0.04000   0.01900
O1   0.28860   0.43380   0.88030   1.00000   0.02100
O2   0.52600   0.45550   0.73790   1.00000   0.01900
O3   0.61690   0.25000   0.31750   1.00000   0.01800
O4   0.35480   0.25000   0.43370   1.00000   0.02000

Synonyms of AeschyniteHide

Other Language Names for AeschyniteHide

German:Aeschynit
Äschynit
Dystomes Melanerz
Eschinit
Eschynit

Norwegian:Æschynitt

Simplified Chinese:易解石

Spanish:Aechynita
Aeschynita
Aschynita
Eschinita
Eschynita

Varieties of AeschyniteHide

Alumo-aeschynite

An aluminian variety of Aeschynite.

Common AssociatesHide

Associations Based on Photo Data:

7 photos of Aeschynite associated with Anatase	TiO₂
2 photos of Aeschynite associated with Allanite Group	(A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)
1 photo of Aeschynite associated with Titanite	CaTiO(SiO₄)
1 photo of Aeschynite associated with Phenakite	Be₂SiO₄
1 photo of Aeschynite associated with 'Rock Crystal'	SiO₂
1 photo of Aeschynite associated with Hematite	Fe₂O₃
1 photo of Aeschynite associated with Dolomite	CaMg(CO₃)₂
1 photo of Aeschynite associated with Rutile	TiO₂
1 photo of Aeschynite associated with Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
1 photo of Aeschynite associated with 'Byssolite'	AX₂Z₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂

Other InformationHide

Health Risks:

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 AeschyniteHide

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References for AeschyniteHide

Reference List:

Berzelius, J. (1830) Mineralogie: Aeschynit. Jahres-Bericht über die Fortschritte der Physischen Wissenschaften: 9: 182-209

Palache, Charles, Berman, Harry, Frondel, Clifford (1944) The System of Mineralogy (7th ed.) Vol. 1 - Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, New York.pp.793-797

Yang, Z., Song, R., Tao, K., Zhang, P. (2003) Rare earth compositional variation of aeschynite group minerals. Journal of the Chinese Rare Earth Society: 21: 716-720.

Localities for AeschyniteHide

Showing 410 localities.

This 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.

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Locality ListHide

- This locality has map coordinates listed.

- This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality.

- Good crystals or important locality for species.

- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). ~~Struck out~~ - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.


Algeria
Djanet Province Djanet District ⓘ Djilouet granite suite	Oulebsir et al. (2021)

Angola
Huíla Province Quilengues ⓘ Mount Bonga	ZHENG et al. (2014) +1 other reference

Australia
Western Australia Halls Creek Shire ⓘ Cummins Range complex (Minneroo Pool)	[Aeschynite-(Ce)] Downes et al. (2014)

Austria
Lower Austria Krems-Land District Weinzierl am Walde ⓘ Blocherleitengraben ?	[Aeschynite-(Y)] Kolitsch (2017)
Neunkirchen District Gloggnitz Schlossberg ⓘ Schlossberg quarry	[Aeschynite-(Y)] Kolitsch et al. (SXRD and EDS) +1 other reference
ⓘ Semmering Base Tunnel	[Aeschynite-(Y)] Kolitsch et al. (2018)
Wiener Neustadt-Land District Wiesmath ⓘ Sperkerriegel	[Aeschynite-(Y)] Auer (2026)
Salzburg St. Johann im Pongau District Bad Gastein Böckstein ⓘ Moos	[Aeschynite-(Y)] U. Kolitsch (SXRD-analysis) +1 other reference
ⓘ Municipal quarry (Dick quarry)	[Aeschynite-(Y)] Strasser (1989)
ⓘ Riepler building	[Aeschynite-(Y)] Strasser (1989)
Naßfeld valley ⓘ Road cuts	C.Auer (2026)
Tamsweg District Muhr Schellgaden ⓘ Gestell quarry (Ofen quarry)	Auer (1995)
ⓘ Talc mine ?	Strasser (1989)
Sankt Michael im Lungau Fell ⓘ Fellergraben	Strasser (1989)
Zell am See District Bramberg am Wildkogel Breitfuß - Großer Finagl area ⓘ Kesselfall	Strasser (1989)
ⓘ Leffler source	[Aeschynite-(Y)] Frank Schimak collection
Nasenkopf mountain Leckbachgraben ⓘ Emerald deposit	[Aeschynite-(Y)] Strasser (1989)
Hollersbach im Pinzgau ⓘ Leckbachscharte	[Aeschynite-(Ce)] Anthony et al. (1997)
ⓘ Schafkopf east slope	Strasser (1989)
Krimml Rainbach valley ⓘ Roßkar - Nördliche Zillerscharte area	[Aeschynite-(Y)] Steiner&Melcher (2020)
Neukirchen am Großvenediger Abichl Alp - Beryller area ⓘ Beryller	[Aeschynite-(Y)] Horst Schabereiter collection
ⓘ Beryller - south of ("Beryller")	[Aeschynite-(Y)] J. Brugger et al. (2017)
Ascham Alp - Breitfuß - Sonntagskopf area ⓘ Ascham Alp bridge	Strasser (1989)
Hopffeld area ⓘ Hopffeldboden	[Aeschynite-(Y)] Preite D. (1986)
ⓘ Hopffeldgraben	[Aeschynite-(Y)] Weiß et al. (1989) +1 other reference
Knappenwand area ⓘ Neuberg	[Aeschynite-(Y)] - (n.d.)
ⓘ Mitterkopf east slope	Strasser (1989)
ⓘ Notklamm	Strasser (1989)
Rauris Grieswies - Krumlkeeskopf area Grieswies-Schafkar ⓘ Erfurt way	[Aeschynite-(Y)] Neschen (n.d.)
ⓘ Kaiserer quarry (Deisl quarry)	[Aeschynite-(Ce), Aeschynite-(Y)] Fischer (1977) +1 other reference
ⓘ Lohning quarry (Lohninger quarry)	[Aeschynite-(Ce), Aeschynite-(Y)] Anthony et al. (1997)
Styria Murtal District Pusterwald Spodumene pegmatites ⓘ Hohenwart	Mali (2004)
Tyrol Schwaz District Finkenberg Schrammacher ⓘ Oberschrammach glacier	[Aeschynite-(Y)] Folie et al. (1999)
ⓘ Schrammach ridge	Folie et al. (1999)
Mayrhofen ⓘ Gunggl valley (In der Gunggl)	[Aeschynite-(Y)] Exel (1993)
ⓘ Melker Scharte	Göltl (1988)

Brazil
Bahia ⓘ Caetité	A.M.D.V. Chaves (2005)
Paraíba São José do Sabugi ⓘ Raposa pegmatite	[Tantalaeschynite-(Y)] Rocks & Minerals (Jan.2000) +1 other reference

Burkina Faso
Cascades Region Comoé Province Mangodara Department ⓘ Unnamed pegmatites	Bonzi et al. (2023)

Canada
British Columbia Golden Mining Division ⓘ KIN property	[Aeschynite-(Ce)]
Kamloops Mining Division Blue River carbonatites ⓘ Fir carbonatite	Chudy T et al. (2014)
ⓘ Upper Fir carbonatite	[Aeschynite-(Ce)]
New Brunswick Queens Co. Welsford Anorogenic Igneous Complex ⓘ McKeel Lake pegmatite	[Aeschynite-(Y)] Seidler et al. (2005)
Newfoundland and Labrador Labrador ⓘ Red Wine Alkaline Complex	[Aeschynite-(Ce)] GSC locality database
Northwest Territories Blachford Lake alkaline complex ⓘ Thor Lake syenite complex	Sheard et al. (2012)
North Slave Region Blachford Lake alkaline complex Thor Lake syenite complex ⓘ Nechalacho deposit	Pinckston et al. (1995) +1 other reference
Nova Scotia Colchester Co. ⓘ Debert Lake prospect	Ersay (2020) +1 other reference
Cumberland Co. ⓘ Wentworth plutonic complex	[Aeschynite-(Y)] Papoutsa et al. (2013)
Ontario Haliburton County Highlands East Township Monmouth Township ⓘ Bear Lake diggings	[Aeschynite-(Y)]
Hastings County Hastings Highlands Municipality Herschel Township ⓘ Patterson occurrence	[Aeschynite-(Y)] Ontario Ministry of Northern ... +1 other reference
Nipissing District Butt Township ⓘ River's occurrence (Yankee Dam)	[Aeschynite-(Y)] MDI Number: MDI31E11NE00070
Parry Sound District Henvey Township ⓘ Ambeau Mine	Traill (1983)
Renfrew County Brudenell-Lyndoch-and-Raglan Lyndoch Township ⓘ Quadeville area	[Aeschynite-(Y)]
ⓘ Beryl Pit	[Aeschynite-(Ce), Aeschynite-(Nd), Aeschynite-(Y)] ontariominerals.com
ⓘ Rose Quartz Pit	Piilonen et al. (2024)
Québec Nord-du-Québec Nunavik ⓘ Eldor Carbonatite Complex (Eldor carbonatite)	[Aeschynite-(Nd), Aeschynite-(Y)] Beland et al. (2021)

China
Gansu Jiuquan Aksai Co. ⓘ Yushishan Nb–Ta ore deposit	Yu et al. (2023)
Guangxi Guilin Ziyuan Co. Miaoershan-Yuechengling ore field Yuechengling batholith Mao’antang Nb-Ta deposit ⓘ Mao’antang ore block	Zhao et al. (2025)
Hubei Shiyan Zhushan Co. ⓘ Miaoya carbonatite	[Aeschynite-(Ce)]
Hunan Chenzhou Yizhang Co. Dongpo ore field ⓘ Shizhuyuan Mine	[Tantalaeschynite-(Y)] Yihong Sun and Xiangmei Ren (1986)
Yongzhou Jianghua Co. Guposhan Sn-polymetallic ore field ⓘ Guposhan REE deposit	[Aeschynite-(Ce)] Zhang Peishan et al. (1996)
Inner Mongolia Alxa League (Alashan Prefecture) Alxa Right Banner (Alashan Youqi) ⓘ Taohualashan REE deposit (Taohuashan REE deposit)	[Aeschynite-(Ce)] Bai et al. (1985) +1 other reference
Baotou City Bayan Obo mining district ⓘ Bayan Obo deposit	[Aeschynite-(Ce), Aeschynite-(Nd)] Zhuming Yang et al. (2003) +4 other references
ⓘ East Mine	[Aeschynite-(Ce), Aeschynite-(Nd)] Liu et al. (2022)
ⓘ Eastern contact zone	Yi-Li et al. (2023) +1 other reference
ⓘ H9 litho-unit	Xie et al. (2026)
ⓘ Main pit	[Aeschynite-(Ce)] Xue et al. (2026)
Tongliao City (Tongliao Prefecture) Jarud Banner (Zalute Co.) ⓘ Baerzhe complex	[Aeschynite-(Y)] Wu et al. (2021) +1 other reference
Jiangxi Ganzhou Anyuan Co. ⓘ Shitouping Ion-Adsorption Heavy REE Deposit	[Aeschynite-(Y)] He et al. (2026)
Longnan Co. Longnan REE deposits ⓘ Zudong Mine	[Aeschynite-(Y)] Deqian Chen et al. (1994) +1 other reference
Quannan Co. ⓘ Dajishan Mine (Tachishan Mine)	Jianping Liu and Jiande Teng (2007)
Yichun Yuanzhou District ⓘ Wugongshan complex	[Aeschynite-(Y)] Ma et al. (2026)
Shaanxi Weinan Huayin City ⓘ Huanglongpu Mo-(Pb) deposit	[Aeschynite-(Y)] Dianhao Huang et al. (1984)
Shandong Jining Weishan County ⓘ Weishan Mine (Chisan Mine; Chishan alkaline complex; Xishan Mine; Deposit No. 101)	Orris et al. (2002)
Sichuan Liangshan Yi Dechang County ⓘ Dalucao REE deposit	[Aeschynite-(Ce)] Yang et al. (2006)
Mianning County ⓘ Maoniuping Mine	Orris et al. (2002)
ⓘ Mianxi	Zhang et al. (Eds.) +1 other reference
Xinjiang Bayin'gholin Autonomous Prefecture Ruoqiang Co. (Qakilik Co.; Chaqiliq Co.) Tashidaban Li district ⓘ Kumusayi Li deposit	[Aeschynite-(Y)] Shen et al. (2026)
Hami Prefecture (Kumul Prefecture; Qumul Prefecture) Yizhou District ⓘ Juyuan W deposit	[Aeschynite-(Y)] YIN et al. (2021)
Yunnan Baoshan Tengchong County Caoziwa Pb–Zn deposit ⓘ Dadoushan ore zone	Ouyang et al. (2024)
ⓘ Xiangchunyuan ore zone	Ouyang et al. (2024)

Czech Republic
Liberec Region Liberec District ⓘ Kryštofovo Údolí	[Aeschynite-(Y)] Pauliš P. et al. (Kutna Hora, issue 1)
Olomouc Region Šumperk District Velké Losiny Maršíkov (Marchendorf) ⓘ Lysá hora (Kahlhübel)	[Aeschynite-(Ce)] Chládek Š. (2016)
Vysočina Region Třebíč District ⓘ Klučov	[Aeschynite-(Ce), Aeschynite-(Nd), Aeschynite-(Y)] Pauliš P. et al. (Kutna Hora, issue 1)
ⓘ Kožichovice	[Aeschynite-(Ce), Aeschynite-(Nd), Aeschynite-(Y)] Pauliš P. et al. (Kutna Hora, issue 1)
Slavičky ⓘ Pozd'átky	[Aeschynite-(Ce), Aeschynite-(Nd), Aeschynite-(Y)] Pauliš P. et al. (Kutna Hora, issue 1)
Vladislav ⓘ Pegmatite occurrences	[Aeschynite-(Y)] Pauliš P. et al. (Kutna Hora, issue 1)
Žďár nad Sázavou District Chlumek ⓘ Chlumek pegmatite	[Aeschynite-(Y)] Pauliš P. et al. (Kutna Hora, issue 1)

Egypt
Red Sea Governorate ⓘ Gebel Shalman-Wadi Biarn pegmatites	[Aeschynite-(Y)] Saleh et al. (2026)

Eswatini
Hhohho Region ⓘ Mbabane	[Aeschynite-(Y)] Cassiterite +2 other references

Finland
North Ostrobothnia Pyhäntä ⓘ Lamujärvi area	[Aeschynite-(Y)]
North Savo Siilinjärvi ⓘ Siilinjärvi Mine	[Aeschynite-(Ce)] Yara International

France
Auvergne-Rhône-Alpes Isère Grenoble Saint-Christophe-en-Oisans ⓘ Plan-du-Lac	Valverde J. (1999)
Savoie Albertville La Léchère Bonneval-Tarentaise ⓘ La Baisse	[Aeschynite-(Y)] De Ascençao Guedes et al. (2000)
Celliers ⓘ Grand Pic	De Ascençao Guedes et al. (2000)
ⓘ Pointe du Rozet	De Ascençao Guedes et al. (2000)
ⓘ Pierre Château	[Aeschynite-(Y)] De Ascenção Guedes et al. (2002)
Nouvelle-Aquitaine Pyrénées-Atlantiques Oloron-Sainte-Marie Aramits Ance ⓘ Col d'Etche	[Aeschynite-(Ce)] MONCHOUX P. et al. (2006)
ⓘ Col d'Urdach	[Aeschynite-(Ce)] MONCHOUX P. et al. (2006)
Occitanie Ariège Foix Luzenac ⓘ Trimouns Talc Mine	[Aeschynite-(Y)] Gatel (1990)
Provence-Alpes-Côte d'Azur Alpes-Maritimes Nice Arrondissement Saint-Martin-Vésubie ⓘ Madone des Fenestres (Madone de Fenestre) Valley	[Aeschynite-(Y)] Georges FAVREAU collection & EDX ...

Germany
Bavaria Upper Franconia Wunsiedel im Fichtelgebirge Kirchenlamitz Niederlamitz ⓘ Kleiner Kornberg	Wittern (2001)
Upper Palatinate Neustadt an der Waldnaab District Waidhaus ⓘ Hagendorf	Dill (2009)
Hesse Darmstadt Darmstadt-Dieburg Fischbachtal Lichtenberg ⓘ Altscheuer quarries ?	Belendorff (2021)
Rhineland-Palatinate Mayen-Koblenz Mendig Mendig ⓘ In den Dellen quarries	[Aeschynite-(Ce)] Blass et al. (2006)
ⓘ Thelenberg	[Aeschynite-(Ce)] Blass
Wingertsberg ⓘ Pumice quarries	[Aeschynite-(Ce)] Blass
Pellenz Kruft ⓘ Krufter Ofen	[Aeschynite-(Ce)] Blass et al. (2006)
Saxony Bautzen District Cunewalde Schönberg ⓘ Hölle quarry ?	[Aeschynite-(Y)] Witzke et al. (2008)
Görlitz District ⓘ Königshain	[Aeschynite-(Ce)] Anthony et al. (1997)
ⓘ Jenichen Quarry (Jehnichen Quarry; Jähnichen Quarry)	[Aeschynite-(Y)] Witzke et al. (2013)
ⓘ Quarry 150 m south of the Hochstein	[Aeschynite-(Y)] Witzke et al. (2013)
Thiemendorf ⓘ A4 Highway tunnel	[Aeschynite-(Y)] Witzke et al. (2013)
Vierkirchen ⓘ Döbschütz	[Aeschynite-(Ce)] Anthony et al. (1997)
Thuringia Hildburghausen District Heldburg ⓘ Heldburger Gangschar Volcanic Province	Lippolt (1982) +3 other references
ⓘ Heldburg Phonolite Plug	Lippolt (1982) +3 other references
Saale-Orla District Wurzbach Weitisberga ⓘ Henneberg Quarry	[Aeschynite-(Ce)] Wittern (2001)

Greece
Attica East Attica Lavreotiki Plaka Plaka Mines ⓘ Plaka Mine No. 80	[Aeschynite-(Y)] Rieck et al. (2018)
ⓘ Plaka Porphyry Deposit ("Porphyry Hill") ?	[Aeschynite-(Y)] Uwe Kolitsch (unpublished SEM-EDS analyses)

Hungary
Baranya County ⓘ Mecsek Mountains	Harangi et al. (1993) +4 other references
Borsod-Abaúj-Zemplén County Miskolc District Miskolc ⓘ Lillafüred	[Aeschynite-(Nd), Aeschynite-(Y)] Balassa et al. (2026)

India
Chhattisgarh Dantewada District ⓘ Kawadgaon-Challanpara pegmatite field	Singh et al. (2017)
Telangana Jogulamba Gadwal District Raichur kimberlite field Siddanpalli kimberlite cluster ⓘ SK-2 Kimberlite	[Aeschynite-(Ce)] Xu et al. (2018)
Uttar Pradesh Mirzapur Division Sonbhadra District ⓘ Jaurahi pegmatite	URAM 2014 IAEA p52 +1 other reference
West Bengal Purulia District ⓘ Nawahatu	Baidya et al. (2) +1 other reference

Indonesia
West Sulawesi Province Mamuju Regency ⓘ Adang Volcanic Complex	Sukadana et al. (2022)

Italy
Aosta Valley Courmayeur ⓘ Brenva Glacier	[Aeschynite-(Y)] Piccoli et al. (2007)
ⓘ Miage Glacier	[Aeschynite-(Y)] Piccoli et al. (2007)
ⓘ Pré de Bar Glacier	Piccoli et al. (2007)
ⓘ Triolet Glacier	[Aeschynite-(Y)] Piccoli et al. (2007)
Liguria Savona Province Magliolo ⓘ Costa Balzi Rossi	[Aeschynite-(Y)] Bracco et al. (2006)
Murialdo Pastori ⓘ Pastori Mine	[Aeschynite-(Y)] Castellaro-Vignola
Sassello Veirera ⓘ Rio Stogia	[Aeschynite-(Y)] Martinelli (2013)
Lombardy Sondrio Province Chiesa in Valmalenco ⓘ Alpe Pirlo	[Aeschynite-(Y)] Bedognè et al. (1993)
ⓘ Sissone Valley	[Aeschynite-(Y)] Marchesini et al. (2025) +1 other reference
Villa di Chiavenna ⓘ Canete	[Aeschynite-(Y)] Bedogné et al. (1995)
Varese Province ⓘ Cuasso al Monte	[Aeschynite-(Y)] Guastoni A. +1 other reference
Cavagnano ⓘ Laghetto Quarry	[Aeschynite-(Y)] Guastoni et al. (2004)
Piedmont Cuneo Province ⓘ Argentera Group	[Aeschynite-(Y)] Piccoli et al. (2004)
Bagnolo Piemonte ⓘ Montoso Quarries	[Aeschynite-(Y)] Piccoli (2002) +2 other references
ⓘ Bricco Volti - Monte Ortieul quarrying area	[Aeschynite-(Y)] Piccoli (2002) +2 other references
Entracque ⓘ Cotella Valley	Piccoli (2002) +2 other references
ⓘ Vinadio	Piccoli et al. (2007)
ⓘ Mount Crosa	[Aeschynite-(Y)] Piccoli (2002)
Sant’Anna Valley ⓘ Cima d'Orgials	[Aeschynite-(Y)] Piccoli et al. (2007)
Metropolitan City of Turin Balme Mussa Alp (Pian della Mussa; Piano della Mussa; La Mussa; Lamussa) ⓘ Arnas Valley (Rio Arnas Valley)	[Aeschynite-(Y)] Piccoli et al. (2007)
Luserna San Giovanni ⓘ Ambrasse Quarry ?	[Aeschynite-(Y)] Franco Luca Bonino's collection
ⓘ Seccarezze Quarries	[Aeschynite-(Y)] Finello et al. (2007)
ⓘ Luserna Stone Quarries	[Aeschynite-(Y)] Finello et al. (2007)
Prali ⓘ Crosetto Mine	Bruno Marello collection
Verbano-Cusio-Ossola Province ⓘ Baceno	Lapis (3)
Devero Alp ⓘ Monte Cervandone area	[Aeschynite-(Y)] Anthony et al. (1997)
ⓘ Pizzo Bandiera	[Aeschynite-(Y)] Mineralogical Society of America - ...
Baveno Oltrefiume Mount Camoscio ⓘ Seula mine	[Aeschynite-(Y)] Pezzotta et al. (1999)
Beura-Cardezza ⓘ Beura quarries	[Aeschynite-(Y)] Weiß (1983)
Montecrestese ⓘ ~~Castelluccio Quarry~~	Piccoli et al. (2007)
Omegna Brughiere ⓘ Rio Inferno quarry	[Aeschynite-(Y)] //doi.org/10.57635/MICRO.2025.23.20
Toceno Val di Crana ⓘ Val di Crana pegmatites	[Aeschynite-(Y)] Rivista Mineralogica Italiana (1)
ⓘ Bosco pegmatite	[Aeschynite-(Y)] Guastoni et al. (2019)
Varzo ⓘ Veglia Alp (Alpe Veglia)	[Aeschynite-(Y)] Cuchet et al. (2016)
ⓘ Al Piudel inferior REE-mineralization	[Aeschynite-(Y)] Cuchet et al. (2016)
ⓘ Al Piudel superior REE-mineralization	[Aeschynite-(Y)] Cuchet et al. (2016)
ⓘ Bianco lake REE-mineralization	[Aeschynite-(Y)] Cuchet et al. (2016)
ⓘ Cima delle Piodelle REE-mineralization	[Aeschynite-(Y)] Cuchet et al. (2016) +1 other reference
ⓘ Conca di Boccareccio REE-mineralization	[Aeschynite-(Y)] Cuchet et al. (2016)
Villadossola ⓘ Pianasca Quarry	[Aeschynite-(Y)] Rivista Mineralogica Italiana
Sardinia Metropolitan City of Cagliari Sarroch ⓘ Punta de Su Seinargiu (Su Seinargiu; Su Senargiu)	[Aeschynite-(Y)] Fernando Caboni et al. (2023) +2 other references
Nuoro Province Orosei ⓘ Su Vrangone granite quarry (Scancella Quarry; Su Cuile Bruiatu Quarry)	[Aeschynite-(Y)] SEM-EDS identification
Trentino-Alto Adige/Südtirol South Tyrol Wipptal (Alta Vall'Isarco) Pfitsch (Val di Vizze) Sankt Jakob (San Giacomo) Vizze Pass (Pfitsch Pass; Pfitscher Joch) ⓘ Grawandkofel (Croda Alta)	[Aeschynite-(Y)] Folie K. Rocchetti I. (1999) +1 other reference
ⓘ Wasserfallköpfe	[Aeschynite-(Y)] Buscaroli et al. (1994)
Trento Province Canal San Bovo Vanoi Valley Pralongo ⓘ Pralongo granite quarry (Pralongo Quarry; Grisotto Quarry)	[Aeschynite-(Y)] Ferretti et al. (2015)
Predazzo ⓘ Al Fol quarry (Sacac quarry)	[Aeschynite-(Y)] Vecchi et al. (2013)
Sella Giudicarie Breguzzo San Pietro-Breguzzo Valley Malga Trivena hut ⓘ Marble quarry	[Aeschynite-(Ce)] Gieré et al. (1992)
Veneto Vicenza Province Valdagno Novale Rossati (Contrada Rossati di Sotto) ⓘ Fosse di Novale	Zaccaria et al. (2021)

Japan
Fukushima Prefecture Date District Kawamata Iizaka Village (Iisaka) ⓘ Suishoyama pegmatite (Suishouyama; Suisyoyama; Suishyoyama)	[Aeschynite-(Y)] Nishio-Hamane et al. (2024)
Gifu Prefecture Nakatsugawa City ⓘ Hirukawa	[Aeschynite-(Y)] The Mineral Species of Japan (5th ed)
ⓘ Tawara (Tahara)	Yamada (2004) +1 other reference
Mie Prefecture Mie District Komono town Yunoyama-onsen ⓘ Unnamed pegmatite	[Aeschynite-(Y)] Hiromi Yamasaki collection +1 other reference
Yamanashi Prefecture Kinpuzan mining district Kofu City Kurobera ⓘ Kurobera mine	[Aeschynite-(Y)] The Mineral Species of Japan (5th ed)

Kazakhstan
Karaganda Region Aktogay District ⓘ Beqtau-Ata (Bektau-Ata)	[Aeschynite-(Ce)]
Shymkent City ⓘ Temirshi ring complex	Podolskii et al. (1988) +1 other reference

Madagascar
Bongolava Fenoarivobe District Ambohitromby Commune ⓘ Ambohitromby	[Aeschynite-(Y)] Tiziano Luzi collection & photo ( photo id 1095865)
Itasy Soavinandriana District Amparaky ⓘ Fiadanana pegmatite	[Aeschynite-(Y)] Behier (1963)
Ankisabe ⓘ Ambodivoandelaka	[Aeschynite-(Y)] Guigues (1955)
Mahavelona ⓘ Ambatofotsy pegmatite	[Aeschynite-(Y)] Behier (1963)
Menabe Miandrivazo District ⓘ Dabolava	[Aeschynite-(Y)] Behier (1963)
Vakinankaratra Antsirabe II District Sahanivotry Manandona ⓘ Tomboarivo pegmatite	[Aeschynite-(Y)] Behier (1958) +1 other reference
Betafo District Mahaiza ⓘ Tsaramanga pegmatite	[Aeschynite-(Y)] Behier (1963)

Mexico
Oaxaca San Francisco Telixtlahuaca Municipality San Francisco Telixtlahuaca ⓘ Muerto Mine	[Aeschynite-(Y)] Prol-Ledesma et al. (2012)
Yucatán northwest coastline of the Yucatán peninsula Puerto Chicxulub ⓘ Chicxulub impact structure	[Aeschynite-(Ce), Aeschynite-(Nd)] Wittmann A (2022)

Mongolia
Khovd Province Myangad District ⓘ Khaldzan Buragtag massif	[Aeschynite-(Ce), Aeschynite-(Y)] Pavel M. Kartashov (n.d.) +2 other references

Mozambique
Zambezia Province Mocuba District Mocuba ⓘ Vila Maior pegmatite	[Aeschynite-(Y)] Moiana (2010)

Namibia
Erongo Region Arandis Constituency ⓘ Rössing uranium mine	[Aeschynite-(Ce)] Rio Tinto Group
Kunene Region Khorixas ⓘ Lofdal-Bergville REE deposit	[Aeschynite-(Y)] Harmer et al. (2016)

New Zealand
Southland Region Southland District Stewart Island ⓘ North Red Head	Allibone et al. (2016)

North Korea	[Aeschynite-(Ce)]


Norway
Agder Arendal Stokken ⓘ Mørefjær Feldspar Quarry (Mörefjer)	[Aeschynite-(Y)] Brøgger (1906)
ⓘ Saltrød (Salterö)	[Aeschynite-(Y)] Brøgger (1906)
Birkenes ⓘ Kjelevann	[Aeschynite-(Y)] Butler (1958)
Evje og Hornnes Evjemoen ⓘ Steinsfjellplassen Pegmatite Locality ?	[Aeschynite-(Y)] - (n.d.)
Landsverk ⓘ Landsverk 1 Feldspar Quarry (Jokeli)	[Aeschynite-(Y)] - (n.d.)
Lauvland ⓘ Brattekleiv Feldspar Quarry (Lauvland 04)	[Aeschynite-(Y)] Hamza Ilhan Sito Collection
Flekkefjord ⓘ Hidra	[Aeschynite-(Ce)] Anthony et al. (1997)
ⓘ Bukstad	Flink (1886)
Hæstad ⓘ Igletjødn Feldspar Quarry (Igletjern)	[Aeschynite-(Y)] Adamson (1942)
ⓘ Mæåsen (Medåsen)	[Aeschynite-(Y)] Adamson (1942)
ⓘ Rasvåg feldspar mines	[Aeschynite-(Y)] Adamson (1942) +1 other reference
ⓘ Reseraua	[Aeschynite-(Y)] Adamson (1942)
ⓘ Slådelslia	[Aeschynite-(Y)] Adamson (1942)
ⓘ Urstad Feldspar Mine	[Aeschynite-(Y)] Brøgger (1879) +3 other references
ⓘ Veisdal feldspar quarry	[Aeschynite-(Y)] Adamson (1942)
Froland ⓘ Gloserheia	[Aeschynite-(Y)] Wilke (1976)
ⓘ Iveland	[Aeschynite-(Y)] Bonazzi et al. (2002)
ⓘ Birkeland	[Aeschynite-(Y)] Anthony et al. (1997)
ⓘ Frikstad	[Aeschynite-(Ce)] Anthony et al. (1997)
ⓘ Frikstad 03 Feldspar Quarry (Tuftane)	[Aeschynite-(Y)] Neumann et al. (1960)
ⓘ Frikstad 04 Feldspar Quarry (Dauren)	[Aeschynite-(Y)] Sascha Gemballa collection & photo (Photo-id 837394)
ⓘ Frikstad 07 Feldspar Quarry	[Aeschynite-(Y)] Revheim (2004)
ⓘ Frikstad 12 Feldspar Quarry (Høyland)	[Aeschynite-(Y)] EX collection Geological Institute
ⓘ Frøyså	[Aeschynite-(Y)] Iveland municipality collection # 156
Kåbuland ⓘ Kåbuland 01 Feldspar Quarry (Amerika)	[Aeschynite-(Y)] Bjørlykke (1930) +1 other reference
ⓘ Kåbuland 06 Feldspar Quarry (Tunnelen)	[Aeschynite-(Y)] Ronald Werner
ⓘ Ljosland	[Aeschynite-(Y)] Hansen (2001)
ⓘ Storsynken (Ljosland 10 Feldspar Quarry)	[Aeschynite-(Y)] Breivik et al. (2010)
ⓘ Mølland	[Aeschynite-(Y)] Hansen (2001)
ⓘ Mølland 12 feldspar quarry	[Aeschynite-(Y)] Stensrud (2009)
Lyngdal Austad ⓘ Eitland Feldspar Quarry	[Aeschynite-(Y)] Brøgger (1906)
Risør Søndeled ⓘ Ramskjær Feldspar Quarry	[Aeschynite-(Y)] Andersen (1926) +1 other reference
Akershus Lunner Harestua RV 4 roadcuts ⓘ Zone 7 ?	Werner (2003)
Øståsen ⓘ Midtmoen	Kvamsdal (1993)
Nittedal ⓘ Delebekken Quarry	Canadian Museum of Nature collection
Buskerud Øvre Eiker ⓘ Tryterud-Storekleiv ?	[Aeschynite-(Y)] Anonymous (1982)
Møre og Romsdal Vanylven Almklovdalen ⓘ Gusdal Olivine Pit (Åheim Olivine Pit)	[Aeschynite-(Y)] Garmo et al. (2017)
Nordland Narvik ⓘ Hundholmen	[Aeschynite-(Y)] Husdal (2023)
Telemark Kragerø Lindvikskollen-Kalstadgangen pegmatite ⓘ Lindvikskollen Quarry	[Aeschynite-(Y)] Kristiansen (2010)
Troms og Finnmark Hasvik ⓘ Brennhaugan	[Aeschynite-(Ce)] Nordrum (2001)

Oman
Ash Sharqiyah South Governorate Sal Carbonatite Plugs ⓘ Sal-2	Nasir

Poland
Lower Silesian Voivodeship Jawor County Gmina Paszowice ⓘ Paszowice quarry	[Tantalaeschynite-(Y)] SZEŁĘG E. (2004)
Karkonosze County Gmina Mysłakowice Karpniki ⓘ Karpniki #4 pegmatite	[Aeschynite-(Y)] Matyszczak (2018)
ⓘ Karkonosze Granite	[Aeschynite-(Ce), Aeschynite-(Y)] Kozłowski et al. (2016)

Romania
Harghita County ⓘ Ditrău Complex	Hirtopanu (2006)
ⓘ Jolotca (Orotva)	[Aeschynite-(Nd), Aeschynite-(Y)] Szakáll et al. (2010)

Russia
Buryatia Mama River Basin Maigunda River ⓘ Burpala alkaline massif	Izbrodin et al. (2025)
Chelyabinsk Oblast Ilmen Mountains Dolgiye Mosty reserve-guard station ⓘ Gadolinite Pit	[Aeschynite-(Ce)] Berzelius (1830) +1 other reference
ⓘ Pit No. 50 (Blyumovskaya Pit; Blum Pit)	[Aeschynite-(Ce)] Pavel M. Kartashov (n.d.)
ⓘ Ilmen Nature Reserve	[Aeschynite-(Y)] Anthony et al. (1997)
Karabash ⓘ Karabash ophiolite massif	[Aeschynite-(Y)] Murzin et al. (2018)
Kaslinsky District Kasli ⓘ Potaniny Gory	[Aeschynite-(Ce)] webmineral.ru (2021)
Kyshtym ⓘ Mochalin Log	[Aeschynite-(Ce), Aeschynite-(Nd), Aeschynite-(Y)] webmineral.ru (2020) +1 other reference
ⓘ Miass	[Aeschynite-(Ce), Aeschynite-(Y)] Mineralogical Society of America - ...
ⓘ Pit No. 97	[Aeschynite-(Ce)] The Canadian Mineralogist Vol. 39 (2001)
ⓘ Vishnevye Mountains	[Aeschynite-(Ce)] Mineralogical Society of America - ...
ⓘ Buldym Lake	[Aeschynite-(Ce)]
ⓘ Karavai Mt	[Aeschynite-(Ce)] webmineral.ru (2016)
ⓘ Zlatoust	[Aeschynite-(Ce)] Mineralogical Society of America - ...
Irkutsk Oblast Vitim Plateau Biraya and Bya Rivers confluence area (Chara Basin) ⓘ Biraya Fe-REE ore occurrence	[Aeschynite-(Ce), Aeschynite-(Nd)]
ⓘ Ust'-Biraya	[Aeschynite-(Ce), Aeschynite-(Nd)]
Krasnoyarsk Krai Enisei Range (Yenisei Ridge; Enisei Ridge) Tatarka Range ⓘ Tatarskii Massif	[Aeschynite-(Nd)] Pekov (1998)
Murmansk Oblast ⓘ Khibiny Massif	[Aeschynite-(Ce)] ...
Kukisvumchorr Mt ⓘ Svintsovyi Ruchei (Lead Creek)	[Aeschynite-(Ce)] Shlyukova Z.V. (1986)
ⓘ Lovozero Massif	[Aeschynite-(Ce)] ...
Lovozersky District Keivy Mountains Western Keivy Massif ⓘ El'ozero REE occurrence	[Aeschynite-(Y)] Zozulya +5 other references
ⓘ West Keivy Block	[Aeschynite-(Y)]
ⓘ Platon Mountain	[Aeschynite-(Y)] Pavel M. Kartashov collection
ⓘ White Tundra pegmatite	[Aeschynite-(Y)] Macdonald et al. (2022)
Tersky District ⓘ Korabl Cape	Соловьёва et al. (2023)
Republic of Karelia Loukhsky District ⓘ Elet'ozerskii massif	[Aeschynite-(Ce)]
Sakha ⓘ Gornoozerskii carbonatite complex (Gornoe Ozero)	[Aeschynite-(Ce)] Pavel M. Kartashov (n.d.)
Selennyakh range Tommot river ⓘ Somnitelnyi Massif	[Aeschynite-(Y)] Trunilina et al. (2022)
Tuva Todzhinsky District ⓘ Aryskan REE deposit	[Aeschynite-(Y)]
Ural Mountains Southern Urals Bashkir Meganticlinorium ⓘ Shatak Formation	[Aeschynite-(Y)] Kovalev et al. (2023)

Saudi Arabia
Tabuk Region Midyan ⓘ Ghurayyah Ta deposit	[Aeschynite-(Y)] Küster (2009)

Slovakia
Košice Region Rožňava District ⓘ Gemerská Poloma	[Aeschynite-(Ce), Aeschynite-(Y)] Koděra et al. (1986)
Prešov Region Poprad District Kravany ⓘ Kravany deposit	Koděra et al. (1986)

South Africa
Limpopo Waterberg District Municipality Thabazimbi Local Municipality Thabazimbi ⓘ Glenover carbonatite	Harmer et al. (2016)

South Korea
North Chungcheong Province Chungju City Joongwon-gun Mt. Eorae ⓘ Chungju deposit	[Aeschynite-(Ce), Aeschynite-(Nd), Aeschynite-(Y)] Pavel M. Kartashov (n.d.)

Spain
Canary Islands Las Palmas Province ⓘ Fuerteventura	[Aeschynite-(Ce)] Ковальчук et al. (2014)
Santa Cruz de Tenerife Province Tenerife ⓘ ~~Mount Pelada~~	[Aeschynite-(Y)] Dill et al. (2023)
ⓘ ~~Playa de San Juan~~	[Aeschynite-(Y)] Dill et al. (2023)
Catalonia Girona Alt Empordà Cadaqués ⓘ Cap de Creus	[Aeschynite-(Y)] Alfonso et al. (2000)
ⓘ El Port de la Selva	[Aeschynite-(Y)] & locality references +1 other reference
Community of Madrid Cadalso de los Vidrios ⓘ Veneros claim	[Aeschynite-(Y)] Sainz de Baranda Graf et al. (2026)

Sri Lanka


Sweden
Kronoberg County Växjö Asa ⓘ Asaryd	[Aeschynite-(Y)] See above.
Stockholm County Österåker ⓘ Gruvdalen Mine (Skeppsdal) ?	[Aeschynite-(Y)] Nysten (1996)
Västernorrland County Sundsvall ⓘ Alnö Complex	[Aeschynite-(Ce)] Sandström et al. (2010)
Västra Götaland County Ale Nödinge ⓘ Nol Quarry	[Aeschynite-(Y)] Natural History Museum
Svenljunga Överlida ⓘ Ytterlida pegmatite	[Aeschynite-(Y)] Kjellman (1996)

Switzerland
Bern Interlaken-Oberhasli Guttannen Gerstenegg ⓘ Gerstenegg-Grimsel cable tunnel	[Aeschynite-(Y)] Stalder et al. (1998)
Grisons Moesa Region Grono Leggia ⓘ Leggia Valley	[Aeschynite-(Ce)] Guastoni et al. (2014) +1 other reference
San Vittore Monticello ⓘ Maiò Valley	[Tantalaeschynite-(Y)]
Surselva Region ⓘ Tujetsch	[Aeschynite-(Y)] Mineralogical Society of America - ...
Val Curnera ⓘ Cavradi gorge	Weibel et al. (1990)
ⓘ Val Nalps	[Aeschynite-(Ce)] Anthony et al. (1997)
ⓘ Piz Blas	[Aeschynite-(Y)] Stalder et al. (1998)
ⓘ Piz Rondadura	[Aeschynite-(Y)] Stalder et al. (1998)
Ticino Leventina Airolo Fontana ⓘ Fibbia	[Aeschynite-(Y)] Stalder et al. (1998)
Lucendro Valley ⓘ Lucendro pass	[Aeschynite-(Y)] Stalder et al. (1998)
Prevat Valley ⓘ Monte Prosa	www.mineralienatlas.de (2025)
ⓘ Tremola Valley	[Aeschynite-(Y)] Stalder et al. (1998)
Bedretto Ronco ⓘ Pizzo Rotondo	[Aeschynite-(Y)] Anthony et al. (1997)
ⓘ Ronco tunnel (Bedretto window; Ronco window) [south section]	[Aeschynite-(Y)] Kipfer et al. (1979) +1 other reference
ⓘ Bedretto Valley	[Aeschynite-(Ce)] Anthony et al. (1997)
Lugano Carona ⓘ Madonna d'Ongero	[Aeschynite-(Y)] Stalder et al. (1998)
Uri Urseren Hospental ⓘ St Gotthard pass road	[Aeschynite-(Y)] Mineralogical Society of America - ...
Valais Entremont Orsières Ferret Valley La Fouly ⓘ Aiguille de l'A Neuve	[Aeschynite-(Y)] Cuchet et al. (2003) +1 other reference
Goms Binn ⓘ Chriegalp valley	[Aeschynite-(Y)] Cuchet et al. (2017)
ⓘ Flesch lake	[Aeschynite-(Y)] van der Burgt et al. (2005)
ⓘ Gischi glacier (incl. Gischihorn)	[Aeschynite-(Y)] de Wit et al. (1996)
ⓘ Gischi glacier REE-mineralization	[Aeschynite-(Y)] Cuchet et al. (2022)
ⓘ Wanni glacier - Scherbadung area (Monte Cervandone)	[Aeschynite-(Y)]
Goms Reckingen Blinnen Valley ⓘ Grosse Arsch	Georg Prock collection (https://www.mineralienatlas.de/lexikon/index.php/Genehmigungen/Georg%20Prock#Medientabelle100)
Obergoms Oberwald ⓘ Furka basis tunnel (west section)	[Aeschynite-(Y)] Stephan Wolfsried collection (EDS G. Blaß, SXRD U. Kolitsch)
Ulrichen ⓘ Ägene Valley (Äginen Valley; Aeginen Valley)	Kipfer (1981)
Martigny Mont Chemin mining district ⓘ Crettaz Mine	[Aeschynite-(Y)]
ⓘ Martigny road tunnel	[Aeschynite-(Y)]
ⓘ Tête des Econduits	[Aeschynite-(Y)] Stalder et al. (1998)
Trient ⓘ Tête Noire	[Aeschynite-(Y)] Stalder et al. (1998)
Östlich Raron Grengiols Chummibort ⓘ Ritterpass NE-combe REE-mineralization	[Aeschynite-(Y)] Cuchet et al. (2014) +2 other references
ⓘ Ritterpass NW-combe REE-mineralization	[Aeschynite-(Y)] Cuchet et al. (2014)
ⓘ Mätti Valley	[Aeschynite-(Y)] S Wolfsried collection
Saint-Maurice Vernayaz Miéville ⓘ Gneiss outcrops	[Aeschynite-(Y)] Stalder et al. (1998)
Westlich Raron ⓘ Ausserberg ?	[Aeschynite-(Y)] Berger et al. (2013)
ⓘ Lötschberg Base Tunnel (south section)	Rüegg (2008)
Niedergesteln ⓘ Joli Valley	[Aeschynite-(Y)] Stalder et al. (1998)
Steg-Hohtenn Mittal ⓘ Mittal-Hohtenn road tunnel	Weibel et al. (1990)
ⓘ Roti Loiwina (Roti Lowina) ?	Erik Vercammen field observations and ...

UK
Wales Gwynedd Beddgelert ⓘ Beddgelert Forest
ⓘ Carnedd y Cribau
ⓘ Gallt y Wenallt outcrops

Ukraine
Donetsk Oblast Volnovakha Raion ⓘ Dmitrievskii quarry	Dubyna O.V. et al. (2020)
Zaporizhia Oblast Berdyansk Raion Middle Berda River Rodionovskoe pegmatite field ⓘ Krutaya Balka pegmatite	Shatalov (2017)
Pryazovske Raion Eliseevka Eliseevskoe pegmatite field ⓘ Zelenaya Mogila pegmatite	[Aeschynite-(Y)] Lazarenko E.K. e.a. Mineralogy of ...

USA
Alaska Prince of Wales-Hyder Census Area Ketchikan Mining District Prince of Wales Island Bokan Mountain ⓘ Carol Ann; Carol Ann No. 1; Carol Ann No. 2; Carol Ann No 3; Dotson Prospects	- (2008)
ⓘ I and L; I and L Nos. 3-5 Prospects	- (2008)
Kendrick Bay West Arm of Kendrick Bay ⓘ Geoduck Occurrences	[Aeschynite-(Y)] Philpotts et al. (1998)
Yukon-Koyukuk Census Area Hot Springs Mining District ⓘ Cache Creek Mine	- (2008)
ⓘ Deep Creek and tributaries Mine	- (2008)
ⓘ Tofty Ridge Prospect	- (2008)
ⓘ Unnamed Occurrence (ARDF - TN083; upper Idaho Gulch)	- (2008)
Arizona Mohave County Cerbat Mountains Wallapai Mining District Kingman Feldspar Mine (Kingman Feldspar Quarry) ⓘ Unnamed Pegmatite prospect [1]	[Aeschynite-(Y)] Rocks & Min. (2007)
Arkansas Pulaski County Little Rock Granite Mountain area ⓘ Big Rock Quarry (3M Quarry; Arch Street Pike Quarry)	[Aeschynite-(Y)] Henry Barwood - unpublished (2010)
Colorado Chaffee County Buena Vista Newett ⓘ Clora May Mine	[Aeschynite-(Y)] Eckel et al. (1997)
Clear Creek County Dailey Mining District (Jones Pass Mining District) ⓘ Henderson Mine	[Aeschynite-(Ce), Aeschynite-(Y)] Freeport-McMoRan
Fremont County Goldie Gulch ⓘ Addey pegmatite	[Aeschynite-(Y)] Eckel et al. (1997)
Park County Tarryall Springs Mining District (Puma City) ⓘ Christie Ward-Lucky Thirteen Mine	[Aeschynite-(Y)] Meeves et al. (1966)
Connecticut New London County Waterford ⓘ ~~Flatrock Quarry (Flat Rock Quarry; Crystal Mall)~~	Januzzi et al. (1976)
Idaho Elmore County ⓘ Steel Mountain Stock	[Aeschynite-(Ce)] Ream (2004)
Maine Aroostook County T15 R6 WELS Pennington Mountain ⓘ REE-Nb-Zr occurrence	Wang et al. (2023) +2 other references
Michigan Marquette County Humboldt Township ⓘ Crockley pegmatite	[Aeschynite-(Y)] Snelgrove et al. (1943) +1 other reference
Montana Ravalli County Darby ⓘ Darby - south of	[Aeschynite-(Ce)] Anthony et al. (1997)
Mineral Point Mining District ⓘ Sheep Creek	Heinrich et al. (1961) +2 other references
ⓘ Tirebiter No. 5 & No. 6 prospect (Tirebiter claim; Mona Lisa)	Gobla (2012)
New Hampshire Carroll County Ossipee ⓘ Bald Mountain ?	[Aeschynite-(Ce)]
New Mexico Otero County Cornudas Mountains ⓘ Wind Mountain	USGS Open-File Report 02-189
Rio Arriba County ⓘ Petaca Mining District	[Aeschynite-(Y)] Michael N. Spilde et al. (2016)
North Carolina Yancey County Burnsville Hurricane Mountain ⓘ ~~Ray Mica Mine~~	[Aeschynite-(Ce)] W.E
ⓘ Webb Mine	[Aeschynite-(Ce)] Warner et al. (1993)
Texas Hudspeth County ⓘ Sierra Blanca Peaks	[Aeschynite-(Y)] Smith (2016)
ⓘ Round Top prospects	[Aeschynite-(Ce)] Elliott (2018) +1 other reference
Washington King County Snoqualmie Mining District Middle Fork of the Snoqualmie River ⓘ Marten Creek Pegmatite	Cannon (1975)

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