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Dumortierite

Big Photo

Dehesa, Alpine, San Diego Co., California, USA
© Caltech

Show Dumortierite Photos (37)
Formula:
(Al,Fe
3+
 
)
 
7
[O
 
3
|BO
 
3
|(SiO
 
4
)
 
3
]
System:OrthorhombicColour:Blue, greenish-blue, ...
Lustre:VitreousHardness:7
Isostructural with:Magnesiodumortierite
This page provides mineralogical data about Dumortierite.

Classification of Dumortierite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:8/B.31-20
Nickel-Strunz 10th (pending) edition ID:9.AJ.10

9 : SILICATES (Germanates)
A : Nesosilicates
J : Nesosilicates with BO3 triangles and/or B[4], Be[4] tetrahedra, cornersharing with SiO4
Dana 8th edition ID:54.1.2.1

54 : NESOSILICATES Borosilicates and Some Beryllosilicates
1 : Borosilicates and Some Beryllosilicates with (BO3)
Hey's CIM Ref.:17.5.25

17 : Silicates Containing other Anions
5 : Borosilicates
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Type Occurrence of Dumortierite

Type Locality:Chaponost, Beaunan, Rhône, Rhône-Alpes, France
Year of Discovery:1881

Physical Properties of Dumortierite

Lustre:Vitreous
Colour:Blue, greenish-blue, violet-blue, pale blue, red
Hardness (Mohs):7

Crystallography of Dumortierite

Crystal System:Orthorhombic
Cell Parameters:a = 11.77Å, b = 20.21Å, c = 4.71Å
Ratio:a:b:c = 0.582 : 1 : 0.233
Unit Cell Volume:V 1,120.38 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Horizontal Axis: ° to ° Vertical Axis: % Source Data: Filtered Data: Peaks:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Optical Data of Dumortierite

Type:Biaxial (-)
RI values: nα = 1.659 - 1.678 nβ = 1.684 - 1.691 nγ = 1.686 - 1.692
2V:Measured: 20° to 52°, Calculated: 30°
Maximum Birefringence:δ = 0.027

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High
Dispersion:r > v or r < v

Chemical Properties of Dumortierite

Formula:
(Al,Fe
3+
 
)
 
7
[O
 
3
|BO
 
3
|(SiO
 
4
)
 
3
]
Essential elements:Al, B, O, Si
All elements listed in formula:Al, B, Fe, O, Si
Common Impurities:Fe,Ti,Mg,Ca

Relationship of Dumortierite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.AJ.05Grandidierite
(Mg,Fe
2+
 
)(Al,Fe
3+
 
)
 
3
[O
 
2
|BO
 
3
|SiO
 
4
]
9.AJ.05Ominelite
(Fe
2+
 
,Mg)(Al,Fe
3+
 
)
 
3
[O
 
2
|BO
 
3
|SiO
 
4
]
9.AJ.10Holtite
(Ta,Sb)Al
 
6
[O
 
3
|BO
 
3
|(SiO
 
4
)
 
3
]
9.AJ.10Magnesiodumortierite
(Mg,Ti,[](Al,Mg)
 
2
Al
 
4
Si
 
3
O
 
18-y
(OH)
 
y
B y = 2-3
9.AJ.15Garrelsite
Ba
 
3
NaSi
 
2
B
 
7
O
 
16
(OH)
 
4
9.AJ.20Bakerite
Ca
 
4
B
 
4
[(OH)
 
4
|HBO
 
4
|(SiO
 
4
)
 
3
]
9.AJ.20Datolite
CaB[OH|SiO
 
4
]
9.AJ.20Gadolinite-(Ce)
(Ce,La,Nd,Y)
 
2
Fe
2+
 
Be
 
2
[O|SiO
 
4
]
 
2
9.AJ.20Gadolinite-(Y)
Y
 
2
Fe
2+
 
Be
 
2
[O|SiO
 
4
]
 
2
9.AJ.20Hingganite-(Ce)
(Ce,REE)
 
2
(□,Fe
2+
 
)Be
 
2
[SiO
 
4
]
 
2
(OH)
 
2
9.AJ.20Hingganite-(Y)
(Y,REE,Ca)
 
2
(□,Fe
2+
 
)Be
 
2
[SiO
 
4
]
 
2
(OH)
 
2
9.AJ.20Hingganite-(Yb)
(Yb,Y,REE)
 
2
□Be
 
2
[SiO
 
4
]
 
2
(OH)
 
2
9.AJ.20Homilite
Ca
 
2
(Fe
2+
 
,Mg)B
 
2
[O|SiO
 
4
]
 
2
9.AJ.20Melanocerite-(Ce)
(Ce,Ca)
 
5
(Si,B)
 
3
O
 
12
(OH,F)·nH
 
2
O
9.AJ.20Minasgeraisite-(Y)
Y
 
2
CaBe
 
2
[O|SiO
 
4
]
 
2
9.AJ.20Calcybeborosilite-(Y)
(Y,Ca)
 
2
(□,Fe
2+
 
)(B,Be)
 
2
[SiO
 
4
]
 
2
(OH,O)
 
2
9.AJ.25Stillwellite-(Ce)
(Ce,La,Ca)BSiO
 
5
9.AJ.30Cappelenite-(Y)
Ba(Y,Ce)
 
6
Si
 
3
B
 
6
O
 
24
F
 
2
9.AJ.35Okanoganite-(Y)
(Na,Ca)
 
3
(Y,Ce)
 
12
Si
 
6
B
 
2
O
 
27
F
 
14
9.AJ.35Vicanite-(Ce)
(Ca,Ce,La,Th)
 
15
As
5+
 
(As
3+
0.5
,Na
 
0.5
)Fe
3+
 
Si
 
6
B
 
4
O
 
40
F
 
7
9.AJ.35Hundholmenite-(Y)
(Y,REE,Ca,Na)
 
15
(Al,Fe
3+
 
)(Ca
 
x
As
3+
1-x
)(Si,As
5+
 
)Si
 
6
B
 
3
(O,F)
 
48
9.AJ.35Proshchenkoite-(Y)
(Y,REE,Ca,Na,Mn)
 
15
Fe
2+
 
Ca(P,Si)Si
 
6
B
 
3
O
 
34
F
 
14
9.AJ.40Jadarite
LiNaSiB
 
3
O
 
7
(OH)
Related Minerals - Hey's Index Grouping:

- +
17.5.1Manandonite
LiAl
 
4
Si
 
3
BO
 
10
(OH)
 
6
17.5.2Reedmergnerite
Na[BSi
 
3
O
 
8
]
17.5.3Searlesite
NaBSi
 
2
O
 
5
(OH)
 
2
17.5.4Olenite
(Na,[ ])[(Al,Li)
 
3
][Al
 
6
][(O,OH)
 
3
|OH|(BO
 
3
)
 
3
|Si
 
6
O
 
18
]
17.5.5Elbaite
[Na][(Li,Al)
 
3
][Al
 
6
][(OH)
 
3
|OH|(BO
 
3
)
 
3
|Si
 
6
O
 
18
]
17.5.6Kalborsite
K
 
6
[Cl|B(OH)
 
4
|Al
 
4
Si
 
6
O
 
20
]
17.5.7Boromuscovite
KAl
 
2
[(OH)
 
2
|BSi
 
3
O
 
10
]
17.5.8Poudretteite
KNa
 
2
B
 
3
Si
 
12
O
 
30
17.5.9Liddicoatite
[Ca][Li
 
2
Al][Al
 
6
][(OH)
 
3
|F|(BO
 
3
)
 
3
|Si
 
6
O
 
18
]
17.5.10Datolite
CaB[OH|SiO
 
4
]
17.5.11Danburite
CaB
 
2
Si
 
2
O
 
8
17.5.12Howlite
Ca
 
2
B
 
5
SiO
 
9
(OH)
 
5
17.5.13Bakerite
Ca
 
4
B
 
4
[(OH)
 
4
|HBO
 
4
|(SiO
 
4
)
 
3
]
17.5.14Oyelite
Ca
 
10
Si
 
8
B
 
2
O
 
29
·12.5H
 
2
O
17.5.15Kornerupine
Mg
 
3
Al
 
6
(Si,Al,B)
 
5
O
 
21
(OH)
17.5.16Harkerite
Ca
 
24
Mg
 
8
Al
 
2
Si
 
8
(O,OH)
 
32
(BO
 
3
)
 
8
(CO
 
3
)
 
8
(H
 
2
O,Cl)
17.5.17Serendibite
(Ca,Na)
 
2
(Mg,Fe
2+
 
)
 
3
(Al,Fe
3+
 
)
 
3
[O
 
2
|(Si,Al,B)
 
6
O
 
18
]
17.5.18Stillwellite-(Ce)
(Ce,La,Ca)BSiO
 
5
17.5.19Tadzhikite-(Ce)
(Ca,Ce)
 
4
(Ce,Y)
 
2
(Ti
4+
 
,Fe
3+
 
,Al)[B
 
4
Si
 
4
O
 
22
](OH)
 
2
17.5.20Melanocerite-(Ce)
(Ce,Ca)
 
5
(Si,B)
 
3
O
 
12
(OH,F)·nH
 
2
O
17.5.21Okanoganite-(Y)
(Na,Ca)
 
3
(Y,Ce)
 
12
Si
 
6
B
 
2
O
 
27
F
 
14
17.5.22Tritomite-(Ce)
(Ce,La,Y,Th)
 
5
(Si,B)
 
3
(O,OH,F)
 
13
17.5.23Tritomite-(Y)
(Y,Ca,La,Fe)
 
5
(Si,B,Al)
 
3
(O,OH,F)
 
13
17.5.24Cappelenite-(Y)
Ba(Y,Ce)
 
6
Si
 
3
B
 
6
O
 
24
F
 
2
17.5.26Holtite
(Ta,Sb)Al
 
6
[O
 
3
|BO
 
3
|(SiO
 
4
)
 
3
]
17.5.27Dravite
[Na][Mg
 
3
][Al
 
6
][(OH)
 
3
|OH|(BO
 
3
)
 
3
|Si
 
6
O
 
18
]
17.5.28 Ferridravite
17.5.29Axinite-(Mg)
Ca
 
2
MgAl
 
2
[OH|BSi
 
4
O
 
15
]
17.5.30Uvite
[Ca][(Mg,Fe
2+
 
)
 
3
][MgAl
 
5
][(OH)
 
3
|F|(BO
 
3
)
 
3
|Si
 
6
O
 
18
]
17.5.31Garrelsite
Ba
 
3
NaSi
 
2
B
 
7
O
 
16
(OH)
 
4
17.5.32Tienshanite
KNa
 
3
Na
 
6
Ca
 
2
Ba
 
6
Mn
 
6
(Ti
4+
 
,Nb)
 
6
B
 
12
Si
 
36
O
 
114
(O,OH,F)
 
11
17.5.33Leucosphenite
BaNa
 
4
Ti
 
2
B
 
2
Si
 
10
O
 
30
17.5.34Taramellite
Ba
 
4
(Fe
3+
 
,Ti,Fe
2+
 
,Mg)
 
4
(B
 
2
Si
 
8
O
 
27
)O
 
2
Cl
 
x
17.5.35Titantaramellite
Ba
 
4
(Ti,Fe
3+
 
,Fe
2+
 
,Mg)
 
4
(B
 
2
Si
 
8
O
 
27
)O
 
2
Cl
 
x
17.5.36Nagashimalite
Ba
 
4
(V,Ti)
 
4
B
 
2
Si
 
8
O
 
27
(O,OH)
 
2
Cl
17.5.37Chromdravite
[Na][Mg
 
3
][(Cr
3+
 
,Fe
3+
 
)
 
6
][(OH)
 
3
|OH|(BO
 
3
)
 
3
|Si
 
6
O
 
18
]
17.5.38Wawayandaite
Ca
 
6
Mn
 
2
BBe
 
9
Si
 
6
O
 
23
(OH,Cl)
 
15
17.5.39Werdingite
(Mg,Fe)
 
2
Al
 
14
Si
 
4
B
 
4
O
 
37
17.5.40Axinite-(Mn)
Ca
 
2
Mn
2+
 
Al
 
2
[OH|BSi
 
4
O
 
15
]
17.5.41Axinite
17.5.42Tinzenite
(Ca,Mn
2+
 
,Fe
2+
 
)
 
3
Al
 
2
[OH|BSi
 
4
O
 
15
]
17.5.44Schorl
[Na][Fe
2+
3
][Al
 
6
][(OH)
 
3
|OH|(BO
 
3
)
 
3
|Si
 
6
O
 
18
]
17.5.45Buergerite
[Na][Fe
3+
3
][Al
 
6
][O
 
3
|F|(BO
 
3
)
 
3
|Si
 
6
O
 
18
]
17.5.46Feruvite
[Ca][(Fe
2+
 
 ,Mg)
 
3
][MgAl
 
5
][(OH)
 
3
|F|(BO
 
3
)
 
3
|Si
 
6
O
 
18
]
17.5.47Axinite-(Fe)
Ca
 
2
Fe
2+
 
Al
 
2
[OH|BSi
 
4
O
 
15
]
17.5.48Homilite
Ca
 
2
(Fe
2+
 
,Mg)B
 
2
[O|SiO
 
4
]
 
2
17.5.49Grandidierite
(Mg,Fe
2+
 
)(Al,Fe
3+
 
)
 
3
[O
 
2
|BO
 
3
|SiO
 
4
]
17.5.50Hyalotekite
(Ba,Pb,Ca,K)
 
6
(B,Si,Al)
 
2
(Si,Be)
 
10
O
 
28
(F,Cl)
17.5.51Hellandite-(Y)
(Ca,Y)
 
6
(Al,Fe
3+
 
)Si
 
4
B
 
4
O
 
20
(OH)
 
4

Other Names for Dumortierite

Other Languages:
Dutch:Dumortieriet
German:Dumortierit
Italian:Dumortierite
Polish:Dumortieryt
Russian:Дюмортьерит
Spanish:Dumortierita

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.

References for Dumortierite

Reference List:Ford, William Ebenezer (1902), On the chemical composition of dumortierite: Am. Jour. Sci., 4th. Series: 14: 426-430; …Zeitschr. Kristallographie, Band 37: 417-421 (1903).

Schaller, Waldemar Theodore (1905), Dumortierite: Am. Jour. Sci., 4th. Series: 19: 211-224; …USGS Bull. 262: 91-120.

Schaller, Waldemar Theodore (1906), Ueber dumortierite: Zeitschr. Kristallographie, Band 41: 19-47.

Losert, J. (1956): Dumortierites from the migmatites and pegmatites in the vicinity of Kutná Hora. Rozpr. ČSAV: 66(1): 1-44 (in Czech with Russian and English abstracts).

Hey, M.H. & G.F. Claringbull (1958), New data for dumortierite, Mineralogical Magazine: 31: 901-907.

Neues Jahrbuch für Mineralogie, Abhandlungen: 132: 231-241.

Visser, D. (1995): Bibliography of dumortierite. Proceedings of the Koninklijke Nederlandse Akademie van Wetenschappen: Biological, Chemical, Geological, Physical and Medical Sciences 98, 89-105.

Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).

Cempírek, J. (2003) Mineral assemblages and chemistry of dumortierite from granitic pegmatites. M.S. thesis, Institute of Geological Sciences, Brno, Czech Republic (in Czech with English abstract).

Fuchs, Y., Ertl, A., Hughes, J.M., Prowatke, S., Brandstätter, F., Schuster, R. (2005): Dumortierite from the Gföhl unit, Lower Austria: chemistry, structure, and infra-red spectroscopy. European Journal of Mineralogy, 17, 173-183.

Internet Links for Dumortierite

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    Localities for Dumortierite

    Hide Locality List
    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.
    Antarctica
    AmMin 36:361-367
    AmMin 36:361-367
    Australia
     
    • Victoria
    		No reference listed
    Austria
     
    • Carinthia
      • Saualpe Mts
        • Lading
          • Kötsch
    		G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
        • Ladinger Spitze Mt. - Speikkogel Mt. area
    		G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
        • Reisberg
    		R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
    • Lower Austria
      • Dunkelsteinerwald
        • Meidling im Tal
    		Huber, S. und Huber, P. (1977): Mineral-Fundstellen Band 8: Oberösterreich, Niederösterreich und Burgenland. C. Weise Verlag, München, 270 pp.
      • Wachau
        • Rossatz
    		Fuchs, Y., Ertl, A., Hughes, J.M., Prowatke, S., Brandstätter, F. & Schuster, R. (2005): Dumortierite from the Gföhl unit, Lower Austria: chemistry, structure, and infra-red spectroscopy. EJM, 17, 173-183.
      • Waldviertel
        • Gföhl
    		Fuchs, Y., Ertl, A., Hughes, J.M., Prowatke, S., Brandstätter, F. & Schuster, R. (2005): Dumortierite from the Gföhl unit, Lower Austria: chemistry, structure, and infra-red spectroscopy. EJM, 17, 173-183.
        • Klein-Pöchlarn
    		R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
    • Styria
      • Koralpe Mts
        • Deutschlandsberg
          • Osterwitz
    		Aufschluss 1972(SB), 44
          • Wildbachgraben
    		Aufschluss 1972(SB), 44
        • Schwanberg
    		Aufschluss 1972(SB), 43-47
    Bolivia
     
    • Potosí Department
      • Nor Chichas Province
        • Atocha-Quechisla District
          • Cerro Tazna
    		Salomon Rivas y Federico Ahlfeld (1998) Los Minerales de Bolivia y sus Parajes. (Santa Cruz)
    Brazil
     
    • Northeast Region
      • Bahia
        • Boquira (former Macaúbas)
          • Serra da Vereda
    		MinMag 61:607 (1997)
    Bulgaria
     
    • Pazardzhik (Pazardjik) Oblast
      • Srednogorie (Sredna Gora; Srdnia Gora) Region
        • Panagyurishte (Panagurishte) Obshchina
          • Elshitsa
    Canada
     
    • British Columbia
      • Nanaimo Mining Division
        • Vancouver Island
          • Port Hardy
    		BC Mining Reports 1970, pg 267-269
    • Nova Scotia
      • Lunenberg Co.
        • New Ross
    		http://is2.dal.ca/~dommelen/NewRoss.html.
    Chile
     
    • Coquimbo Region
      • Elqui Province
    		Samples analysed by Dr. Jochen Schluter (Hamburg University), Germany.
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Central Bohemia Region
        • Kuklík
    		Canadian Mineralogist: 44: 23-30.
    Duda, Rejl, Slivka: "Mineralien", 1991
    Povondra, P., Pivec, E. (eds.) et al.: Přibyslavice peraluminuous granite. Acta universitatis carolinae, Geologica, 1987, no. 3, s . 183 – 283.
    • Moravia (Mähren; Maehren)
      • South Moravia Region
        • Znojmo
    		Cempírek, J., Novák, M.: Dumortierit a turmalín z abysálních pegmatitů od Vémyslic u Moravského Krumlova, gföhlská jednotka, moldanubikum. Acta Musei Moraviae, Scientiae geologicae, 2004, roč. 89, s. 45 - 54.
      • Vysočina Region
        • Velké Meziříčí
    		Novák, M., Staněk, J.: Lepidolitový pegmatit od Dobré Vody u Velkého Meziříčí, západní Morava. Acta Musei Moraviae, Scientiae geologicae, 1999, roč. 84, s. 3 - 44.
        • Žďár nad Sázavou
    		Staněk, J.: Parageneze minerálů pegmatitových žil z Hatí u Dolních Borů na západní Moravě. Acta Mus. Moraviae, Sci. nat., vol. 76, pages 19-49.
    Cempírek, J., Novák, M.: Krystalochemie Al – bohatých borosilikátů. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 2000, roč. 8, s. 91-99.
    Finland
     
    • Etelä-Suomen Lääni
      • Lappeenranta
    France
     
    • Midi-Pyrénées
      • Tarn
        • Castelnau-de-Brassac
          • Lamontélarié
    		Bull. Soc. Franç. Minéralo. Cristallo. , 1974, 97, p. 522.
    • Rhône-Alpes
      • Rhône
        • Beaunan
    		Bull.Soc.fr.Mineral.(1881) 4, 2-8
        • Lyon
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Kandern
          • Malsburg
    		K. Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
    • Bavaria
      • Lower Bavaria
        • Bavarian Forest
          • Arnbruck
            • Drachselsried
    		Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
      • Upper Palatinate
        • Oberpfälzer Wald
          • Tirschenreuth
            • Marchaney
    		Weiss: "Mineralfundstellen, Deutschland West", 1990
        • Waldeck
    		Pöllmann et al. (2007): Aufschluss 58, 227-233.
    • Rhineland-Palatinate
      • Eifel Mts
        • Gerolstein
          • Rockeskyll
    		Haardt, W., Die vulkanischen Auswürflinge und Basalte am Killer Kopf bei Rockeskyll in der Eifel, Jb. Preuß. Geolog. Landesanstalt, Berlin 35, 177-252
    • Saxony
      • Chemnitz
        • Hartmannsdorf
    		H. Vollstädt, R. Baumgärtel: "Einheimische Edelsteine", 2nd. ed., Steinkopff (Dresden), 1977
      • Döbeln
        • Waldheim
    		Wittern: "Mineralfundorte in Deutschland", 2001
    Italy
     
    • Piedmont
      • Verbano-Cusio-Ossola Province
        • Ornavasso
    		Orlandi, P. & Campostrini, I. (2005): Zibaldone. Aggiornamenti di mineralogia italiana 2004. Rivista Mineralogica Italiana, 3/2005, 184-191.
    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.
      • Vercelli Province
        • Sesia Valley
          • Borgosesia
    		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.
    Japan
     
    • Honshu Island
      • Chubu Region
        • Niigata Prefecture
    		Fossa Magna Museum specimens, Itoigawa
        • Yamanashi prefecture
          • Mitomi-mura
    		No reference listed
      • Kanto region
        • Ibaraki Prefecture
          • Taga-gun
            • Hitachi-machi
    		Dr. Kameki Kinoshita collection (curated at Geological Survey of Japan)
        • Tochigi Prefecture
    		Dr. Kameki Kinoshita collection (curated at Geological Survey of Japan)
      • Kinki Region
        • Nara Prefecture
          • Yoshino-gun
            • Tenkawa village
              • Omine Mts
    		American Mineralogist 87: 160-170 (2002)
      • Tohoku Region
        • Fukushima Prefecture
          • Koriyama
    		Alfredo Petrov collection.
    • Kyushu Region
      • Nagasaki Prefecture
        • Fukue Island
    		Dr. Kameki Kinoshita collection (curated at Geological Survey of Japan)
    Madagascar
     
    • Fianarantsoa Province
      • Amoron'i Mania Region
        • Ambatofinandrahana District
          • Itremo massif
    		Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive , p 34
    Ackermand et al.(2006): "Lazulite-bearing metaquartzite of the Itremo Group (Central Madagascar); Scientific significance and economic importance" in Proceedings of the Malagasy-German Research Cooperation in Life and Earth sciences, 5-18
    Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive , p 34
    Ackermand et al.(2006): "Lazulite-bearing metaquartzite of the Itremo Group (Central Madagascar); Scientific significance and economic importance" in Proceedings of the Malagasy-German Research Cooperation in Life and Earth sciences, 5-18
          • Soavina Commune
    		Ackermand et al. (2006): Lazulite-bearing metaquartzite of the Itremo Group (Central Madagascar); Scientific significance and economic importance. in Proceedings of the Malagasy-German Research Cooperation in Life and Earth sciences, 5-18
    Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. p 401-403
    Maro Barsanti & Martins da Pedra photos
    Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
    • Toamasina (Tamatave) Province
      • Alaotra-Mangoro Region
        • Ambatondrazaka District
          • Ambatosoratra Commune
    		Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
    Mozambique
     
    • Tete Province
    		O. Dziallas
    Martins da Pedra.
    Namibia
     
    • Erongo Region
      • Karibib District
        • Etemba 135 farm
    		Min Rec (2006) 37:361-470
    New Zealand
     
    • North Island
      • Northland
        • Far North
          • Karikari Peninsula
    		 Railton, G.L. & Watters, W.A., Minerals of New Zealand, New Zealand Geological Survey Bull. #104 (1990).
    • South Island
      • Clutha-Central Otago
    		Railton, G.L. & Watters, W.A., Minerals of New Zealand, New Zealand Geological Survey Bull. #104 (1990).
    Norway
     
    • Aust-Agder
      • Froland
    		Nijland, T.G., Zwaan, J.C & Touret, L. (1998): Topograpical mineralogy of the Bamble sector, south Norway. Scripta Geologica 118, 46 pp
      • Risør
        • Søndeled
    		Hulzebos-Sijen N.M.P.E., Visser, D., Maarschalkerweerd, M.H. & Maijer, C. (1990): Two new kornerupine localities in the Bamble Sector, south Norway. Abstract 19th Nordic Geological Winter Meeting, Geonytt, 17, 58
      • Tvedestrand
    		Situated in the upper-amphibolite facies area of the Bamble Sector (Geological term). Cordierite-orthoamphibole bearing rocks
    • Finnmark
      • Hasvik
    		Bøe, P. (2001): Geologi og mineralogi på Sørøya i Finnmark. Bergverksmuseets Skrift 18, 23-29
    • Rogaland
      • Lund
        • Flatestøl
    		Grew, E.S. et al.(1998): Boralsilite (Al16B6Si2O37): A new mineral related to sillimanite from pegmatites in granulite-facies rocks. American Mineralogist. 83: 638-651
    • Telemark
      • Bamble (Bamle)
    		Visser, D. & Senior, A. (1991): Mg-rich dumortierite in cordierite-orthoamphibole bearing rocks from the highgrade Bamble Sector, South Norway. Mineralogical Magazine 55: 563-577
    Kvamsdal, L.O.(2001): Dumortieritt- og sillimanittpegmatitter fra Bamble og Kragerø, Telemark. STEIN 28 (1):8-10
    Kvamsdal, L.O.(2001): Dumortieritt- og sillimanittpegmatitter fra Bamble og Kragerø, Telemark. STEIN 28 (1):8-10
    Poland
     
    • Lower Silesia (Dolnośląskie)
      • Karkonosze Massif
        • Karkonosze Mts
          • Karpacz - Wilcza Poręba (Wolfshau)
    		Elek Szełęg collection
          • Szklarska Poręba District
    		Pieczka A., Gołębiowska B. 2002: Pegmatites of the Szklarska Poręba Huta granite quarry: preliminary data on REE-mineralization. Mineralogia Polonica, vol. 20, 175-177
    Russia
     
    • Eastern-Siberian Region
      • Saha Republic (Sakha Republic; Yakutia)
    		[World of Stones 12:49]
    P.M. Kartashov data
    • Urals Region
      • Middle Urals
        • Ekaterinburgskaya (Sverdlovskaya) Oblast'
          • Rezh District
            • Lipovka pegmatite field
    • Western-Siberian Region
      • Altai Republic (Gorno-Altayskaya Autonomous Oblast')
    Slovakia
     
    • Košice Region
      • Southern Vihorlat Mts
        • Remetské Hámre
    		Bacsó,Z.,Ďuďa,R.,1988: Metalogenéza a rudné formácie rudného poľa Remetské Hámre. Min.Slovaca,Bratislava, 3, 193-220p
    South Africa
     
    • Northern Cape Province
      • Namaqualand
        • Kenhardt District
    		Minerals of South Africa
    South Korea
     
    Sudo, Sadahisa; Kim, Moon Young; Koh, Sang Mo; Takagi, Tetsuichi (1999): Roseki ore deposits of Southeast Korea - Miriyan mine, occurrence of dumortierite. Chishitsu Nyusu 534, 43-50.
    Sweden
     
    • Jämtland
      • Åre
        • Åreskutan
    		No reference listed
    • Norrbotten
      • Harads
    Switzerland
     
    • Grischun (Grisons; Graubünden)
      • Bregaglia Valley (Bergell)
        • Forno Valley
    		Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): Mineralienlexikon der Schweiz. Wepf (Basel), p. 144.
    • Ticino (Tessin)
      • Lago Maggiore
        • Brissago
    		Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): Mineralienlexikon der Schweiz. Wepf (Basel), p. 144.
    Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): Mineralienlexikon der Schweiz. Wepf (Basel), p. 144.
      • Riviera
    		Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): Mineralienlexikon der Schweiz. Wepf (Basel), p. 144.
    UK
     
    • England
      • Cornwall
    		No reference listed
      • Devon
        • Okehampton area (Northern Dartmoor)
    		[Specimen in the Natural History Museum, London]
    Ukraine
     
    • Zhytomyr Oblast' (Zhitomir Oblast')
    		No reference listed
    USA
     
    • Alaska
      • Nome Borough
        • Seward Peninsula
          • York Range
    		Econ Geol (1988) 83:46-61
    • Arizona
      • Cochise Co.
        • Willcox
    		Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 210; Duke, A. (1960), Arizona gem fields, 2nd. ed., Southwest printers, Yuma, AZ; Funnell, J.E. & E.J. Wolfe (1964), Compendium on nonmetallic minerals of Arizona, Southwest Research Institute, San Antonio, TX.
      • La Paz & Yuma Cos.
        • Ehrenberg to Yuma area
    		Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 210; Wilson, E.D. (1929), An occurrence of dumortierite near Quartzsite, AZ, Am.Min.: 14: 373-381; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 102.
      • La Paz Co.
    		Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 270; Reynolds, S.J. et al (1988), Geologic setting of Mesozoic and Cenozoic metamorphism in AZ, in W.G. Ernst (editor), Metamorphism and crustal evolution of the western United States. Ruby Vol. No. 7, Prentice Hall, NY: 466-501.
          • Middle Camp-Oro Fino District
    		Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 110, 210; Wilson, E.D. (1929), An occurrence of dumortierite near Quartzsite, AZ, Am.Min.: 14: 373-381; Wilson, E.D. (1933), Geology and mineral deposits of southern Yuma Co., AZ, AZ Bur. Mines Bull. 134; Duke, A. (1960), Arizona gem fields, 2nd. edition, Southwest Printers, Yuma, AZ; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 98, 102.
        • Quartzsite
          • Dome Rock Mts
    		Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 210, 273; Bideaux, R.A., et al (1960), Some new occurrences of minerals of AZ, AZ Geol. Soc. Digest: 3: 53-56; Reynolds, S.J., et al (1988), Geologic setting of mesozoic and Cenozoic metamorphism in AZ, in W.G. Ernst (editor), Metamorphism and crustal evolution of the western United States. Ruby volume No. 7. Prentice Hall, New York: 466-501.
        • Trigo Mts
          • Silver District
            • Hidden Valley
    		Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 210; Diller, J.S. & J.E. Whitfield (1889), Dumortierite from Harlem, NY and Clip, AZ, Amer. Jour. Sci., 3rd. series: 37: 216-220; Ford, W.E. (1902), On the chemical composition of dumortierite (from Clip, AZ), Amer. Jour. Sci., 4th. series: 14: 426-430; Schaller, W.T. (1905), Dumortierite, USGS Bull. 262: 91-120; Bowen, N.L. & R.W.G. Wyckoff (1926), A petrologic and X-ray study of the thermal dissociation of dumortierite (from Clip, AZ), Jour. Wash. Acad. Sci.: 16: 178-189; Wilson, E.D. (1933), AZ Bur. of Mines Bull. 134: 43.
    No reference listed
    MRDS database Dep. ID file #10056453, MRDS ID #TC00272.
      • Santa Cruz Co.
        • Patagonia Mts
          • Patagonia District
            • Nogales
    		Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 210.
    • California
      • Imperial Co.
        • Chocolate Mts
    		Ransom, J.E. (1955) Arizona gem trails and the Colorado Desert. Mineralogist Publishing Co., Portland, Oregon: 19-20; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 454.
      • Kern Co.
        • Lost Hills
    		Reed, Ralph Daniel & J.P. Bailey (1927), Subsurface correlation by means of heavy minerals: American Association of Petroleum Geologists Bulletin: 11: 363; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 173; Pemberton, H. Earl (1983), Minerals of California: 454, 466.
    Reed, Ralph Daniel & J.P. Bailey (1927), Subsurface correlation by means of heavy minerals: American Association of Petroleum Geologists Bulletin: 11: 363; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 102.
    No reference listed
      • Riverside Co.
    		U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; American Mineralogist (1930) 15: 79-80
    U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
        • Winchester
    		Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 173; Pemberton, H. Earl (1983), Minerals of California: 454.
      • San Diego Co.
        • Alpine
    		No reference listed
    in the collection of J. Weissmann
    • Colorado
      • Fremont Co.
    		"Minerals of Colorado, updated & revised", p. 15, by Eckel, Edwin B., 1997
    • Maine
      • Oxford Co.
        • Albany
    		King, V., 2009, Maine Feldspar, Families, and Feuds; King, V. (ed.), 2009, Maine feldspar, Families, and Feuds.
    King, V., 2009, Maine Feldspar, Families, and Feuds
    King, V., 2000, Mineralogy of Maine, volume 2.
    King, V. (ed.), 2009, Maine feldspar, Families, and Feuds
    King, V. (ed.), 2009, Maine feldspar, Families, and Feuds
    King, V. (ed.), 2009, Maine feldspar, Families, and Feuds
    King, V. (ed.), 2009, Maine feldspar, Families, and Feuds
        • Batchelder's Grant
    		King, V. (ed.), 2009, Maine feldspar, Families, and Feuds
        • Buckfield
    		King, V., 2008, Maine Feldspar, Families, and Feuds
        • Gilead
    		King, V. (ed.), 2009, Maine feldspar, Families, and Feuds
        • Greenwood
    		King, V., 2008, Maine Feldspar, Families, and Feuds
        • Hebron
    		King, V., 2008, Maine Feldspar, Families, and Feuds
    King, V., 2008, Maine Feldspar, Families, and Feuds
        • Lovell
    		King, V., 2008, Maine Feldspar, Families, and Feuds
        • Mason
    		King, V., 2008, Maine Feldspar, Families, and Feuds
        • Norway
    		King, V., 2000, Mineralogy of Maine, volume 2.
    King, V., 2000, Mineralogy of Maine, volume 2.
    King, V., 2000, Mineralogy of Maine, volume 2.
        • Paris
    		King, V., 2000, Mineralogy of Maine, volume 2.
    King, V., 2000, Mineralogy of Maine, volume 2.
    King, V., 2000, Mineralogy of Maine, volume 2.
      • Sagadahoc Co.
    		King & Foord, 1994. Mineralogy of Maine, V 1, p.111.
    King & Foord, 1994. Mineralogy of Maine, V 1, p.111.
    • Montana
    		Jay Ellis Ransom,1974, Gems and Minerals of America
    Jay Ellis Ransom,1974, Gems and Minerals of America
        • Cataract District (Comet District; Basin District)
    		U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
        • Jack Creek Ridge Area
    		U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
      • Madison Co.
        • Ruby Range
    		U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    • Nevada
      • Clark Co.
        • Bunkerville District
          • Virgin Mountains
    		NBMG Spec. Pub. 31 Minerals of Nevada
      • Mineral Co.
        • Fitting District
    		NBMG Spec. Pub. 31 Minerals of Nevada
    NBMG Spec. Pub. 31 Minerals of Nevada
      • Nye Co.
    		NBMG Spec. Pub. 31 Minerals of Nevada
    NBMG Spec. Pub. 31 Minerals of Nevada
      • Pershing Co.
        • Rochester District
    		NBMG Bull 89 Geology and Mineral Resources of Pershing County, Nevada
        • Sacramento District
    		NBMG Spec. Pub. 31 Minerals of Nevada
      • Washoe Co.
        • Deephole District
    		NBMG Spec. Pub. 31 Minerals of Nevada
    • New Mexico
      • Luna Co.
        • Tres Hermanas District
    		NMBMMR Bull 72 Mineral Deposits of Luna County, New Mexico
      • Rio Arriba Co.
    		Northrop, Minerals of New Mexico, 3rd rev. Ed., 1996
    NMBMMR Bull 87 Mineral and Water Resources of New Mexico
    The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. Vol. 3, No. 1, Manchester, J.G. (1931): 84.
      • New York City
        • Manhattan (New York Co.)
    		No reference listed
    NY State Museum spec. no. 16908
      • Saratoga Co.
        • Batchellerville
    		George Robinson & Steven Chamberlain (2007) Gazetteer of major New York State mineral localities. Rocks & Minerals, 82, #6, 472-483.; George Robinson & Steven Chamberlain (2007) Gazetteer of major New York State mineral localities. Rocks & Minerals, 82, #6, 472-483.
      • Westchester Co.
    		Jensen (1978) Minerals of New York State, p.86
    • North Carolina
      • Alexander Co.
    		Charles Palache,S.C Davidson,E.A Goranson,Aug- 1930,The Hiddenite Deposit in Alexander County,North Carolina,American Mineralogist,Vol.15, No.8
    Gems and Minerals of America-Jay Ellis Ransom-1974
        • Kings Mountain
    		Wilson,W.F and Mckenzie,B.J ,1978, Mineral Collecting Sites in North Carolina,Information Circular 24
    Gems and Minerals of America-Jay Ellis Ransom-1974
    Genth,F.A and Kerr,W.C,1881,Mineral and Mineral Localities of North Carolina,Geologic Survey
        • Lincolnton
    		Genth,F.A and Kerr,W.C, 1881,Mineral Localities of North Carolina, Geologic Survey, North Carolina
    • Pennsylvania
      • Chester Co.
        • Valley Township
          • Coatesville
    		Mineral Collecting in PA (1976) Geyer, Smith, Barnes, pgs. 73-75
    • Utah
      • Emery Co.
        • Emery
    		UGMS Bull 117 Minerals and Mineral Localities of Utah
    UGMS Bull 117 Minerals and Mineral Localities of Utah
    • Washington
      • King Co.
        • North Bend
    		Cannon, B. (1975): Minerals of Washington, p.84
        • Snoqualmie District
          • Snoqualmie Pass
    		Cannon, B. (1975): Minerals of Washington, p.84
      • Skamania Co.
        • Washougal District
          • Washougal River
    		Cannon, B. (1975): Minerals of Washington, p.43,84
    Mineral and/or Locality
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