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Epididymite

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Formula:
Na
 
2
Be
 
2
Si
 
6
O
 
15
· H
 
2
O
System:OrthorhombicColour:Colourless
Lustre:VitreousHardness:
Name:Derived from the Greek επ (near), and δίδνμος (twin) referring to the dimorphous relation with eudidymite.
Dimorph of:Eudidymite
This page provides mineralogical data about Epididymite.

Classification of Epididymite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:8/G.04-20
Nickel-Strunz 10th (pending) edition ID:9.DG.55

9 : SILICATES (Germanates)
D : Inosilicates
G : Inosilicates with 3-periodic single and multiple chains
Dana 8th edition ID:66.3.1.4

66 : INOSILICATES Double-Width,Unbranched Chains,(W=2)
3 : Amphiboles - Ca-Na subgroup
Hey's CIM Ref.:14.3.7

14 : Silicates not Containing Aluminum
3 : Silicates of Be
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Type Occurrence of Epididymite

Type Locality:Narsaarsuk pegmatite (Narssârssuk pegmatite), Narsaarsuk Plateau, Igaliku (Igaliko), Narsaq, Kujalleq, Greenland
Year of Discovery:1893

Physical Properties of Epididymite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent
Colour:Colourless
Hardness (Mohs):

Crystallography of Epididymite

Crystal System:Orthorhombic
Class (H-M):mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:Pnma
Cell Parameters:a = 12.7334(4) Å, b = 13.6298(5) Å, c = 7.3467(3) Å
Ratio:a:b:c = 0.934 : 1 : 0.539
Unit Cell Volume:V 1275.04 ų
Z:4
Crystal Atlas:
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Epididymite no.5 - Goldschmidt (1913-1926)
Epididymite no.13 - Goldschmidt (1913-1926)
Epididymite no.14 - Goldschmidt (1913-1926)

About Crystal Atlas

The mindat.org Crystal Atlas allows you to view a selection of crystal drawings of real and idealised crystal forms for this mineral and, in certain cases, 3d rotating crystal objects. The 3d models and HTML5 code are kindly provided by www.smorf.nl.

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Optical Data of Epididymite

Type:Biaxial (+)
RI values: nα = 1.544 nβ = 1.544 nγ = 1.546
2V:Measured: 22°
Maximum Birefringence:δ = 0.002

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low
Dispersion:weak

Chemical Properties of Epididymite

Formula:
Na
 
2
Be
 
2
Si
 
6
O
 
15
· H
 
2
O
Simplified for copy/paste:Na2Be2Si6O15·H2O
Essential elements:Be, H, Na, O, Si
All elements listed in formula:Be, H, Na, O, Si
Common Impurities:Al,Fe,Mg,Ca,K

Relationship of Epididymite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.DG.05Bustamite
CaMn
2+
 
(Si
 
2
O
 
6
)
9.DG.05Ferrobustamite
Ca(Fe
2+
 
,Ca,Mn
2+
 
)(Si
 
2
O
 
6
)
9.DG.05Pectolite
NaCa
 
2
(HSi
 
3
O
 
9
)
9.DG.05Sérandite
Na(Mn
2+
 
,Ca)
 
2
(HSi
 
3
O
 
9
)
9.DG.05Wollastonite
CaSiO
 
3
9.DG.05Wollastonite-1A
CaSiO
 
3
9.DG.07Cascandite
Ca(Sc,Fe
3+
 
)(HSi
 
3
O
 
9
)
9.DG.08Plombièrite
[Ca
 
4
Si
 
6
O
 
16
(OH)
 
2
· 2H
 
2
O]·(Ca·5H
 
2
O)
9.DG.10Clinotobermorite
[Ca
 
4
Si
 
6
O
 
17
· 2H
 
2
O]·(Ca·3H
 
2
O)
9.DG.10Riversideite
Ca
 
5
(HSi
 
3
O
 
9
)
 
2
· 2H
 
2
O
9.DG.10Tobermorite
[Ca
 
4
Si
 
6
O
 
17
· 2H
 
2
O]·(Ca·3H
 
2
O)
9.DG.15Foshagite
Ca
 
4
(Si
 
3
O
 
9
)(OH)
 
2
9.DG.20Jennite
Ca
 
9
(Si
 
3
O
 
9
)
 
2
(OH)
 
8
· 8H
 
2
O
9.DG.25Paraumbite
K
 
3
Zr
 
2
H(Si
 
3
O
 
9
)
 
2
· nH
 
2
O
9.DG.25Umbite
K
 
2
(Zr,Ti)Si
 
3
O
 
9
· H
 
2
O
9.DG.30Sørensenite
Na
 
4
SnBe
 
2
Si
 
6
O
 
16
(OH)
 
4
9.DG.35Xonotlite
Ca
 
6
(Si
 
6
O
 
17
)(OH)
 
2
9.DG.40Hillebrandite
Ca
 
2
(SiO
 
3
)(OH)
 
2
9.DG.45Zorite
Na
 
8
(Ti,Nb)
 
5
(Si
 
6
O
 
17
)
 
2
(OH,O)
 
5
· 14H
 
2
O
9.DG.45Chivruaiite
Ca
 
4
(Ti,Nb)
 
5
(Si
 
6
O
 
17
)
 
2
(OH,O)
 
5
· 13-14H
 
2
O
9.DG.50Haineaultite
(Na,Ca)
 
5
Ca(Ti,Nb)
 
5
(Si
 
6
O
 
17
)
 
2
(OH,F)
 
8
· 5H
 
2
O
9.DG.60Eudidymite
Na
 
2
Be
 
2
Si
 
6
O
 
15
· H
 
2
O
9.DG.65Elpidite
Na
 
2
ZrSi
 
6
O
 
15
· 3H
 
2
O
9.DG.70Fenaksite
(K,Na)
 
4
(Fe,Mn)
 
2
(Si
 
4
O
 
10
)
 
2
(OH,F)
9.DG.70Litidionite
CuNaKSi
 
4
O
 
10
9.DG.70Manaksite
KNaMnSi
 
4
O
 
10
9.DG.75Tinaksite
K
 
2
Na(Ca,Mn
2+
 
)
 
2
Ti[O|Si
 
7
O
 
18
(OH)]
9.DG.75Tokkoite
K
 
2
Ca
 
4
Si
 
7
O
 
17
(O,OH,F)
 
4
9.DG.75Senkevichite
CsKNaCa
 
2
Ti[O|Si
 
7
O
 
18
(OH)]
9.DG.80Canasite
K
 
2
Na
 
4
Ca
 
5
(Si
 
12
O
 
30
(OH,F)
 
4
9.DG.80Fluorcanasite
K
 
3
Na
 
3
Ca
 
5
Si
 
12
O
 
30
F
 
4
· H
 
2
O
9.DG.85Miserite
K(Ca,Ce)
 
4
Si
 
5
O
 
13
(OH)
 
3
9.DG.90Frankamenite
K
 
3
Na
 
3
Ca
 
5
(Si
 
12
O
 
30
)(F,OH)
 
4
· H
 
2
O
9.DG.92Charoite
(K,Sr)
 
15-16
(Ca,Na)
 
32
[Si
 
6
O
 
11
(O,OH)
 
6
]
 
2
[Si
 
12
O
 
18
(O,OH)
 
12
]
 
2
[Si
 
17
O
 
25
(O,OH)
 
18
]
 
2
(OH,F)
 
4
· ~3H
 
2
O
9.DG.95Yuksporite
(K,Ba)NaCa
 
2
(Si,Ti)
 
4
O
 
11
(F,OH) · H
 
2
O
9.DG.97Eveslogite
(Na,K,Ca,Sr,Ba)
 
48
[(Ti,Nb,Mn,Fe
2+
 
)
 
12
Si
 
48
O
 
144
(OH)
 
12
](F,OH,Cl)
 
14
Related Minerals - Hey's Index Grouping:

- +
14.3.1Phenakite
Be
 
2
SiO
 
4
14.3.2Bertrandite
Be
 
4
(Si
 
2
O
 
7
)(OH)
 
2
14.3.3Beryllite
Be
 
3
(SiO
 
4
)(OH)
 
2
· H
 
2
O
14.3.4Liberite
Li
 
2
BeSiO
 
4
14.3.5Chkalovite
Na
 
2
BeSi
 
2
O
 
6
14.3.6Eudidymite
Na
 
2
Be
 
2
Si
 
6
O
 
15
· H
 
2
O
14.3.8Gugiaite
Ca
 
2
Be(Si
 
2
O
 
7
)
14.3.9Jeffreyite
(Ca,Na)
 
2
(Be,Al)(Si
 
2
O
 
7
,HSi
 
2
O
 
7
)
14.3.10Semenovite-(Ce)
Na
 
8
Ca
 
2
FeBe
 
6
Ce
 
2
Si
 
14
O
 
40
(OH)
 
4
F
 
4
14.3.11Barylite
Be
 
2
Ba(Si
 
2
O
 
7
)
14.3.12Hingganite-(Ce)
(Ce,REE)
 
2
(□,Fe
2+
 
)Be
 
2
[SiO
 
4
]
 
2
(OH)
 
2
14.3.13Hingganite-(Yb)
(Yb,Y,REE)
 
2
□Be
 
2
[SiO
 
4
]
 
2
(OH)
 
2
14.3.14Hingganite-(Y)
(Y,REE,Ca)
 
2
(□,Fe
2+
 
)Be
 
2
[SiO
 
4
]
 
2
(OH)
 
2
14.3.15Minasgeraisite-(Y)
CaBe
 
2
Y
 
2
Si
 
2
O
 
10
14.3.16Sørensenite
Na
 
4
SnBe
 
2
Si
 
6
O
 
16
(OH)
 
4
14.3.17Trimerite
CaMn
2+
2
Be
 
3
(SiO
 
4
)
 
3
14.3.18Chiavennite
CaMnBe
 
2
Si
 
5
O
 
13
(OH)
 
2
· 2H
 
2
O
14.3.19Tvedalite
(Ca,Mn)
 
4
Be
 
3
Si
 
6
O
 
17
(OH)
 
4
· 3H
 
2
O
14.3.20Harstigite
Ca
 
6
(Mn,Mg)Be
 
4
Si
 
6
(O,OH)
 
24
14.3.21Sverigeite
NaMnMgSnBe
 
2
(SiO
 
4
)
 
3
(OH)
14.3.22Joesmithite
{Pb}{Ca
 
2
}{Mg
 
3
Fe
3+
2
}(Be
 
2
Si
 
6
O
 
22
)(OH)
 
2
14.3.23Gadolinite-(Y)
Y
 
2
Fe
2+
 
Be
 
2
Si
 
2
O
 
10
14.3.24Gadolinite-(Ce)
(Ce,La,Nd,Y)
 
2
Fe
2+
 
Be
 
2
Si
 
2
O
 
10
14.3.25Calciogadolinite-(Y)
(YCa)
 
2
Fe
3+
 
Be
 
2
[SiO
 
4
]
 
2
O
 
2

Other Names for Epididymite

Synonyms:
Epidymite
Other Languages:
German:Epididymit
Epidymit
Russian:Эпидидимит
Simplified Chinese:斜方板晶石
斜板晶石
板晶石
Spanish:Epididymita
Epidymita
Traditional Chinese:斜方板晶石
斜板晶石
板晶石

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.

References for Epididymite

Reference List:

- +
Flink, G. (1893): Om några mineral från Grönland. Geologiska Föreningen i Stockholms Förhandlingar. 15, 195-208

American Mineralogist. 55, 1541-1549.

Petersen, O. V & Johnsen, O. (2005): Minerals first described from Greenland. Canadian Mineralogist, Special Publication. 8, 184p

Diego Gatta, G., N. Rotiroti, G.J.McIntyre, A. Guastoni, & F. Nestola (2008): New insights into the crystal chemistry of euididymite and eudidymite from Molosa, Malawi: A single-crystal neutron diffraction study. American Mineralogist. 93, 1158-1165.

Internet Links for Epididymite

Search Engines:
  • Look for Epididymite on Google
  • Look for Epididymite images on Google
  • External Links:
  • Look for Epididymite on Webmineral
  • Look for Epididymite on Athena Mineralogy
  • Look for Epididymite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Epididymite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
  • SpiriferMinerals.com - high quality low prices
  • Buy minerals from YourMineralCollection
  • Find Epididymite on www.crystalclassics.co.uk
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Epididymite specimens for sale - minfind.com
  • High-end worldwide specimens & outstanding customer service
  • rare and unusual minerals mainly crystallized
  • Buy from Dave Bunk Minerals
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  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Rare and Unusual minerals at Mineralogical Research Company
  • Buy rare minerals from Excalibur Minerals
  • Specimens:The following Epididymite specimens are currently listed for sale on minfind.com.

    Localities for Epididymite

    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.
    Canada
     
    • Newfoundland and Labrador
      • Labrador
    • Québec
      • Montérégie
        • La Vallée-du-Richelieu RCM
          • Mont Saint-Hilaire
    Mandarino, J.A., Harris, D.C. and Bradley, J. (1965), Mangan-neptunite, epididymite, and new species from Mont St.-Hilaire. Canadian Mineralogist: 8: 398; Harris, D.C. and Mandarino, J.A. (1966), Epididymite from Mont St.-Hilaire, Quebec, Canada. Canadian Mineralogist: 8: 706-709; HORVÁTH, L., & GAULT, R.G. (1990) The mineralogy of Mont Saint Hilaire. Mineralogical Record, 21, 284 359.
        • Lajemmerais RCM
          • Varennes & St-Amable
    HORVÁTH, L., PFENNINGER HORVÁTH, E., GAULT, R.A., and TARASSOFF, P. (1998) Mineralogy of the Saint Amable sill, Varennes and Saint Amable, Québec, Canada. Mineralogical Record, 29, 83 118.
    Horváth, L., Pfenninger-Horváth, E., Gault, R. A., & Tarassoff, P. (1998): Mineralogy of the Saint-Amable Sill, Varennes and Saint-Amable, Québec. Mineralogical Record, 29: 83-118.
    Czech Republic
     
    • Moravia (Mähren; Maehren)
      • Vysočina Region
        • Žďár nad Sázavou
          • Věžná
    www.cseg.ca/conferences/2000/556.PDF.
    Petr Pauliš (2001): Nejzajímavější mineralogická naleziště Moravy a Slezska. Kuttna, Kutná Hora.; Mineralogical Magazine 1963 33 : 450-457; Canadian Mineralogist Vol.22, pp. 631-651 (1984)
    Greenland
     
    • Kujalleq
      • Narsaq
        • Igaliku (Igaliko)
          • Narsaarsuk Plateau
    Flink, G. (1893): Om några mineral från Grönland. Geologiska Föreningen i Stockholms Förhandlingar. 15, 195-208; Bull Min 84 (1961), 320; Montgomery, A. (1974): An American Mineralogist Part IV. Mineralogical Record 5 (3), 115-127
    Petersen, O.V. (2001): List of all minerals identified in the Ilímaussaq alkaline complex, South Greenland. Geology of Greenland Survey Bulletin. 190, 25-33
          • Taseq area
    Bohse, H., Petersen, O., Niedermayr, G. (2001): Notes on Leucophanite from the Ilimaussaq alkaline complex, South Greenland, Geology of Greenland Survey Bulletin, 190, 119-121
    Bohse, H., Petersen, O., Niedermayr, G. (2001): Notes on Leucophanite from the Ilimaussaq alkaline complex, South Greenland, Geology of Greenland Survey Bulletin, 190, 119-121
    Malawi
     
    • Zomba District
    Cairncross, B., Messner, K & Farquharson, E. (1999): Die Pegmatite des Mount Malosa bei Zomba, Malawi. LAPIS 24 (4), 22-32; American Mineralogist, Volume 94, pages 1216–1222, 2009; Guastoni, A., & Pezzotta, F. (2007). REE-mineral phases replacing helvite, niobian-rutile, bastnäsite-(Ce) from alkaline pegmatites of Mount Malosa, Zomba District, Malawi. Granitic Pegmatites: the State of the Art. Memorias, 8, 42-43.; Cairncross, B. (2002). Aegirine and Associated Minerals from Mount Malosa, Malawi. Rocks & Minerals, 77(1), 31-37.
    Norway
     
    • Oppland
      • Lunner
        • Nordmarka
    Raade, G. & Haug, J.(1982): Gjerdingen. Fundstelle seltener Mineralien in Norwegen. LAPIS 7, 9-15
    • Telemark
      • Porsgrunn
        • Langangen
          • Kokkersvold E18 roadcuts
    Raade, G., Åmli, R., Mladeck, H., Din. V. K., Larsen, A.O. & Åsheim, A. (1983): Chiavennite from syenite pegmatites in the Oslo Region, Norway. American Mineralogist. 68: 628-633
          • Rønningen (Skredderrønningen)
    Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
          • Slevolden
    Burvald, Ingulv (1993): To forekomster av nefelin-syenitt-pegmatitt i Telemark. STEIN 20 (3), 176-179
        • Langesundsfjorden
          • Siktesøya
    Larsen, A.O. & Raade, G. (1991): Gaidonnayite from the nepheline syenite pegmatite on Siktesøya in the southern part of the Oslo Region, norway. Norsk Geologisk Tidsskrift. 71: 303-306
    Larsen, A. O. (ed.) (2010): The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 p
        • Mørje
          • Sagåsen
    Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
    Larsen, A.O., Åsheim, A. and Gault, R. A. (2005): Minerals of the eudialyte group from the Sagåsen larvikite quarry, Porsgrunn, Norway. Norsk Bergverksmuseum Skrifter 30: 58-62
    Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
    • Vestfold
      • Larvik
        • Brunlanes
    Raade, G.; Åmli, R.; Mladeck, M.H.; Din, V.K.; Larsen, A.O. & Åsheim, A.(1983): Chiavennite from syenite pegmatites in the Oslo Region, Norway. American Mineralogist 68; 628-633
        • Hedrum
          • Lågendalen
    Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
    Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
        • Langesundsfjorden
    Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
          • Vesle Arøya
    Flink, G. (1899): Über einige seltene Mineralien aus der Gegend von Langesund in Norwegen. Bulletin of the Geological Institution of the University of Uppsala 4, 16-27; Engvoldsen, T., Andersen, F., Berge, S. A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18 (1), 15-71
        • Malerød
    Andresen, P. (2011): Mineralene fra Midtfjellet larvikittbrudd, Malerød, Larvik. Norsk Bergverksmuseum Skrift. 46: 41-47
    Andersen, F., Berge, S.A. & Burvald, I. (1996): Die Mineralien des Langesundsfjords und des umgebenden Larvikit-Gebietes, Oslo-Region, Norwegen. Mineralien-Welt 7(4), 21-100
        • Stavern (Fredriksvärn)
          • Fuglevika
    Kristiansen, R.(2005): Milarittgruppens mineraler i Norge. Norsk Berverksmuseum Skrifter 30:21-29
    Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
        • Tvedalen
    Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
    Larsen, A. O. (ed.) (2010): The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 p
    Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
    Larsen, A. O. (ed.) (2010): The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 p
    Nordrum, F. S. (2007): Nyfunn av mineraler i Norge 2006-2007. STEIN 34 (2), 14-26.
    Larsen, A. O. (ed.) (2010): The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 p
    Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
    Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
    Nordrum, F.S. (2008): Nyfunn av mineraler i Norge 2007-2008. STEIN 35 (2), 8-20; Andresen, P. (2013): Gedigent bly og andre spennende mineraler fra en unik pegmatitt i Tvedalen. Norsk Bergverksmuseum Skrifter. 50, 83-87
    Larsen, A. O.; Åsheim, A.; Raade, G. & Taftø, J. (1992): Tvedalite, (Ca,Mn)4Be3Si6O17(OH)4• 3H2O, a new mineral from syenite pegmatite in the Oslo Region, Norway, American Mineralogist 77, 438-443
      • Sandefjord
        • Haneholmveien
    Larsen, K. E. & Kolitsch, U. (2012): An unique mineral suite in a syenite pegmatite at Virikkollen, Sandefjord, Larvik Plutonic Complex, Norway. Norsk Bergverksmuseum Skrifter. 49, 35-44
        • Østerøya
    Berge, S. A. & Andersen, F. (2002): Mineralforekomster i Sandefjordområdet. Norsk Bergverksmuseums Skrift. 20, 50-59
        • Vesterøya
    Berge, S.A., Larsen, K.E. & Andersen, F. (2011): Buer, Vesterøya, Sandefjord- en typelokalitet for et nytt mineral. Norsk Bergverksmuseum Skrift. 46: 49-56
    Larsen, K.E. & Nordrum, F.S. (2013): Noen funn av mineraler i Norge 2012-2013. Norsk Bergverksmuseum Skrift. 50, 111-117
    Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71; Berge, S. A. (2013):Mineralene i Husebyyåsen feltspatbrudd, Vesterøya, Sandefjord. Norsk Bergverksmuseum Skrifter. 50, 93-99
    Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
    Knut Edvard Larsen collection
    Berge, S. A. (1978):Epididymitt. NAGS-nytt 5(1), 8
    Russia
     
    • Eastern-Siberian Region
      • Sakha Republic (Saha Republic; Yakutia)
        • Aldan Shield
          • Chara and Tokko Rivers Confluence
    [Lapis 1993:4 p.13-20]
    Konev, A.A., Vorobyev, E.I., and Lazebnik, K.A. (1996) The Mineralogy of the Murun Massif. Russian Academy of Science Press, Siberian Branch, Novosbirsk, Russia (in Russian).
      • Tuva Republic
    Tony Nikischer
        • Sangilen Upland
    Kapustin, Y. L., & Bykova, A. V. (1965). First find of hiortdahlite in the USSR. Doklady Akad. Nauk SSSR, 161, 121-124.
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Khibiny Massif
    [World of Stones 95:5-6, p64]
    World of Stones 95:5-6, p64; Men'shikov, Y.P., et al (2006), American Mineralogist: 91: 922-928.
              • Astrophyllite Stream
    Pekov et al (2005) New Data on Minerals Vol 40 pp11-16
    Arzamastsev, A., Yakovenchuk, V., Pakhomovsky, Y., & Ivanyuk, G. (2008). The Khibina and Lovozero alkaline massifs: Geology and unique mineralization. In Guidbook for 33rd International Geological Congress Excursion (No. 47, p. 58).
    Azarova, Y. V., Shlyukova, Z. V., Zolotarev Jr, A. A., & Organova, N. I. (2009). Burovaite-Ca,(Na, K) 4Ca2 (Ti, Nb) 8 [Si4O12] 4 (OH, O) 8· 12H2O, a new labuntsovite-group mineral species and its place in low-temperature mineral formation in pegmatites of the Khibiny pluton, Kola Peninsula, Russia. Geology of Ore Deposits, 51(8), 774-783.
            • Kukisvumchorr Mt
    Cámara, F., Sokolova, E., Abdu, Y., Hawthorne, F.C., Khomyakov, A.P. (2013): Kolskyite (Ca☐)Na2Ti4(Si2O7)2O4(H2O)7, a group-IV Ti-disilicate from the Khibiny Alkaline Massif, Kola Peninsula, Russia: description and crystal structure. Canadian Mineralogist, 51, 921-936.
    Pekov, I. et al (2003): New Data on Minerals: 38: 20-33.
          • Lovozero Massif
            • Alluaiv Mt
              • Umbozero mine (Umbozerskii mine; Umba Mine)
    Pekov I V, Chukanov N V, Khomyakov A P, Rastsvetaeva R K, Kucherinenko Y V, Nedel'ko V V (1999) Korobitsynite, Na3-x(Ti,Nb)2[Si4O12](OH,O)2·3-4H2O, a new mineral from Lovozero massif, Kola Peninsula, Zapiski Vserossijskogo Mineralogicheskogo Obshchestva, 128, issue 3 72-79; Pekov, I.V. (2000): Lovozero Massif. Moscow, Ocean Pictures Ltd, 480 pp.
    Sorokhtina N.V., Voloshin A.V., Pakhomovskii Ya.A., Selivanova E.A. (2004) The first find of daqingshanite-(Ce) on Kola peninsula, - Trudy 1 Fersmanovskoi Nauchnoi Sessii Kolskogo Otdeleniya VMO, Apatity,pt.1, pp. 34-36 (in Russ.)
    Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; Arzamastsev, A., Yakovenchuk, V., Pakhomovsky, Y., & Ivanyuk, G. (2008). The Khibina and Lovozero alkaline massifs: Geology and unique mineralization. In Guidbook for 33rd International Geological Congress Excursion (No. 47, p. 58).
    Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    I. Pekov (1998) Minerals First Discovered on the Territory of the former Soviey Union; New Data on Minerals M., 2004 Vol 39 pp 5-13; Pekov, I. V., Chukanov, N. V., Yamnova, N. A., Zadov, A. E., & Tarassoff, P. (2007). Gjerdingenite-Na and gjerdingenite-Ca, two new mineral species of the labuntsovite group. The Canadian Mineralogist, 45(3), 529-539
            • Kuftn'yun Mt
    Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    [World of Stones 95:5-6, p64]
    Pekov, I. et al (2003): New Data on Minerals: 38: 20-33.
    Tom Loomis specimen
    Tajikistan
     
    • Region of Republican Subordination
      • Tien Shan Mtn
        • Alai Range (Alayskiy)
    I. Pekov data pers. comm L. Horvath 2008
    USA
     
    • Massachusetts
      • Norfolk Co.
    • New Mexico
      • Otero Co.
        • Cornudas Mts
    XRD Laszlo Horvath collection specimen
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