Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (2 online) Mindat Auctions

Lokkaite-(Y)

Big Photo

Tangen Feldspar Quarry, Kragerø, Telemark, Norway
© Knut Eldjarn

Show Lokkaite-(Y) Photos (3)
Formula:
Ca(Y,Gd,Nd,Dy)
 
4
[CO
 
3
]
 
7
 · 9H
 
2
O
System:OrthorhombicColour:snow white
This page provides mineralogical data about Lokkaite-(Y).

Classification of Lokkaite-(Y)

IMA status:Approved 1969
Strunz 8th edition ID:5/D.03-60
Nickel-Strunz 10th (pending) edition ID:5.CC.15

5 : CARBONATES (NITRATES)
C : Carbonates without additional anions, with H2O
C : With rare earth elements (REE)
Dana 8th edition ID:15.4.4.1

15 : HYDRATED NORMAL CARBONATES
4 : AmBn(XO3)p·xH2O, with (m+n):p < 1:1
Hey's CIM Ref.:11.8.11

11 : Carbonates
8 : Carbonates of the rare earths
mindat.org URL:http://www.mindat.org/min-2427.html
Please feel free to link to this page.

Type Occurrence of Lokkaite-(Y)

Type Locality:Pyörönmaa pegmatite, Kangasala, Länsi-Suomen Lääni, Finland

Physical Properties of Lokkaite-(Y)

Colour:snow white
Streak:white

Crystallography of Lokkaite-(Y)

Crystal System:Orthorhombic

Optical Data of Lokkaite-(Y)

Type:Biaxial
RI values: nα = 1.569 nβ = 1.592 nγ = 1.620
Maximum Birefringence:δ = 0.051

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

Chemical Properties of Lokkaite-(Y)

Formula:
Ca(Y,Gd,Nd,Dy)
 
4
[CO
 
3
]
 
7
 · 9H
 
2
O
Essential elements:C, Ca, H, O, Y
All elements listed in formula:C, Ca, Dy, Gd, H, Nd, O, Y

Relationship of Lokkaite-(Y) to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
5.CC.05Donnayite-(Y)
Sr
 
3
NaCaY(CO
 
3
)
 
6
·3H
 
2
O
5.CC.05Ewaldite
Ba(Ca,Y,Na,K)(CO
 
3
)
 
2
5.CC.05Mckelveyite-(Nd)
(Ba,Sr)(Nd,Ce,La)(CO
 
3
)
 
2
·4-10H
 
2
O
5.CC.05Mckelveyite-(Y)
Ba
 
3
Na(Ca,U)Y(CO
 
3
)
 
6
·3H
 
2
O
5.CC.05Weloganite
Sr
 
3
Na
 
2
Zr(CO
 
3
)
 
6
·3H
 
2
O
5.CC.10Tengerite-(Y)
Y
 
2
[CO
 
3
]
 
3
 · 2-3H
 
2
O
5.CC.15Kimuraite-(Y)
Ca(Y,Nd)
 
2
[CO
 
3
]
 
4
 · 6H
 
2
O
5.CC.20Shomiokite-(Y)
Na
 
3
Y[CO
 
3
]
 
3
 · 3H
 
2
O
5.CC.25Calkinsite-(Ce)
(Ce,La)
 
2
[CO
 
3
]
 
3
 · 4H
 
2
O
5.CC.25Lanthanite-(Ce)
(Ce,La,Nd)
 
2
[CO
 
3
]
 
3
 · 8H
 
2
O
5.CC.25Lanthanite-(La)
(La,Ce)
 
2
[CO
 
3
]
 
3
 · 8H
 
2
O
5.CC.25Lanthanite-(Nd)
(Nd,La)
 
2
[CO
 
3
]
 
3
 · 8H
 
2
O
5.CC.30Adamsite-(Y)
NaY[CO
 
3
]
 
2
 · 6H
 
2
O
5.CC.35Decrespignyite-(Y)
Cu(Y,REE)
 
4
(CO
 
3
)
 
4
Cl(OH)
 
5
·2H
 
2
O
5.CC.40Galgenbergite-(Ce)
Ca(Ce,La,Nd)
 
2
[CO
 
3
]
 
4
 · H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
11.8.1Calkinsite-(Ce)
(Ce,La)
 
2
[CO
 
3
]
 
3
 · 4H
 
2
O
11.8.2Lanthanite-(La)
(La,Ce)
 
2
[CO
 
3
]
 
3
 · 8H
 
2
O
11.8.3Lanthanite-(Ce)
(Ce,La,Nd)
 
2
[CO
 
3
]
 
3
 · 8H
 
2
O
11.8.4Lanthanite-(Nd)
(Nd,La)
 
2
[CO
 
3
]
 
3
 · 8H
 
2
O
11.8.5Hydroxylbastnäsite-(Ce)
(Ce,La)[(OH,F)|CO
 
3
]
11.8.6Hydroxylbastnäsite-(Nd)
(Nd,Ce,La)[(OH,F)|CO
 
3
]
11.8.7Hydroxylbastnäsite-(La)
(La,Ce)[(OH,F)|CO
 
3
]
11.8.8Remondite-(Ce)
Na
 
3
(Ce,La,Ca,Na,Sr)
 
3
(CO
 
3
)
 
5
11.8.9Tengerite-(Y)
Y
 
2
[CO
 
3
]
 
3
 · 2-3H
 
2
O
11.8.10Kimuraite-(Y)
Ca(Y,Nd)
 
2
[CO
 
3
]
 
4
 · 6H
 
2
O
11.8.12Calcioancylite-(Nd)
(Nd,Ce)
 
3
Ca(CO
 
3
)
 
4
(OH)
 
3
·H
 
2
O
11.8.13Calcioancylite-(Ce)
(Ca,Sr)Ce(CO
 
3
)
 
2
OH·H
 
2
O
11.8.14Burbankite
(Na,Ca)
 
3
(Sr,Ba,Ce)
 
3
(CO
 
3
)
 
5
11.8.15Khanneshite
(Na,Ca)
 
3
(Ba,Sr,Ce,Ca)
 
3
(CO
 
3
)
 
5
11.8.16Donnayite-(Y)
Sr
 
3
NaCaY(CO
 
3
)
 
6
·3H
 
2
O
11.8.17Carbocernaite
(Ca,Na)(Sr,Ce,Ba)(CO
 
3
)
 
2
11.8.18Ancylite-(Ce)
SrCe[OH|(CO
 
3
)
 
2
] · H
 
2
O
11.8.19Ewaldite
Ba(Ca,Y,Na,K)(CO
 
3
)
 
2
11.8.20Mckelveyite-(Y)
Ba
 
3
Na(Ca,U)Y(CO
 
3
)
 
6
·3H
 
2
O
11.8.21Sahamalite-(Ce)
(Mg,Fe)(Ce,La,Nd)
 
2
(CO
 
3
)
 
4

Other Names for Lokkaite-(Y)

Synonyms:
IMA1969-045Lokkaite
Other Languages:
German:Lokkait
Spanish:Lokkaita

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 Lokkaite-(Y)

Reference List:American Mineralogist (1971): 56: 1838.

American Mineralogist (1986): 71: 1028-1033.

American Mineralogist (1993): 78: 425-432.

Internet Links for Lokkaite-(Y)

Search Engines:
  • Look for Lokkaite-(Y) on Google
  • Look for Lokkaite-(Y) images on Google
    • External Links:
  • Look for Lokkaite-(Y) on Webmineral
  • Look for Lokkaite-(Y) on Athena Mineralogy
  • Look for Lokkaite-(Y) on Wikipedia
  • Look for Lokkaite-(Y) on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Lokkaite-(Y) in the Natural History Museum (London) online catalogue
  • Lokkaite-(Y) details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Wilensky Fine Minerals
  • Buy fine minerals and gemstones from Pala International
  • rare and unusual minerals mainly crystallized
  • The Arkenstone - Fine Minerals
  • Fine Minerals from Dan Weinrich Minerals
  • Search for - Lokkaite-(Y) - on e-Rocks Mineral Sales & Auctions
  • Lapis Mineral Magazin
  • Rare and Unusual minerals at Mineralogical Research Company
  • Buy minerals from Mineralium.com
  • Buy from David K Joyce minerals
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • High-end worldwide specimens & outstanding customer service
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to sponsor this page.

    Localities for Lokkaite-(Y)

    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.
    Canada
     
    • Québec
      • Outaouais
        • Les Collines-de-l'Outaouais RCM
          • Val-des-Monts
    		Canadian Mineralogist Vol. 12, pp. 298-298 (1974)
    Finland
     
    • Länsi-Suomen Lääni
      • Kangasala
    		Am Min 71 (1986), 1028; Perttunen 1971 Bulletin of the Geological Society of Finland 43
    Japan
     
    • Kyushu Island
      • Saga Prefecture
        • Higashi-Matsuura-gun
          • Hizen-cho
    		American Mineralogist: 71(7-8): 1028-1033.
    Norway
     
    • Nordland
      • Tysfjord
    		R. Kristiansen (1975, pers. com.); Neumann (1985, p. 102).
    • Telemark
      • Kragerø
    		Kristiansen, R.(1978):"Lokkaitt, (Y,Ca)2(CO3)3 x 2H2O, ett nytt mineral for Norge" NAGS-nytt 5(4), 26-27 (in norwegian); Neumann (1985, p. 102).
      • Skien
    		R. Kristiansen (1975, pers. com.); Neumann (1985, p. 102).
    Sweden
     
    • Lappland
      • Jokkmokk
    		No reference listed
    • Uppland
      • Vaxholm
        • Resarö
    		No reference listed
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 11th Nov 2009 17:55:12