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Sahamalite-(Ce)

Big Photo

Mountain Pass Mine (Sulfide Queen Mine; Bastnaesite deposit; Mountain Pass carbonatite), Ivanpah, Ivanpah District (Copper World District), Ivanpah Mts, San Bernardino Co., California, USA
© Pavel M. Kartashov

Formula:
(Mg,Fe)(Ce,La,Nd)
 
2
(CO
 
3
)
 
4
Colour:Colourless
Name:Named after Thure Georg Sahama, Professor of Geochemistry and Mineralogy, University of Helsinki. USA.
This page provides mineralogical data about Sahamalite-(Ce).

Classification of Sahamalite-(Ce)

IMA status:Approved
Strunz 8th edition ID:5/B.05-80
Nickel-Strunz 10th (pending) edition ID:5.AD.05

5 : CARBONATES (NITRATES)
A : Carbonates without additional anions, without H2O
D : With rare-earth elements (REE)
Dana 8th edition ID:14.4.2.1

14 : ANHYDROUS NORMAL CARBONATES
4 : Miscellaneous
Hey's CIM Ref.:11.8.21

11 : Carbonates
8 : Carbonates of the rare earths
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Type Occurrence of Sahamalite-(Ce)

Type Locality:Mountain Pass Mine (Sulfide Queen Mine; Bastnaesite deposit; Mountain Pass carbonatite), Ivanpah, Ivanpah District (Copper World District), Ivanpah Mts, San Bernardino Co., California, USA

Physical Properties of Sahamalite-(Ce)

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

Optical Data of Sahamalite-(Ce)

Type:Biaxial (-)
RI values: nα = 1.679 nβ = 1.776 nγ = 1.807
2V:Measured: 57° , Calculated: 56°
Maximum Birefringence:δ = 0.128

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

Chemical Properties of Sahamalite-(Ce)

Formula:
(Mg,Fe)(Ce,La,Nd)
 
2
(CO
 
3
)
 
4
Essential elements:C, Ce, Mg, O
All elements listed in formula:C, Ce, Fe, La, Mg, Nd, O

Relationship of Sahamalite-(Ce) to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
5.AD.15Petersenite-(Ce)
Na
 
4
(Ce,La,Nd)
 
2
(CO
 
3
)
 
5
5.AD.15Remondite-(Ce)
Na
 
3
(Ce,La,Ca,Na,Sr)
 
3
(CO
 
3
)
 
5
5.AD.15Remondite-(La)
Na
 
3
(La,Ce)
 
3
(CO
 
3
)
 
5
5.AD.20Paratooite-(La)
(REE,Ca,Na,Sr)
 
12
Cu
 
2
(CO
 
3
)
 
16
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
11.8.11Lokkaite-(Y)
Ca(Y,Gd,Nd,Dy)
 
4
[CO
 
3
]
 
7
 · 9H
 
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

Other Names for Sahamalite-(Ce)

Other Languages:
German:Sahamalith-(Ce)
Russian:Сахамалит-(Ce)

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 Sahamalite-(Ce)

Reference List:Jaffe, H.W., et al (1953), Sahamalite, a new rare earth carbonate mineral, American Mineralogist: 38: 721-754.

Tschermaks Mineralogische und Petrographische Mitteilungen (1983): 39-46.

Internet Links for Sahamalite-(Ce)

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  • Raman and XRD data at RRUFF project
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    Localities for Sahamalite-(Ce)

    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.
    USA
     
    • California
      • San Bernardino Co.
        • Ivanpah Mts
          • Ivanpah District (Copper World District)
            • Ivanpah
    		Jaffe, H.W., et al (1953), Sahamalite, a new rare earth carbonate mineral, Am.Min.: 38: 741.
    • Wyoming
      • Campbell Co.
        • Reno Junction
    		American Mineralogist, Volume 73, pages 1440-1448, 1988
    Mineral and/or Locality
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