Mindat Logo
Home Page Log In Messageboard The Mindat Directory
Register Search Pages Mineral Chatroom The Mindat Store

Cerite-(La)

This page is currently not sponsored. Click here to sponsor this page.
Big Photo

Hackman Valley, Yukspor Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
© Pavel M. Kartashov




Formula:
(La,Ce,Ca)
 
9
(Fe,Ca,Mg)(SiO
 
4
)
 
3
(HSiO
 
4
)
 
4
(OH)
 
3
System:TrigonalColour:Light yellow to ...
Hardness:5
Member of:Cerite Group
Name:La-dominant Cerite
Isostructural with:Whitlockite Group


The lanthanum and iron analogue of Cerite-(Ce). Isostructural with phosphates of Whitlockite group.

Classification of Cerite-(La)

IMA status:Approved 2001
Nickel-Strunz 10th (pending) edition ID:9.AG.20

9 : SILICATES (Germanates)
A : Nesosilicates
G : Nesosilicates with additional anions; cations in > [6] +- [6] coordination
mindat.org URL:http://www.mindat.org/min-26408.html
Please feel free to link to this page.

Type Occurrence of Cerite-(La)

Co-type Localities:Yukspor Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
Hackman Valley, Yukspor Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
General Appearance of Type Material:Porous pseudomorphs up to 7cm long after unidentified hexagonal prismatic mineral (Belovite-(Ce) ?). Framework-like aggregates of crystals up to 2mm within these pseudomorphs.
Year of Discovery:2001
Geological Setting of type material:In an aegirine-natrolite-microcline vein in foyaite.
Associated Minerals at type locality:
VanadiniteStrontianiteSphaleriteNatroliteMicrocline
IlmeniteGalenaFluorapatiteEdingtoniteChabazite-Ca
Cerite-(Ce)CatapleiiteBaryliteAncylite-(Ce)Anatase
Aegirine

Physical Properties of Cerite-(La)

Lustre:Vitreous
Diaphaneity (Transparency):Translucent
Colour:Light yellow to pinkish-brown
Streak:White
Hardness (Mohs):5
Tenacity:Brittle
Cleavage:None Observed
Fracture:Conchoidal
Density (measured):4.7 g/cm3
Density (calculated):4.75 g/cm3

Crystallography of Cerite-(La)

Crystal System:Trigonal
Class (H-M):3m - Ditrigonal Pyramidal
Space Group:R3c
Cell Parameters:a = 10.7493Å, c = 38.318Å
Ratio:a:c = 1 : 3.565
Unit Cell Volume:V 3834.4 ų
Z:6
Morphology:{102} and {001}, habit equant to tabular on {001}.
Twinning:None mentioned.
X-Ray Powder Diffraction:
d-spacingIntensity
3.53 (26)
3.47 (40)
3.31 (38)
3.10 (25)
2.958 (100)
2.833 (37)
2.790 (24)
2.689 (34)
1.949 (34)

Optical Data of Cerite-(La)

Type:Uniaxial (+)
RI values: nω = 1.810 nε = 1.820
Maximum Birefringence:δ = 0.010

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Pleochroism:Non-pleochroic

Chemical Properties of Cerite-(La)

Formula:
(La,Ce,Ca)
 
9
(Fe,Ca,Mg)(SiO
 
4
)
 
3
(HSiO
 
4
)
 
4
(OH)
 
3
Essential elements:Fe, H, La, O, Si
All elements listed in formula:Ca, Ce, Fe, H, La, Mg, O, Si
Analytical Data:Means of 42 to 70 sets of electron microprobe data (with H2O by Penfield method) 
MgO (0.51)
CaO (5.09)
SrO (1.97)
Fe2O3 (1.40)
La2O3 (37.57)
Ce2O3 (23.67)
Pr2O3 (0.61)
Nd2O3 (1.48)
Sm2O3 (0.10)
Gd2O3 (0.24)
SiO2 (22.38)
P2O5 (0.63)
H2O (3.20)

Total: 98.85 wt.%
Empirical Formula:
(La
 
4.26
Ce
 
2.67
Ca
 
1.38
Sr
 
0.35
Nd
 
0.16
Pr
 
0.07
Gd
 
0.02
Sm
 
0.01
)
 
Σ8.92
(Fe
 
0.32
Ca
 
0.30
Mg
 
0.23
)
 
Σ0.85
(SiO
 
4
)
 
3.00
[(Si
 
0.84
P
 
0.16
)
 
Σ1.00
O
 
3.11
(OH)]
 
4
(OH)
 
2.56

Relationship of Cerite-(La) to other Species

Member of:Cerite Group
Other Members of Group:

- +
Aluminocerite-(Ce)
(Ce,La,Ca)
 
9
(Al,Fe
3+
 
)(SiO
 
4
)
 
3
(HSiO
 
4
)
 
4
(OH)
 
3
Cerite-(Ce)
(Ce,Ca)
 
9
(Mg,Fe)(SiO
 
4
)
 
3
(HSiO
 
4
)
 
4
(OH)
 
3
Related Minerals - Nickel-Strunz Grouping):

- +
9.AG.05Abswurmbachite
CuMn
3+
6
(SiO
 
4
)O
 
8
9.AG.05Braunite
Mn
2+
 
Mn
3+
6
(SiO
 
4
)O
 
8
9.AG.05Neltnerite
CaMn
3+
6
(SiO
 
4
)O
 
8
9.AG.05Braunite-II
CaMn
3+
14
(SiO
 
4
)O
 
20
9.AG.10Långbanite
(Mn
2+
 
,Ca)
 
4
(Mn
3+
 
,Fe
3+
 
)
 
9
Sb
5+
 
(SiO
 
4
)
 
2
O
 
16
9.AG.15Malayaite
CaSn(SiO
 
4
)O
9.AG.15Titanite
CaTi(SiO
 
4
)O
9.AG.15Vanadomalayaite
CaV
4+
 
(SiO
 
4
)O
9.AG.15Natrotitanite
(Na
 
0.5
Y
 
0.5
)Ti(SiO
 
4
)O
9.AG.20Cerite-(Ce)
(Ce,Ca)
 
9
(Mg,Fe)(SiO
 
4
)
 
3
(HSiO
 
4
)
 
4
(OH)
 
3
9.AG.20Aluminocerite-(Ce)
(Ce,La,Ca)
 
9
(Al,Fe
3+
 
)(SiO
 
4
)
 
3
(HSiO
 
4
)
 
4
(OH)
 
3
9.AG.25Trimounsite-(Y)
Y
 
2
Ti
 
2
(SiO
 
4
)O
 
5
9.AG.25Yftisite-(Y)
(Y,Dy,Er)
 
4
(Ti,Sn)(SiO
 
4
)
 
2
O(F,OH)
 
6
9.AG.30Sitinakite
KNa
 
2
Ti
 
4
(SiO
 
4
)
 
2
O
 
5
(OH) · 4H
 
2
O
9.AG.35Kittatinnyite
Ca
 
2
Mn
 
2
Mn(SiO
 
4
)
 
2
(OH)
 
4
 · 9H
 
2
O
9.AG.40aNatisite
Na
 
2
Ti(SiO
 
4
)O
9.AG.40bParanatisite
Na
 
2
Ti(SiO
 
4
)O
9.AG.45Törnebohmite-(Ce)
(Ce,La)
 
2
Al(SiO
 
4
)
 
2
(OH)
9.AG.45Törnebohmite-(La)
(La,Ce)
 
2
Al(SiO
 
4
)
 
2
(OH)
9.AG.50Kuliokite-(Y)
Y
 
4
Al(SiO
 
4
)
 
2
(OH)
 
2
F
 
5
9.AG.55Chantalite
CaAl
 
2
(SiO
 
4
)(OH)
 
4
9.AG.60Mozartite
CaMn
3+
 
(SiO
 
4
)(OH)
9.AG.60Vuagnatite
CaAl(SiO
 
4
)(OH)
9.AG.65Hatrurite
Ca
 
3
(SiO
 
4
)O
9.AG.70Jasmundite
Ca
 
11
(SiO
 
4
)
 
4
O
 
2
S
9.AG.75Afwillite
Ca
 
3
(HSiO
 
4
)
 
2
 · 2H
 
2
O
9.AG.80Bultfonteinite
Ca
 
2
(HSiO
 
4
)F · H
 
2
O
9.AG.85Zoltaiite
BaV
4+
2
V
3+
12
(SiO
 
4
)
 
2
O
 
19
9.AG.90Tranquillityite
(Fe
2+
 
,Ca)
 
8
(Zr,Y)
 
2
Ti
 
3
(SiO
 
4
)
 
3
O
 
4

Other Names for Cerite-(La)

Synonyms:
IMA2001-042
Other Languages:
Russian:Церит-(La)

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 Cerite-(La)

Reference List:

- +
Canadian Mineralogist: 40: 1177-1184.

Internet Links for Cerite-(La)

Search Engines:
  • Look for Cerite-(La) on Google
  • Look for Cerite-(La) images on Google
    • External Links:
  • Look for Cerite-(La) on Webmineral
  • Look for Cerite-(La) on Athena Mineralogy
  • Look for Cerite-(La) on Wikipedia
  • Look for Cerite-(La) on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
    • Mineral Dealers:
  • Search for minerals at Heliodor
  • High-end worldwide specimens & outstanding customer service
  • Minerals from Darwin Natural History
  • Rare and Unusual minerals at Mineralogical Research Company
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Buy RARE Minerals from Rocks of Africa
  • Buy from David K Joyce minerals
  • Cerite-(La) specimens for sale - minfind.com
  • Fine Minerals from Weinrich Minerals, Inc.
  • Search for - Cerite-(La) - on e-Rocks Mineral Sales & Auctions
  • rare and unusual minerals mainly crystallized
  • Buy fine minerals and gemstones from Pala International
    • Jobs:
  • Mining & Geology Jobs

    • Localities for Cerite-(La)

    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.
    Hide Locality List
    (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.
    Madagascar
     
    • Antsiranana Province
      • Diana Region (Northern Region)
        • Ambanja District
          • Ampasindava Peninsula
    		G. Estrade/University of Toulouse personal communication to W.Hampel, 2011
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Khibiny Massif
    		CanMin 40: 1177-1184
    Pekov I.V. (2007) New minerals from former Soviet Union countries 1998-2006, - Mineralogical Almanac, v.11, p. 15.
    Mineral and/or Locality
    Search Google
     
    Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. 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 thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
    Current server date and time: June 16, 2013 22:00:40
    Mineral and Locality Search
    Mineral:
    and/or Locality:
    Options
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds