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Calkinsite-(Ce)

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Formula:
(Ce,La)2(CO3)3 · 4H2O
System:
Orthorhombic
Colour:
pale yellow
Hardness:
Name:
Named in honor of Frank Cathcart Calkins (1878–1974), geologist with the U.S. Geological Survey. The suffix "-(Ce)" designates the dominant rare earth element in the composition.
This page provides mineralogical data about Calkinsite-(Ce).

Classification of Calkinsite-(Ce)

Approved
5.CC.25

5 : CARBONATES (NITRATES)
C : Carbonates without additional anions, with H2O
C : With rare earth elements (REE)
15.4.1.1

15 : HYDRATED NORMAL CARBONATES
4 : AmBn(XO3)p·xH2O, with (m+n):p < 1:1
11.8.1

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

Physical Properties of Calkinsite-(Ce)

Colour:
pale yellow
Hardness (Mohs):
Cleavage:
Perfect

Crystallography of Calkinsite-(Ce)

Crystal System:
Orthorhombic

Optical Data of Calkinsite-(Ce)

Type:
Biaxial (-)
RI values:
nα = 1.569 nβ = 1.657 nγ = 1.686
2V:
Measured: 54° , Calculated: 56°
Max Birefringence:
δ = 0.117
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v or r < v

Chemical Properties of Calkinsite-(Ce)

Formula:
(Ce,La)2(CO3)3 · 4H2O
Essential elements:
All elements listed in formula:

Relationship of Calkinsite-(Ce) to other Species

5.CC.05Donnayite-(Y)NaCaSr3Y(CO3)6 · 3H2O
5.CC.05EwalditeBa(Na,Ca,Y,Ce,K)(CO3)2 · 2.6H2O
5.CC.05Mckelveyite-(Nd)(Ba,Sr)(Nd,Ce,La)(CO3)2 · 4-10H2O
5.CC.05Mckelveyite-(Y)NaCaBa3Y(CO3)6 · 3H2O
5.CC.05WeloganiteNa2Sr3Zr(CO3)6 · 3H2O
5.CC.10Tengerite-(Y)Y2(CO3)3 · 2-3H2O
5.CC.15Kimuraite-(Y)Ca(Y,Nd)2(CO3)4 · 6H2O
5.CC.15Lokkaite-(Y)Ca(Y,Gd,Nd,Dy)4(CO3)7 · 9H2O
5.CC.20Shomiokite-(Y)Na3Y[CO3]3 · 3H2O
5.CC.25Lanthanite-(Ce)(Ce,La,Nd)2(CO3)3 · 8H2O
5.CC.25Lanthanite-(La)(La,Ce)2(CO3)3 · 8H2O
5.CC.25Lanthanite-(Nd)(Nd,La)2(CO3)3 · 8H2O
5.CC.30Adamsite-(Y)NaY[CO3]2 · 6H2O
5.CC.35Decrespignyite-(Y)Cu(Y,REE)4(CO3)4(OH)5Cl · 2H2O
5.CC.40Galgenbergite-(Ce)Ca(Ce,La,Nd)2(CO3)4 · H2O
11.8.2Lanthanite-(La)(La,Ce)2(CO3)3 · 8H2O
11.8.3Lanthanite-(Ce)(Ce,La,Nd)2(CO3)3 · 8H2O
11.8.4Lanthanite-(Nd)(Nd,La)2(CO3)3 · 8H2O
11.8.5Hydroxylbastnäsite-(Ce)(Ce,La)(CO3)(OH,F)
11.8.6Hydroxylbastnäsite-(Nd)(Nd,Ce,La)(CO3)(OH,F)
11.8.7Hydroxylbastnäsite-(La)(La,Nd,Ce)(CO3)(OH,F)
11.8.8Rémondite-(Ce)Na3(Ce,La,Ca,Na,Sr)3(CO3)5
11.8.9Tengerite-(Y)Y2(CO3)3 · 2-3H2O
11.8.10Kimuraite-(Y)Ca(Y,Nd)2(CO3)4 · 6H2O
11.8.11Lokkaite-(Y)Ca(Y,Gd,Nd,Dy)4(CO3)7 · 9H2O
11.8.12Calcioancylite-(Nd)Ca(Nd,La,Ce)(CO3)2(OH).H2O
11.8.13Calcioancylite-(Ce)(Ca,Sr)Ce(CO3)2(OH) · H2O
11.8.14Burbankite(Na,Ca)3(Sr,Ba,Ce)3(CO3)5
11.8.15Khanneshite(Na,Ca)3(Ba,Sr,Ce,Ca)3(CO3)5
11.8.16Donnayite-(Y)NaCaSr3Y(CO3)6 · 3H2O
11.8.17Carbocernaite(Ca,Na)(Sr,Ce,Ba)(CO3)2
11.8.18Ancylite-(Ce)SrCe(CO3)2(OH) · H2O
11.8.19EwalditeBa(Na,Ca,Y,Ce,K)(CO3)2 · 2.6H2O
11.8.20Mckelveyite-(Y)NaCaBa3Y(CO3)6 · 3H2O
11.8.21Sahamalite-(Ce)(Mg,Fe)(Ce,La,Nd)2(CO3)4

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Calkinsite-(Ce)

Reference List:
American Mineralogist: 38: 1169-1183.

Internet Links for Calkinsite-(Ce)

Localities for Calkinsite-(Ce)

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Afghanistan
 
  • Helmand Province (Hilmend Province; Hilmand Province)
    • Dushan District
      • Khanneshin complex
Yeremenko, G.K., and Bel’ko, V.A. (1982): Zap. Vses. Mineral. Obshch. 111, 321–324; New Data on Minerals (2004): 39: 50-64
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Liberec Region
Scharm, B.: Přehled minerálů nalezených v oblasti uranových koncentrací v severočeské křídě. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1995, roč. 3, s. 169-172.
    • Plzeň Region
      • Klatovy (Klattau)
        • Horažďovice
          • Malý Bor
Černý P., Hofman P., Hofmanová R.: Wolframové rudy Horažďovicka. Minerál, 2009, 17, 1, 8-15.
Italy
 
  • Tuscany
    • Grosseto Province
      • Montieri
Bazzoni C. et al., 2003. Il "Filone di Boccheggiano": miniere e minerali. Riv. Miner. Ital., 1: 78-89
Japan
 
  • Shikoku Island
    • Kagawa Prefecture
Minakawa (1985) Chigaku Kenkyu, 36, 61-64.
USA (TL)
 
  • Montana
    • Hill Co.
      • Bearpaw Mts
        • Big Sandy Creek
American Mineralogist: 38: 1169-1183.
New Data on Minerals (2004): 39: 50-64
Mineral and/or Locality  
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