Lokkaite-(Y) Mineral Data + Say LOKKAITE-(Y)


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General Lokkaite-(Y) Information

Help on Chemical  Formula: Chemical Formula: CaY4(CO3)7·9(H2O)
Help on Composition: Composition: Molecular Weight = 977.90 gm
   Calcium    4.10 %  Ca    5.73 % CaO
   Yttrium   36.37 %  Y    46.18 % Y2O3
   Hydrogen   1.86 %  H    16.58 % H2O
   Carbon     8.60 %  C    31.50 % CO2
   Oxygen    49.08 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaY4(CO3)7·9(H2O)
Help on Environment: Environment: Alteration product of rare-earth minerals.
Help on IMA Status: IMA Status: Approved IMA 1970
Help on Locality: Locality: Pyoronmaa pegmatite, Kangasala, Finland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after Lauri Lokka (1875-1966), mineralogist and chief chemist, Geological Survey of Finland.
 

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Lokkaite-(Y) Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =6.4465:1:1.517
Help on Cell Dimensions: Cell Dimensions: a = 39.35, b = 6.104, c = 9.26, Z = 4; V = 2,224.18 Den(Calc)= 2.92
Help on Crystal System: Crystal System: Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: Pb2m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.808(1), 4.594(0.75), 3.902(0.6),
 

Physical Properties of Lokkaite-(Y)

Help on Color: Color: Snow white.
Help on Density: Density: 2.92
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Lokkaite-(Y)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.047 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.047 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2033,KPDmeas= 0.2033,KC= 0.2134
Help on Optical Data: Optical Data: Biaxial (?), a=1.569, b=1.592, g=1.62, bire=0.0510
 

Calculated Properties of Lokkaite-(Y)

Help on Electron Density: Electron Density:

relectron=2.84 gm/cc
note: rLokkaite-(Y) =2.92 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00123
Boson Index = 0.99877
Help on Photoelectric: Photoelectric:

PELokkaite-(Y) = 44.53 barns/electron
U=PELokkaite-(Y) x relectron= 126.58 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Lokkaite-(Y) is Not Radioactive

 

Lokkaite-(Y) Classification

Help on  Dana Class: Dana Class: 15.4.4.1 (15)Hydrated Carbonates
  (15.4)Dana Type
  (15.4.4)Dana Group
 
15.4.4.1 Lokkaite-(Y) CaY4(CO3)7·9(H2O) Pb2m mm2
Help on  Strunz Class: Strunz Class: V/D.03-60 V - Nitrates, Carbonates and Borates
  V/D - Water-bearing carbonates without unfamiliar anions
  V/D.03 - Calkinsite-(Ce) - Lokkaite-(Y) series
 
V/D.03-02 Adamsite-(Y)! NaY(CO3)2·6(H2O) P1 1
 
V/D.03-05 Shomiokite-(Y) Na3Y(CO3)3·3(H2O) Pbn21 mm2
 
V/D.03-10 Calkinsite-(Ce) (Ce,La)2(CO3)3·4(H2O) P 21221 2 2 2
 
V/D.03-20 Lanthanite-(La) (La,Ce)2(CO3)3·8(H2O) Pbnb 2/m 2/m 2/m
 
V/D.03-30 Lanthanite-(Ce) (Ce,La)2(CO3)3·8(H2O) Pbnb 2/m 2/m 2/m
 
V/D.03-40 Lanthanite-(Nd) (Nd,La)2(CO3)3·8(H2O) Pbnb 2/m 2/m 2/m
 
V/D.03-45 Tengerite-(Y) Y2(CO3)3·2-3(H2O) Pb21m mm2
 
V/D.03-50 Kimuraite-(Y) CaY2(CO3)4·6(H2O) Imm2,I mmm,I 222,I 212121 Ortho
 
V/D.03-55 Galgenbergite-(Ce)! Ca(REE)2(CO3)4·(H2O) P1 1
 
V/D.03-60 Lokkaite-(Y) CaY4(CO3)7·9(H2O) Pb2m mm2
 

Other Lokkaite-(Y) Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Lokkaite-(Y) :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas

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Print or Cut-and-Paste your Lokkaite-(Y) Specimen Label here :

Lokkaite-(Y)

CaY4(CO3)7·9(H2O)
Dana No: 15.4.4.1 Strunz No: V/D.03-60
Locality:

 

Notes:

 

 
   
 
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