General Kozoite-(La) Information
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Chemical Formula: |
La(CO3)(OH) |
Composition: |
Molecular Weight = 190.98 gm |
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Strontium 0.92 % Sr 1.09 % SrO |
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Calcium 4.41 % Ca 6.17 % CaO |
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Lanthanum 29.82 % La 34.97 % La2O3 |
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Praeseodymium 3.69 % Pr 4.32 % Pr2O3 |
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Samarium 0.79 % Sm 0.91 % Sm2O3 |
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Gadolinium 1.65 % Gd 1.90 % Gd2O3 |
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Yttrium 3.26 % Y 4.14 % Y2O3 |
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Hydrogen 0.65 % H 5.85 % H2O |
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Carbon 6.29 % C 23.04 % CO2 |
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Neodymium 15.10 % Nd 17.62 % Nd2O3 |
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Oxygen 33.43 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
La0.41Ca0.21Nd0.2Y0.07Pr0.05Sr0.02Gd0.02Sm0.01(CO3)(OH)0.74·0.25(H2O) |
Environment: |
Occurs in cavities in an alkaline olivine basalt associated wth kozoite0(Nd). Ancylite group. |
IMA Status: |
Approved IMA 2003 (Dana # Added) |
Locality: |
Mitsukoshi, Saga Prefecture, Japan. Link to MinDat.org Location Data. |
Name Origin: |
Named as the La-dominant analog of kozoite-(Nd). |
Synonym: |
IMA2002-054 |
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Kozoite-(La) Image |
Images:
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Kozoite-(La) Kozoite-(Nd)
Comments: Backscatter electron image of polished section through a sperical aggregate showing the zonation form kosoite-(La) to kosolite-(Nd). (JMPS, v 98, p 138).
Location: Cavity in alkaline basalt near Mitsukoshi, Saga Prefecture, Japan.
Scale: See Image.
© JMPS |
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Kozoite-(La) Crystallography
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Axial Ratios: |
a:b:c =0.5856:1:0.8489 |
Cell Dimensions: |
a = 4.986, b = 8.513, c = 7.227, Z = 4; V = 306.76 Den(Calc)= 4.14 |
Crystal System: |
Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pmcn |
X Ray Diffraction: |
By Intensity(I/Io): 4.31(1)(110,020), 3.69(0.72)(111,021), 2.93(0.57)(121,102),2.33(0.5)(131), 2.06(0.48)(221), 1.994(0.35)(212), 2.64(0.3), 2.49(0.29), |
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Physical Properties of Kozoite-(La)
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Color: |
Pale pinkish purple, White. |
Diaphaniety: |
Translucent |
Habit: |
Spherical - Spherical, rounded aggregates. |
Luster: |
Vitreous (Glassy) |
Streak: |
white |
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Optical Properties of Kozoite-(La)
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Optical Data: |
Biaxial (?) |
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NCalc= 1.73 - from Gladstone-Dale relationship (KC = 0.1756) where Ncalc=Dcalc*KC+1 |
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Calculated Properties of Kozoite-(La)
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Electron Density: |
relectron=3.77 gm/cc note: rKozoite-(La) =4.14 gm/cc. |
Fermion Index |
Fermion Index = 0.04644 Boson Index = 0.95356 |
Photoelectric: |
PEKozoite-(La) = 270.21 barns/electron U=PEKozoite-(La) x relectron=1,020.00 barns/cc. |
Radioactivity: |
GRapi = 49,692.11 (Gamma Ray American Petroleum Institute Units)
Kozoite-(La) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.
Estimated Maximum U.S. Postal Shipping Size
(10 mRem/hr limit, Unshielded 10 cm box)
612.10 ±153.03 grams of pure Kozoite-(La) .
Estimated Radioactivity from Kozoite-(La) - weak
Specimen Size Weight/Volume (Sphere) * |
Calculated Activity Bequerols (Bq) |
Calculated Activity Curies (Ci) |
Estimated Activity GR(api) |
Estimated Exposure (mRem**)/hr If Held in Hand For One Hour |
| 1000 gm / 7.73 cm |
1,144,472 |
3.09E-05 |
49,692.11 |
16.34 |
| 100 gm / 3.59 cm |
114,447 |
3.09E-06 |
4,969.21 |
1.63 |
| 10 gm / 1.66 cm |
11,445 |
3.09E-07 |
496.92 |
0.16 |
| 1 gm / 7.73 mm |
1,144 |
3.09E-08 |
49.69 |
0.02 |
| 0.1 gm / 3.59 mm |
114 |
3.09E-09 |
4.97 |
0.00 |
| 0.01 gm / 1.66 mm |
11 |
3.09E-10 |
0.50 |
0.00 |
| 0.001 gm / 0.77 mm |
1 |
3.09E-11 |
0.05 |
0.00 |
Weight of pure Kozoite-(La) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.14 gm/cc.*
Goverment Estimate of Average Annual Exposure (
360 mRem)
**
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem
Estimated Thorium Activity ( 2.55 % Th) From Sum REE Elements (51.05 % REE)
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Kozoite-(La) Classification
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Dana Class: |
16b.1.1.7 (16b)Carbonates - Hydroxyl or Halogen |
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(16b.1)where (A)m (B)n (XO3)p Zq, with (m+n):p=1:1 |
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(16b.1.1)Ancylite group |
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16b.1.1.1 Ancylite-(Ce) SrCe(CO3)2(OH)·(H2O) Pmcn 2/m 2/m 2/m |
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16b.1.1.2 Calcio-ancylite-(Ce) CaCe(CO3)2(OH)·(H2O) P mmm 2/m 2/m 2/m |
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16b.1.1.3 Calcio-ancylite-(Nd) CaNd(CO3)2(OH)·(H2O) Pm m |
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16b.1.1.4 Gysinite-(Nd) Pb(Nd,La)(CO3)2(OH)·(H2O) Pmcn 2/m 2/m 2/m |
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16b.1.1.5 Ancylite-(La)! Sr(La,Ce)(CO3)2(OH)·(H2O) Pmcn 2/m 2/m 2/m |
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16b.1.1.6 Kozoite-(Nd)! (Nd,La,Sm,Pr)(CO3)(OH) Pmcn 2/m 2/m 2/m |
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16b.1.1.7 Kozoite-(La) ! La(CO3)(OH) Pmcn 2/m 2/m 2/m |
Strunz Class: |
V/C.07-62 V - Nitrates, Carbonates and Borates |
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V/C - Waterfree carbonates with unfamiliar anions |
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V/C.07 - Bastnäsite-(Y) - Mineevite-(Y) series |
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V/C.07-10 Bastnasite-(Y) Y(CO3)F P 62c 6 m2 |
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V/C.07-20 Bastnasite-(La) La(CO3)F P 62c 6 m2 |
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V/C.07-30 Bastnasite-(Ce) Ce(CO3)F P 62c 6 m2 |
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V/C.07-40 Hydroxylbastnasite-(La) La(CO3)(OH) C 2221 2 2 2 |
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V/C.07-50 Hydroxylbastnasite-(Ce) Ce(CO3)(OH) P 62c 6 m2 |
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V/C.07-60 Hydroxylbastnasite-(Nd) Nd(CO3)(OH) P 62c 6 m2 |
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V/C.07-61 Kozoite-(Nd)! (Nd,La,Sm,Pr)(CO3)(OH) Pmcn 2/m 2/m 2/m |
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V/C.07-62 Kozoite-(La) La(CO3)(OH) Pmcn 2/m 2/m 2/m |
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V/C.07-64 Horvathite-(Y)! NaY(CO3)F2 Pmcn 2/m 2/m 2/m |
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V/C.07-70 Parisite-(Ce) Ca(Ce,La)2(CO3)3F2 R 3 3 |
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V/C.07-80 Parisite-(Nd) Ca(Nd,Ce,La)2(CO3)3F2 R 3 3 |
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V/C.07-90 Rontgenite-(Ce) Ca2(Ce,La)3(CO3)5F3 R 3 3 |
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V/C.07-100 Synchysite-(Y) CaY(CO3)2F C 2/c 2/m |
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V/C.07-110 Synchysite-(Ce) CaCe(CO3)2F C 2/c 2/m |
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V/C.07-120 Synchysite-(Nd) CaNd(CO3)2F Unk Ortho |
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V/C.07-130 Huanghoite-(Ce) BaCe(CO3)2F R 3m 3 2/m |
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V/C.07-140 Cebaite-(Ce) Ba3Ce2(CO3)5F2 C 2/m or C 2 Mono |
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V/C.07-150 Cebaite-(Nd)! Ba3(Nd,Ce)2(CO3)5F2 Unk Mono |
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V/C.07-154 Kukharenkoite-(La)! Ba2(La,Ce)(CO3)3F P 21/m 2/m |
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V/C.07-155 Kukharenkoite-(Ce)! Ba2Ce(CO3)3F P 21/m 2/m |
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V/C.07-160 Zhonghuacerite-(Ce) Ba2Ce(CO3)3F P 21/m 2/m |
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V/C.07-170 Cordylite-(Ce) Ba(Ce,La)2(CO3)3F2 P 63/mmc 6/m 2/m 2/m |
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V/C.07-175 Lukechangite-(Ce)! Na3Ce2(CO3)4F P 63/mmc 6/m 2/m 2/m |
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V/C.07-190 Mineevite-(Y) Na25Ba(Y,Gd,Dy)2(HCO3)4(CO3)11(SO4)2ClF2 P 63/m 6/m |
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V/C.07-200 Reederite-(Y)! Na15Y2(CO3)9(SO3F)Cl P 6 6 |
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V/C.07-210 Micheelsenite! (Ca,Y)3Al[PO3OH,CO3](CO3)(OH)6·12(H2O) P 63 6 |
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Other Kozoite-(La) Information
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References: |
NAME( AmMin, 89:894) PHYS. PROP.(AmMin, 89:894) OPTIC PROP.(AmMin, 89:894) |
See Also: |
Links to other databases for Kozoite-(La) :
1 -Am. Min. Crystal Structure Database
2 -Athena
3 -Google Images
4 -Google Scholar
5 -MinDAT
6 -MinMax(Deutsch)
7 -MinMax(English)
8 -Mineralienatlas (Deutsch)
9 -QUT Mineral Atlas
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Print or Cut-and-Paste your Kozoite-(La) Specimen Label here :
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Kozoite-(La)
La(CO3)(OH)
Dana No: 16b.1.1.7 Strunz No: V/C.07-62
Locality:
Notes:
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