Kozoite-(Nd) Mineral Data

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General Kozoite-(Nd) Information

Chemical Formula:

(Nd,La,Sm,Pr)(CO3)(OH)

Composition:

Molecular Weight = 205.20 gm

Lanthanum 20.31 % La 23.82 % La₂O₃

Praeseodymium 6.87 % Pr 8.04 % Pr₂O₃

Samarium 3.66 % Sm 4.25 % Sm₂O₃

Hydrogen 0.49 % H 4.39 % H₂O

Carbon 5.85 % C 21.45 % CO₂

Neodymium 31.63 % Nd 36.89 % Nd₂O₃

Oxygen 31.19 % O

______ ______

100.00 % 98.83 % = TOTAL OXIDE

Empirical Formula:

Nd_0.45La_0.3Pr_0.1Sm_0.05(CO₃)(OH)

Environment:

Post magmatic hydrothermal activity in an alkali olivine basalt from the last-stage lava of a volcanic sequence. Probable dehydration product of lanthanite-(Nd). End-member of the a ncylite group.

IMA Status:

Approved IMA 1999 (Dana # Added)

Locality:

Niikoba, Hizen-cho, Higashi Matsuura-gun, Saga Prefecture, Japan. Link to MinDat.org Location Data.

Name Origin:

Named for Kozo Hanashima (1925-1985), a chemist, and pioneer in the study of chemistry of rare earth minerals in Japan.

Synonym:

IMA1998-063

Kozoite-(Nd) Image

Images:

Kozoite-(Nd)

Comments: White grain of kozoite-(Nd) in matrix.
Location: Niikoba, Hizen-cho, Higashi-Matsuura-gun, Saga Prefecture, Kyushu Island, Japan. Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag

Images:

Kozoite-(Nd)

Comments: Photomicrograph of the spherical aggregate composed of kosoite-(Nd). (JMPS, v 98, p 138).
Location: Cavity in alkaline basalt near Mitsukoshi, Saga Prefecture, Japan. Scale: See Image.
© JMPS

Images:

Kozoite-(Nd) Kozoite-(La)

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

Kozoite-(Nd) Crystallography

Axial Ratios:

a:b:c =0.5843:1:0.8515

Cell Dimensions:

a = 4.981, b = 8.524, c = 7.259, Z = 4; V = 308.20 Den(Calc)= 4.42

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pmcn

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 4.29(1)(110), 2.93(0.89)(102), 2.06(0.78)(221),1.892(0.78), 2.333(0.78)(131), 1.994(0.75)(212), 3.69(0.72)(111), 4.3(0.72), 5.52(0.7),

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Crystal Structure:

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Miyawaki R , Matsubara S , Yokoyama K , Takeuchi K , Nakai I , Terada Y , American Mineralogist , 85 (2000) p.1076-1081, Kozoite-(Nd), Nd(CO3)(OH), a new mineral in an alkali olivine basalt, from Hizen-cho, Saga Prefecture, Japan

Physical Properties of Kozoite-(Nd)

Color:

Pale pinkish purple, White.

Diaphaneity:

Transparent

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Luster:

Vitreous - Dull

Optical Properties of Kozoite-(Nd)

Gladstone-Dale:

CI calc= -0.027 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1672,KC= 0.1628
Ncalc = 1.72

Optical Data:

Biaxial (?), a=1.698, g=1.78, bire=0.0820

Calculated Properties of Kozoite-(Nd)

Electron Density:

Bulk Density (Electron Density)=3.97 gm/cc
note: Specific Gravity of Kozoite-(Nd) =4.42 gm/cc.

Fermion Index:

Fermion Index = 0.07
Boson Index = 0.93

Photoelectric:

PE_Kozoite-(Nd)= 343.91 barns/electron
U=PE_Kozoite-(Nd) x r_electron=1,364.49 barns/cc.

Radioactivity:

GRapi = 60,011.32 (Gamma Ray American Petroleum Institute Units)
Concentration of Kozoite-(Nd) per GRapi unit = 16.66 (PPM)

Kozoite-(Nd) 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) 506.85 ±126.71 grams of pure Kozoite-(Nd) .

**Estimated Radioactivity from Kozoite-(Nd)** - 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 / 7.56 cm	1,403,947	3.79E-05	60,011.32	19.73
100 gm / 3.51 cm	140,395	3.79E-06	6,001.13	1.97
10 gm / 1.63 cm	14,039	3.79E-07	600.11	0.20
1 gm / 7.56 mm	1,404	3.79E-08	60.01	0.02
0.1 gm / 3.51 mm	140	3.79E-09	6.00	0.00
0.01 gm / 1.63 mm	14	3.79E-10	0.60	0.00
0.001 gm / 0.76 mm	1	3.79E-11	0.06	0.00

Weight of pure Kozoite-(Nd) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.42 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 ( 3.12 % Th) From Sum REE Elements (62.47 % REE)

Kozoite-(Nd) Classification

Dana Class:

16b.01.01.06 (16b)Carbonates - Hydroxyl or Halogen

(16b.01)where (A)m (B)n (XO3)p Zq, with (m+n):p=1:1

(16b.01.01)Ancylite group

16b.01.01.01 Ancylite-(Ce) SrCe(CO3)2(OH)•(H2O) Pmcn 2/m 2/m 2/m

16b.01.01.02 Calcioancylite-(Ce) CaCe(CO3)2(OH)•(H2O) P mmm 2/m 2/m 2/m

16b.01.01.03 Calcioancylite-(Nd) CaNd(CO3)2(OH)•(H2O) Pm m

16b.01.01.04 Gysinite-(Nd) Pb(Nd,La)(CO3)2(OH)•(H2O) Pmcn 2/m 2/m 2/m

16b.01.01.05 Ancylite-(La)! Sr(La,Ce)(CO3)2(OH)•(H2O) Pmcn 2/m 2/m 2/m

16b.01.01.06 Kozoite-(Nd)! (Nd,La,Sm,Pr)(CO3)(OH) Pmcn 2/m 2/m 2/m

16b.01.01.07 Kozoite-(La)! La(CO3)(OH) Pmcn 2/m 2/m 2/m

Strunz Class:

05.DC.05 05 - CARBONATES (NITRATES)

05.D - Carbonates with Additional Anions, with H2O

05.DC -With large cations

05.DC.05 Ancylite-(Ce) SrCe(CO3)2(OH)•(H2O) Pmcn 2/m 2/m 2/m

05.DC.05 Ancylite-(La)! Sr(La,Ce)(CO3)2(OH)•(H2O) Pmcn 2/m 2/m 2/m

05.DC.05 Gysinite-(Nd) Pb(Nd,La)(CO3)2(OH)•(H2O) Pmcn 2/m 2/m 2/m

05.DC.05 Calcioancylite-(Ce) CaCe(CO3)2(OH)•(H2O) P mmm 2/m 2/m 2/m

05.DC.05 Calcioancylite-(Nd) CaNd(CO3)2(OH)•(H2O) Pm m

05.DC.05 Kozoite-(La)! La(CO3)(OH) Pmcn 2/m 2/m 2/m

05.DC.05 Kozoite-(Nd)! (Nd,La,Sm,Pr)(CO3)(OH) Pmcn 2/m 2/m 2/m

Other Kozoite-(Nd) Information

References:

NAME( AmMin, Vol 85, p 1076) PHYS. PROP.(AmMin, Vol 85, p 1076) OPTIC PROP.(AmMin, Vol 85, p 1076)

See Also:

Links to other databases for Kozoite-(Nd) :
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
10 - Ruff.Info

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Kozoite-(Nd)

(Nd,La,Sm,Pr)(CO3)(OH)
Dana No: 16b.01.01.06 Strunz No: 05.DC.05
Locality:

Notes: