Gysinite-(Nd) Mineral Data

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General Gysinite-(Nd) Information

Chemical Formula:

Pb(Nd,La)(CO3)2(OH)•(H2O)

Composition:

Molecular Weight = 505.15 gm

Lanthanum 6.87 % La 8.06 % La₂O₃

Hydrogen 0.60 % H 5.35 % H₂O

Lead 41.02 % Pb 44.19 % PbO

Carbon 4.76 % C 17.42 % CO₂

Neodymium 21.42 % Nd 24.98 % Nd₂O₃

Oxygen 25.34 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

PbNd_0.75La_0.25(CO₃)₂(OH)•(H₂O)

Environment:

Secondary mineral in the oxidized portions of rare-earth-bearing lead deposits.

IMA Status:

Approved IMA 1985

Locality:

Originally found on a museum specimen labelled as coming from Shinkolobwe; however the associated minerals indicate the specimen is more likely from the Kasompi mine, both in Katanga P Link to MinDat.org Location Data.

Name Origin:

Named for Marcel Gysin (1891-1974), Professor of Mineralogy, University of Geneva, Geneva, Switzerland.

Name Pronunciation:

Gysinite-(Nd)

Synonym:

ICSD 30968

PDF 45-1402

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Gysinite-(Nd) Crystallography

Axial Ratios:

a:b:c =0.5929:1:0.8529

Cell Dimensions:

a = 5.04, b = 8.5, c = 7.25, Z = 2; V = 310.59 Den(Calc)= 5.40

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): 3.676(1), 4.326(1), 2.074(0.6),

Crystal Structure:

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Feng W J , Zhou G P , Liu Z B , Xu Y , Acta Crystallographica, Section E , 63 (2007) p.i174-i174, Nd(CO3)(OH) from single-crystal data

Physical Properties of Gysinite-(Nd)

Cleavage:

None

Color:

Light pink, Red pink.

Density:

4.82

Diaphaneity:

Transparent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Hardness:

4-4.5 - Between Fluorite and Apatite

Luster:

Vitreous - Greasy

Streak:

light pink

Optical Properties of Gysinite-(Nd)

Gladstone-Dale:

CI meas= -0.034 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.077 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1475,KPDmeas= 0.1653,KC= 0.1599
Ncalc = 1.77 - 1.86

Optical Data:

Biaxial (-), a=1.745, b=1.805, g=1.84, bire=0.0950, 2V(Calc)=72, 2V(Meas)=70.

Calculated Properties of Gysinite-(Nd)

Electron Density:

Bulk Density (Electron Density)=4.20 gm/cc
note: Specific Gravity of Gysinite-(Nd) =4.82 gm/cc.

Fermion Index:

Fermion Index = 0.13
Boson Index = 0.87

Photoelectric:

PE_{Gysinite-(Nd)}= 884.77 barns/electron
U=PE_{Gysinite-(Nd)} x r_electron=3,718.83 barns/cc.

Radioactivity:

GRapi = 26,314.20 (Gamma Ray American Petroleum Institute Units)
Concentration of Gysinite-(Nd) per GRapi unit = 38.00 (PPM)

Gysinite-(Nd) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

**Estimated Radioactivity from Gysinite-(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 / 7.34 cm	633,697	1.71E-05	26,314.20	8.65
100 gm / 3.41 cm	63,370	1.71E-06	2,631.42	0.87
10 gm / 1.58 cm	6,337	1.71E-07	263.14	0.09
1 gm / 7.34 mm	634	1.71E-08	26.31	0.01
0.1 gm / 3.41 mm	63	1.71E-09	2.63	0.00
0.01 gm / 1.58 mm	6	1.71E-10	0.26	0.00
0.001 gm / 0.73 mm	1	1.71E-11	0.03	0.00

Weight of pure Gysinite-(Nd) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.82 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 ( 1.41 % Th) From Sum REE Elements (28.29 % REE)

Gysinite-(Nd) Classification

Dana Class:

16b.01.01.04 (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 Gysinite-(Nd) Information

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Gysinite-(Nd) :
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
12 - Ruff.Info
13 - WWW-MINCRYST

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Gysinite-(Nd)

Pb(Nd,La)(CO3)2(OH)•(H2O)
Dana No: 16b.01.01.04 Strunz No: 05.DC.05
Locality:

Notes: