Schuilingite-(Nd) Mineral Data

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General Schuilingite-(Nd) Information

Chemical Formula:

PbCu(Nd,Gd,Sm,Y)(CO3)3(OH)•1.5(H2O)

Composition:

Molecular Weight = 696.16 gm

Samarium 4.32 % Sm 5.01 % Sm₂O₃

Gadolinium 6.78 % Gd 7.81 % Gd₂O₃

Yttrium 2.55 % Y 3.24 % Y₂O₃

Copper 9.13 % Cu 10.28 % Cu₂O

Hydrogen 1.59 % H 14.23 % H₂O

Lead 29.76 % Pb 32.06 % PbO

Carbon 5.18 % C 18.97 % CO₂

Neodymium 6.22 % Nd 7.25 % Nd₂O₃

Oxygen 34.47 % O

______ ______

100.00 % 98.85 % = TOTAL OXIDE

Empirical Formula:

PbCuNd_0.3Gd_0.3Sm_0.2Y_0.2(CO₃)₃(OH)•5(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1947

Locality:

Kasompi copper deposit, between Likasi and Kolwezi, Shaba, Democratic Republic of Congo. Link to MinDat.org Location Data.

Name Origin:

Named after Hendrik Jan Schuiling (1892-1966), Dutch engineer and Chief Geologist, Union Miniere du Haut-Katanga, former Belgian Congo.

Name Pronunciation:

Schuilingite-(Nd) + Pronunciation

Schuilingite-(Nd) Image

Images:

Schuilingite-(Nd)

Comments: Blue crystals of Schuilingite-(Nd).
Location: Kasompi Mine, Kambove, Shaba (Katanga), Congo (Zaïre). Scale: Picture size 1.8 mm.
© Thomas Witzke / Abraxas-Verlag

Schuilingite-(Nd) Crystallography

Axial Ratios:

a:b:c =0.3931:1:0.3383

Cell Dimensions:

a = 7.418, b = 18.87, c = 6.385, Z = 4; V = 893.76 Den(Calc)= 5.17

Crystal System:

Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: P 2₁cn

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

By Intensity(I/I_o): 3.827(1), 3.162(0.9), 4.46(0.9),

Crystal Structure:

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Schindler M , Hawthorne F C , The Canadian Mineralogist , 37 (1999) p.1463-1470, The crystal structure of schuilingite-(Nd)

Physical Properties of Schuilingite-(Nd)

Cleavage:

{110} Perfect

Color:

Azure, Turquoise.

Density:

5.2

Diaphaneity:

Transparent

Hardness:

3-4 - Calcite-Fluorite

Luster:

Adamantine

Streak:

light blue

Optical Properties of Schuilingite-(Nd)

Gladstone-Dale:

CI meas= 0.231 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.226 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1444,KPDmeas= 0.1436,KC= 0.1867
Ncalc = 1.97

Optical Data:

Biaxial (-), a=1.71, b=1.755, g=1.775, bire=0.0650, 2V(Calc)=64, 2V(Meas)=66.

Calculated Properties of Schuilingite-(Nd)

Electron Density:

Bulk Density (Electron Density)=4.71 gm/cc
note: Specific Gravity of Schuilingite-(Nd) =5.17 gm/cc.

Fermion Index:

Fermion Index = 0.13
Boson Index = 0.87

Photoelectric:

PE_{Schuilingite-(Nd)}= 620.19 barns/electron
U=PE_{Schuilingite-(Nd)} x r_electron=2,923.80 barns/cc.

Radioactivity:

GRapi = 17,076.84 (Gamma Ray American Petroleum Institute Units)
Concentration of Schuilingite-(Nd) per GRapi unit = 58.56 (PPM)

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

**Estimated Radioactivity from Schuilingite-(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 / 7.18 cm	393,276	1.06E-05	17,076.84	5.61
100 gm / 3.33 cm	39,328	1.06E-06	1,707.68	0.56
10 gm / 1.55 cm	3,933	1.06E-07	170.77	0.06
1 gm / 7.18 mm	393	1.06E-08	17.08	0.01
0.1 gm / 3.33 mm	39	1.06E-09	1.71	0.00
0.01 gm / 1.55 mm	4	1.06E-10	0.17	0.00
0.001 gm / 0.72 mm	0	1.06E-11	0.02	0.00

Weight of pure Schuilingite-(Nd) in grams (gm) and Calculated Diameter of a Sphere with a Density of 5.17 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 ( 0.87 % Th) From Sum REE Elements (17.31 % REE)

Schuilingite-(Nd) Classification

Dana Class:

16b.01.04.01 (16b)Carbonates - Hydroxyl or Halogen

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

(16b.01.04)Dana Group

16b.01.04.01 Schuilingite-(Nd) PbCu(Nd,Gd,Sm,Y)(CO3)3(OH)•1.5(H2O) P 2₁cn mm2

Strunz Class:

05.DB.20 05 - CARBONATES (NITRATES)

05.D - Carbonates with Additional Anions, with H2O

05.DB -With large and medium-sized cations

05.DB.20 Schuilingite-(Nd) PbCu(Nd,Gd,Sm,Y)(CO3)3(OH)•1.5(H2O) P 2₁cn mm2

Other Schuilingite-(Nd) Information

References:

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

See Also:

Links to other databases for Schuilingite-(Nd) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info

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Schuilingite-(Nd)

PbCu(Nd,Gd,Sm,Y)(CO3)3(OH)•1.5(H2O)
Dana No: 16b.01.04.01 Strunz No: 05.DB.20
Locality:

Notes: