Calcioancylite-(Nd) Mineral Data

General Calcioancylite-(Nd) Information

Chemical Formula:

CaNd(CO3)2(OH)•(H2O)

Composition:

Molecular Weight = 339.36 gm

Calcium 11.81 % Ca 16.52 % CaO

Hydrogen 0.89 % H 7.96 % H₂O

Carbon 7.08 % C 25.94 % CO₂

Neodymium 42.50 % Nd 49.58 % Nd₂O₃

Oxygen 37.72 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CaNd(CO₃)₂(OH)•(H₂O)

Environment:

Miarolitic cavity in granite.

IMA Status:

Approved IMA 1991

Locality:

Baveno, Piedmont, Italy. Link to MinDat.org Location Data.

Name Origin:

Named for the composition and from the Greek "curved," in allusion to the rounded and distorted character of the crystals.

Name Pronunciation:

Calcioancylite-(Nd) + Pronunciation

Synonym:

Calcio-ancylite-(Nd) - Renamed Calcioancylite-(Nd) by Mineralogical Record, v39 (2008), p131

IMA1989-008

Calcioancylite-(Nd) Crystallography

Axial Ratios:

a:b:c =1.4493:1:1.7017

Cell Dimensions:

a = 7.212, b = 4.976, c = 8.468, Z = 2; beta = 90.04° V = 303.89 Den(Calc)= 3.71

Crystal System:

Monoclinic - Domatic H-M Symbol (m) Space Group: Pm

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

By Intensity(I/I_o): 4.26(1), 2.905(0.9), 2.048(0.8),

Physical Properties of Calcioancylite-(Nd)

Color:

Pink.

Diaphaneity:

Transparent

Hardness:

4-4.5 - Between Fluorite and Apatite

Luster:

Vitreous (Glassy)

Optical Properties of Calcioancylite-(Nd)

Gladstone-Dale:

CI calc= -0.046 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1928,KC= 0.1844
Ncalc = 1.68

Optical Data:

Biaxial (-), a=1.66, b=1.725, g=1.761, bire=0.1010, 2V(Calc)=70, 2V(Meas)=70-74.

Calculated Properties of Calcioancylite-(Nd)

Electron Density:

Bulk Density (Electron Density)=3.48 gm/cc
note: Specific Gravity of Calcioancylite-(Nd) =3.71 gm/cc.

Fermion Index:

Fermion Index = 0.08
Boson Index = 0.92

Photoelectric:

PE_{Calcioancylite-(Nd)}= 239.41 barns/electron
U=PE_{Calcioancylite-(Nd)} x r_electron= 832.32 barns/cc.

Radioactivity:

GRapi = 42,483.74 (Gamma Ray American Petroleum Institute Units)
Concentration of Calcioancylite-(Nd) per GRapi unit = 23.54 (PPM)

Calcioancylite-(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) 715.96 ±178.99 grams of pure Calcioancylite-(Nd) .

**Estimated Radioactivity from Calcioancylite-(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 / 8.01 cm	952,082	2.57E-05	42,483.74	13.97
100 gm / 3.72 cm	95,208	2.57E-06	4,248.37	1.40
10 gm / 1.73 cm	9,521	2.57E-07	424.84	0.14
1 gm / 8.01 mm	952	2.57E-08	42.48	0.01
0.1 gm / 3.72 mm	95	2.57E-09	4.25	0.00
0.01 gm / 1.73 mm	10	2.57E-10	0.42	0.00
0.001 gm / 0.80 mm	1	2.57E-11	0.04	0.00

Weight of pure Calcioancylite-(Nd) in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.71 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 ( 2.13 % Th) From Sum REE Elements (42.50 % REE)

Calcioancylite-(Nd) Classification

Dana Class:

16b.01.01.03 (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 Calcioancylite-(Nd) Information

References:

NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.76,p1729,1991) OPTIC PROP.(Am.Min.,Vol.76,p1729,1991)

See Also:

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

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Calcioancylite-(Nd)

CaNd(CO3)2(OH)•(H2O)
Dana No: 16b.01.01.03 Strunz No: 05.DC.05
Locality:

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