Calcio-ancylite-(Ce) Mineral Data

Calcio-ancylite-(Ce) Mineral Data

General Calcio-ancylite-(Ce) Information

Chemical Formula:

CaCe(CO3)2(OH)·(H2O)

Composition:

Molecular Weight = 335.23 gm

Calcium 11.96 % Ca 16.73 % CaO

Cerium 41.80 % Ce 48.96 % Ce₂O₃

Hydrogen 0.90 % H 8.06 % H₂O

Carbon 7.17 % C 26.26 % CO₂

Oxygen 38.18 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CaCe(CO₃)₂(OH)·(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1922

Locality:

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.

Calcio-ancylite-(Ce) Image

Images:

Calcio-ancylite-(Ce)

Comments: Gray calcio-ancylite pseudomorphs after remondite crystals up to 4 cm long.
Location: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mt Saint-Hilaire, Rouville Co., Qu?bec, Canada. Scale: 5x4x4 cm.
© John Betts - Fine Minerals

Calcio-ancylite-(Ce) Crystallography

Axial Ratios:

a:b:c =0.8527:1:0.5912

Cell Dimensions:

a = 7.24, b = 8.49, c = 5.02, Z = 2; V = 308.57 Den(Calc)= 3.61

Crystal System:

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

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

By Intensity(I/I_o): 2.02(1), 2.09(1), 2.35(1),1.95(0.9), 1.85(0.6), 2.53(0.5), 2.65(0.5), 2.95(0.5),

Forms:

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Forms: [ 1 1 1] [ 1 2 0]

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Physical Properties of Calcio-ancylite-(Ce)

Color:

Colorless, Gray, Pale yellow.

Diaphaniety:

Transparent to Subtranslucent

Habit:

Pseudo Octohedral - Crystals show an octohedral outline.

Hardness:

4-4.5 - Between Fluorite and Apatite

Luminescence:

Fluorescent, Short UV=blue gray, Long UV=blue gray.

Luster:

Vitreous - Greasy

Optical Properties of Calcio-ancylite-(Ce)

Gladstone-Dale:

CI calc= -0.058 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1994,KC= 0.1884

Optical Data:

Biaxial (-), a=1.654, b=1.733, g=1.772, bire=0.1180, 2V(Calc)=66, 2V(Meas)=60-70. Dispersion r < v.

Calculated Properties of Calcio-ancylite-(Ce)

Electron Density:

r_electron=3.38 gm/cc
note: r_{Calcio-ancylite-(Ce)}=3.61 gm/cc.

Fermion Index

Fermion Index = 0.00113
Boson Index = 0.99887

Photoelectric:

PE_{Calcio-ancylite-(Ce)}= 207.70 barns/electron
U=PE_{Calcio-ancylite-(Ce)} x r_electron= 702.32 barns/cc.

Radioactivity:

GRapi = 41,758.67 (Gamma Ray American Petroleum Institute Units)

Calcio-ancylite-(Ce) 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) 728.39 ±182.10 grams of pure Calcio-ancylite-(Ce) .

**Estimated Radioactivity from Calcio-ancylite-(Ce)** - 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 / 8.09 cm	936,234	2.53E-05	41,758.67	13.73
100 gm / 3.75 cm	93,623	2.53E-06	4,175.87	1.37
10 gm / 1.74 cm	9,362	2.53E-07	417.59	0.14
1 gm / 8.09 mm	936	2.53E-08	41.76	0.01
0.1 gm / 3.75 mm	94	2.53E-09	4.18	0.00
0.01 gm / 1.74 mm	9	2.53E-10	0.42	0.00
0.001 gm / 0.81 mm	1	2.53E-11	0.04	0.00

Weight of pure Calcio-ancylite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.61 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 ( 2.09 % Th) From Sum REE Elements (41.80 % REE)

Calcio-ancylite-(Ce) Classification

Dana Class:

16b.1.1.2 (16b)Carbonates - Hydroxyl or Halogen

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

(16b.1.1)Ancylite group

16b.1.1.1 Ancylite-(Ce) SrCe(CO3)2(OH)·(H2O) Pmcn 2/m 2/m 2/m

16b.1.1.2 Calcio-ancylite-(Ce) CaCe(CO3)2(OH)·(H2O) P mmm 2/m 2/m 2/m

16b.1.1.3 Calcio-ancylite-(Nd) CaNd(CO3)2(OH)·(H2O) Pm m

16b.1.1.4 Gysinite-(Nd) Pb(Nd,La)(CO3)2(OH)·(H2O) Pmcn 2/m 2/m 2/m

16b.1.1.5 Ancylite-(La)! Sr(La,Ce)(CO3)2(OH)·(H2O) Pmcn 2/m 2/m 2/m

16b.1.1.6 Kozoite-(Nd)! (Nd,La,Sm,Pr)(CO3)(OH) Pmcn 2/m 2/m 2/m

16b.1.1.7 Kozoite-(La)! La(CO3)(OH) Pmcn 2/m 2/m 2/m

Strunz Class:

V/E.08-20 V - Nitrates, Carbonates and Borates

V/E - Water-bearing carbonates with unfamiliar anions

V/E.08 - Strontiodresserite - Dundasite series

V/E.08-05 Thomasclarkite-(Y)! (Na,Ce)(Y,REE)(HCO3)(OH)3·4(H2O) P 2 2

V/E.08-10 Kamphaugite-(Y) Ca(Y,REE)(CO3)2(OH)2·3(H2O) P 4₁2₁2 4 2 2

V/E.08-20 Calcio-ancylite-(Ce) CaCe(CO3)2(OH)·(H2O) P mmm 2/m 2/m 2/m

V/E.08-25 Calcio-ancylite-(Nd) CaNd(CO3)2(OH)·(H2O) Pm m

V/E.08-28 Ancylite-(La)! Sr(La,Ce)(CO3)2(OH)·(H2O) Pmcn 2/m 2/m 2/m

V/E.08-30 Ancylite-(Ce) SrCe(CO3)2(OH)·(H2O) Pmcn 2/m 2/m 2/m

V/E.08-40 Gysinite-(Nd) Pb(Nd,La)(CO3)2(OH)·(H2O) Pmcn 2/m 2/m 2/m

V/E.08-50 Strontiodresserite (Sr,Ca)Al2(CO3)2(OH)4·(H2O) Pbmm 2/m 2/m 2/m

V/E.08-60 Dresserite BaAl2(CO3)2(OH)4·(H2O) Pbmm 2/m 2/m 2/m

V/E.08-70 Hydrodresserite BaAl2(CO3)2(OH)4·3(H2O) P1 1

V/E.08-80 Montroyalite Sr4Al8(CO3)3(OH,F)26·10-11(H2O) Unk. Tri

V/E.08-90 Dundasite PbAl2(CO3)2(OH)4·(H2O) Pbmm 2/m 2/m 2/m

V/E.08-95 Petterdite! PbCr2(CO3)2(OH)4·H2O Pbnm 2/m 2/m 2/m

V/E.08-100 Barstowite Pb4(CO3)Cl6·(H2O) P 2₁/m 2/m

Other Calcio-ancylite-(Ce) Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Calcio-ancylite-(Ce) :
1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 -Am. Min. Crystal Structure Database 4 -Athena 5 - EUROmin Project 6 -Google Images 7 -Google Scholar 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas

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Calcio-ancylite-(Ce)

CaCe(CO3)2(OH)·(H2O)
Dana No: 16b.1.1.2 Strunz No: V/E.08-20
Locality:

Notes: