Calcioancylite-(Ce) Mineral Data

[Content and History] [Recent Issues] [Back Issues] [Subscriptions] [Contacts]
See Also: [Diamond Crystals] [Excalibur Minerals] [Hudson Institute] [Minerals on CDROM]
Mineral News was founded some twenty years ago and has developed a following of
avid mineral collectors seeking timely information about new finds and other items
of interest to the collector community. Articles are solicited from collector and scientific authors.

General Calcioancylite-(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.

Name Pronunciation:

Calcioancylite-(Ce) + Pronunciation

Synonym:

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

Calcioancylite-(Ce) Image

Images:

Calcioancylite-(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., Québec, Canada. Scale: 5x4x4 cm.
© John Betts - Fine Minerals

Calcioancylite-(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),

Physical Properties of Calcioancylite-(Ce)

Color:

Colorless, Gray, Pale yellow.

Diaphaneity:

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 Calcioancylite-(Ce)

Gladstone-Dale:

CI calc= -0.058 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1994,KC= 0.1884
Ncalc = 1.68

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 Calcioancylite-(Ce)

Electron Density:

Bulk Density (Electron Density)=3.38 gm/cc
note: Specific Gravity of Calcioancylite-(Ce) =3.61 gm/cc.

Fermion Index:

Fermion Index = 0.0011342482
Boson Index = 0.9988657518

Photoelectric:

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

Radioactivity:

GRapi = 41,758.67 (Gamma Ray American Petroleum Institute Units)
Concentration of Calcioancylite-(Ce) per GRapi unit = 23.95 (PPM)

Calcioancylite-(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 Calcioancylite-(Ce) .

**Estimated Radioactivity from Calcioancylite-(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 Calcioancylite-(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)

Calcioancylite-(Ce) Classification

Dana Class:

16b.01.01.02 (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-(Ce) Information

References:

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

See Also:

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

Search for Calcioancylite-(Ce) using:

[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Calcioancylite-(Ce) :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Calcioancylite-(Ce) Mineral Data :

Ask about Calcioancylite-(Ce) here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Calcioancylite-(Ce) Specimen Label here :

Calcioancylite-(Ce)

CaCe(CO3)2(OH)•(H2O)
Dana No: 16b.01.01.02 Strunz No: 05.DC.05
Locality:

Notes: