Ancylite-(La) Mineral Data + Say ANCYLITE-(LA)


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General Ancylite-(La) Information

Help on Chemical  Formula: Chemical Formula: Sr(La,Ce)(CO3)2(OH)·(H2O)
Help on Composition: Composition: Molecular Weight = 381.87 gm
   Strontium  22.95 %  Sr   27.13 % SrO
   Lanthanum  27.28 %  La   31.99 % La2O3
   Cerium      9.17 %  Ce   10.74 % Ce2O3
   Hydrogen    0.79 %  H     7.08 % H2O
   Carbon      6.29 %  C    23.05 % CO2
   Oxygen     33.52 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: SrLa0.75Ce0.25(CO3)2(OH)·(H2O)
Help on Environment: Environment: In hydrothermal veins in nepheline syenites.
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Marchenko Peak, Mount Kukisvumchorr, Khibina massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the composition and from the Greek "curved," in allusion to the rounded and distorted character of the crystals.
Help on Synonym: Synonym: IMA1995-053
 

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Ancylite-(La) Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5905:1:0.8471
Help on Cell Dimensions: Cell Dimensions: a = 5.072, b = 8.589, c = 7.276, Z = 2; V = 316.97 Den(Calc)= 4.00
Help on Crystal System: 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/Io): 2.955(1), 4.36(0.92), 3.705(0.9),
Click Here for Large Ancylite-(La) Structure Window Crystal Structure:

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Petersen O V , Niedermayr G , Gault R A , Brandstatter F , Micheelsen H I , Giester G , Neues Jahrbuch fur Mineralogie, Monatshefte , 2001 (2001) p.493-504, Ancylite-(La) from the Ilimaussaq alkaline complex, South Greenland, Locality: Ilimaussaq alkaline complex, South Greenland

 

Physical Properties of Ancylite-(La)

Help on Cleavage: Cleavage: None
Help on Color: Color: Yellow, Yellowish brown.
Help on Density: Density: 3.88
Help on Diaphaniety: Diaphaniety: Translucent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Crystalline - Fine - Occurs as well-formed fine sized crystals.
Help on Habit: Habit: Pyramidal - Crystals are shaped like pyramids.
Help on Hardness: Hardness: 4-4.5 - Between Fluorite and Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Ancylite-(La)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.002 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.028 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1699,KPDmeas= 0.1752,KC= 0.1749
Help on Optical Data: Optical Data: Biaxial (+), a=1.64, b=1.668, g=1.731, bire=0.0910, 2V(Calc)=70, 2V(Meas)=70. Dispersion r < v moderate.
 

Calculated Properties of Ancylite-(La)

Help on Electron Density: Electron Density:

relectron=3.54 gm/cc
note: rAncylite-(La) =3.88 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.01716
Boson Index = 0.98284
Help on Photoelectric: Photoelectric:

PEAncylite-(La) = 201.59 barns/electron
U=PEAncylite-(La) x relectron= 713.81 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 35,486.75 (Gamma Ray American Petroleum Institute Units)

Ancylite-(La) 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) 857.13 ±214.28 grams of pure Ancylite-(La) .

Estimated Radioactivity from Ancylite-(La) - 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 / 7.90 cm 816,577 2.21E-05 35,486.75 11.67
100 gm / 3.66 cm 81,658 2.21E-06 3,548.67 1.17
10 gm / 1.70 cm 8,166 2.21E-07 354.87 0.12
1 gm / 7.90 mm 817 2.21E-08 35.49 0.01
0.1 gm / 3.66 mm 82 2.21E-09 3.55 0.00
0.01 gm / 1.70 mm 8 2.21E-10 0.35 0.00
0.001 gm / 0.79 mm 1 2.21E-11 0.04 0.00

Weight of pure Ancylite-(La) in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.88 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 ( 1.82 % Th) From Sum REE Elements (36.45 % REE)
 

Ancylite-(La) Classification

Help on  Dana Class: Dana Class: 16b.1.1.5 (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
Help on  Strunz Class: Strunz Class: V/E.08-28 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 Ancylite-(La) Information

Help on References: References: NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.83,p652,1998) OPTIC PROP.(MinRec)
Help on See Also: See Also: Links to other databases for Ancylite-(La) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Google Images
4 - Google Scholar
5 - MinDAT
6 - MinMax(Deutsch)
7 - MinMax(English)
8 - Mineralienatlas (Deutsch)
9 - QUT Mineral Atlas
10 - Ruff.Info
11 - Uranium Minerals
12 - WWW-MINCRYST

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Print or Cut-and-Paste your Ancylite-(La) Specimen Label here :

Ancylite-(La)

Sr(La,Ce)(CO3)2(OH)·(H2O)
Dana No: 16b.1.1.5 Strunz No: V/E.08-28
Locality:

 

Notes:

 

 
   
 
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