Vastmanlandite-(Ce) Mineral Data

Vastmanlandite-(Ce) Mineral Data

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General Vastmanlandite-(Ce) Information

Chemical Formula:

Ce3CaMg2Al2Si5O19(OH)2F

Composition:

Molecular Weight = 1,060.43 gm

Calcium 3.78 % Ca 5.29 % CaO

Cerium 39.64 % Ce 46.43 % Ce₂O₃

Magnesium 4.58 % Mg 7.60 % MgO

Aluminum 5.09 % Al 9.62 % Al₂O₃

Silicon 13.24 % Si 28.33 % SiO₂

Hydrogen 0.19 % H 1.70 % H₂O

Oxygen 31.68 % O

Fluorine 1.79 % F 1.79 % F

- % F -0.75 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ce₃CaMg₂Al₂Si₅O₁₉(OH)₂F

Environment:

Related to epidote group; structure determined.

IMA Status:

Proposed IMA 2002 (Dana # Added)

Locality:

Link to MinDat.org Location Data.

Name Origin:

Commission on New Minerals and Mineral Names (CNMMN)

Synonym:

IMA2002-025

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Vastmanlandite-(Ce) Crystallography

Axial Ratios:

a:b:c =1.5665:1:2.7786

Cell Dimensions:

a = 8.939, b = 5.706, c = 15.855, Z = 1.5; beta = 94.58° V = 806.12 Den(Calc)= 3.28

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/m

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

By Intensity(I/I_o): 2.979(1), 3.5(0.2), 2.622(0.19),2.185(0.15), 2.682(0.13), 4.64(0.1), 2.847(0.1),

Crystal Structure:

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Holtstam D , Kolitsch U , Andersson U B , European Journal of Mineralogy , 17 (2005) p.129-141, Vastmanlandite-(Ce) - a new lanthanide- and F-bearing sorosilicate mineral, from Vastmanland, Sweden: description, crystal structure, and relation to gatelite-(Ce), Locality: Vastmanland, Sweden

Physical Properties of Vastmanlandite-(Ce)

Color:

Dark brown.

Luster:

Vitreous (Glassy)

Optical Properties of Vastmanlandite-(Ce)

Gladstone-Dale:

CI calc= -0.356 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2422,KC= 0.1786

Optical Data:

Biaxial (+), a=1.781, b=1.792, g=1.81, bire=0.0290

Calculated Properties of Vastmanlandite-(Ce)

Electron Density:

r_electron=3.05 gm/cc
note: r_{Vastmanlandite-(Ce)}=3.28 gm/cc.

Fermion Index

Fermion Index = 0.01097
Boson Index = 0.98903

Photoelectric:

PE_{Vastmanlandite-(Ce)}= 198.14 barns/electron
U=PE_{Vastmanlandite-(Ce)} x r_electron= 604.28 barns/cc.

Radioactivity:

GRapi = 39,314.36 (Gamma Ray American Petroleum Institute Units)

Vastmanlandite-(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) 773.68 ±193.42 grams of pure Vastmanlandite-(Ce) .

**Estimated Radioactivity from Vastmanlandite-(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 / 8.35 cm	887,920	2.40E-05	39,314.36	12.93
100 gm / 3.88 cm	88,792	2.40E-06	3,931.44	1.29
10 gm / 1.80 cm	8,879	2.40E-07	393.14	0.13
1 gm / 8.35 mm	888	2.40E-08	39.31	0.01
0.1 gm / 3.88 mm	89	2.40E-09	3.93	0.00
0.01 gm / 1.80 mm	9	2.40E-10	0.39	0.00
0.001 gm / 0.84 mm	1	2.40E-11	0.04	0.00

Weight of pure Vastmanlandite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.28 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 ( 1.98 % Th) From Sum REE Elements (39.64 % REE)

Vastmanlandite-(Ce) Classification

Dana Class:

58.2.1a.18 (58)Sorosilicate Insular, Mixed, Single, and Larger Tetrahedral Groups

(58.2)with cations in [6] and higher coordination; single and double groups (n=1,2)

(58.2.1a)Epidote group (Epidote subgroup)

58.2.1a.1 Allanite-(Ce) (Ce,Ca,Y)2(Al,Fe)3(SiO4)3(OH) P 2₁/m 2/m

58.2.1a.2 Allanite-(La)! Ca(REE,Ca)Al2(Fe,Fe)(SiO4)(Si2O7)O(OH) P 2₁/m 2/m

58.2.1a.3 Allanite-(Y) (Y,Ce,Ca)2(Al,Fe)3(SiO4)3(OH) P 2₁/m 2/m

58.2.1a.4 Clinozoisite Ca2Al3(SiO4)3(OH)=Ca2AlAl2(SiO4)(Si2O7)O(OH) P 2₁/m 2/m

58.2.1a.5 Dissakisite-(Ce) Ca(Ce,REE)(Mg,Fe)(Al,Fe)2Si3O12(OH) P 2₁/m 2/m

58.2.1a.6 Dollaseite-(Ce) CaCeMg2AlSi3O11(OH,F)2 P 2₁/m 2/m

58.2.1a.7 Epidote Ca2(Fe,Al)3(SiO4)3(OH)=Ca2(Fe,Al)Al2(SiO4)(Si2O7)O(OH) P 2₁/m 2/m

58.2.1a.8 Hancockite (Ca,Pb,Sr)2(Al,Fe)3(SiO4)(Si2O7)O(OH) P 2₁/m 2/m

58.2.1a.9 Khristovite-(Ce) (Ca,REE)(Ce,REE)(Mg,Fe,Cr,Ti,V,Al)MnAl(SiO4)(Si2O7)(OH)(F,O) P 2₁/m 2/m

58.2.1a.10 Mukhinite Ca2Al2V(SiO4)3(OH) P 2₁/m 2/m

58.2.1a.11 Piemontite Ca2(Al,Mn,Fe)3(SiO4)3(OH)=Ca2(Mn,Fe)Al2(SiO4)(Si2O7)O(OH) P 2₁/m 2/m

58.2.1a.12 Strontiopiemontite (Ca,Mn)(Sr,Ca)Mn(Al,Mn,Fe)2(SiO4)(Si2O7)O(OH) P 2₁/m 2/m

58.2.1a.13 Androsite-(La)! (Mn,Ca)(La,Ce,Ca,Nd)AlMnMn(SiO4)(Si2O7)O(OH) P 2₁/m 2/m

58.2.1a.14 Ferriallanite-(Ce)! CaCe(Fe,Fe,Al)3[SiO4][Si2O7]O(OH) P 2₁/m 2/m

58.2.1a.15 Tweddillite! CaSr(Mn,Fe)2Al[Si3O12](OH) P 2₁/m 2/m

58.2.1a.16 Gatelite-(Ce)! (Ca,Ce,La,Nd)4(Al,Mg,Fe)4[Si2O7][SiO4]3(O,F,OH)3 P 2₁/a 2/m

58.2.1a.17 Niigataite! CaSrAl3(Si2O7)(SiO4)O(OH) P 2₁/m 2/m

58.2.1a.18 Vastmanlandite-(Ce) ! Ce3CaMg2Al2Si5O19(OH)2F P 2₁/m 2/m

58.2.1a.19 IMA2002-049! (Mn,Ca)(Ce,REE)AlMnMn(Si2O7)(SiO4)O(OH) P 2₁/m 2/m

58.2.1a.20 Dissakisite-(La)! (Ca,Fe,Th)(REE,Ca)(Al,Cr,Ti)2(Mg,Fe,Al)Si3O12(OH,F)withLa>Ce P 2₁/m 2/m

58.2.1a.22 IMA2004-015! (Mn,Ca)(REE)VAlMn(Si2O7)(SiO4)O(OH) P 2₁/m 2/m

Strunz Class:

VIII/CX.00-00 VIII - Silicates

VIII/CX - Unclassified Strunz Sorosilicates

VIII/CX.00 - Epidote Group

Other Vastmanlandite-(Ce) Information

See Also:

Links to other databases for Vastmanlandite-(Ce) :
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

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Vastmanlandite-(Ce)

Ce3CaMg2Al2Si5O19(OH)2F
Dana No: 58.2.1a.18 Strunz No: VIII/CX.00-00
Locality:

Notes: