Kuliokite-(Y) Mineral Data

Kuliokite-(Y) Mineral Data +

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General Kuliokite-(Y) Information

Chemical Formula:

(Y,REE)4Al(SiO4)2(OH)2F5

Composition:

Molecular Weight = 706.82 gm

La,Ce,Pr,Nd,Sm, 6.11 % RE 7.13 % REE₂O₃

Yttrium 45.28 % Y 57.51 % Y₂O₃

Aluminum 3.82 % Al 7.21 % Al₂O₃

Silicon 7.95 % Si 17.00 % SiO₂

Hydrogen 0.31 % H 2.80 % H₂O

Oxygen 23.09 % O

Fluorine 13.44 % F 13.44 % F

- % F -5.66 % -O=F₂

______ ______

100.00 % 99.43 % = TOTAL OXIDE

Empirical Formula:

Y_3.6REE_0.3Al(SiO₄)₂(OH)_2.2F₅

Environment:

As inclusions in fluorite or on fissures in microcline pegmatites.

IMA Status:

Approved IMA 1984

Locality:

From the [Keivy massif,] Kola Peninsula, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for Kuliok River, Kola Peninsula, Russia.

Synonym:

ICSD 62355

PDF 40-467

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Kuliokite-(Y) Crystallography

Axial Ratios:

a:b:c =0.9923:1:0.4978

Cell Dimensions:

a = 8.606, b = 8.672, c = 4.317, Z = 1; alpha = 102.79°, beta = 97.94°, gamma = 116.66° V = 278.09 Den(Calc)= 4.22

Crystal System:

Triclinic - PedialH-M Symbol (1) Space Group: P1

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

By Intensity(I/I_o): 2.793(1), 3.49(0.9), 3.71(0.9),

Physical Properties of Kuliokite-(Y)

Cleavage:

[010] Poor

Color:

Colorless, White, Light pink.

Density:

4.3

Diaphaniety:

Transparent

Habit:

Platy - Sheet forms (e.g. micas).

Hardness:

4-5 - Fluorite-Apatite

Luminescence:

Cathodolumiescence.

Luster:

Adamantine

Streak:

white

Optical Properties of Kuliokite-(Y)

Gladstone-Dale:

CI meas= 0.078 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.061 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1626,KPDmeas= 0.1596,KC= 0.1732

Optical Data:

Biaxial (-), a=1.656, b=1.7, g=1.703, bire=0.0470, 2V(Calc)=28, 2V(Meas)=19-29. Dispersion r > v.

Calculated Properties of Kuliokite-(Y)

Electron Density:

r_electron=3.92 gm/cc
note: r_{Kuliokite-(Y)}=4.22 gm/cc.

Fermion Index

Fermion Index = 0.01519
Boson Index = 0.98481

Photoelectric:

PE_{Kuliokite-(Y)}= 94.93 barns/electron
U=PE_{Kuliokite-(Y)} x r_electron= 372.36 barns/cc.

Radioactivity:

GRapi = 6,081.62 (Gamma Ray American Petroleum Institute Units)

Kuliokite-(Y) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

**Estimated Radioactivity from Kuliokite-(Y)** - mild
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 / 7.68 cm	137,398	3.71E-06	6,081.62	2.00
100 gm / 3.56 cm	13,740	3.71E-07	608.16	0.20
10 gm / 1.65 cm	1,374	3.71E-08	60.82	0.02
1 gm / 7.68 mm	137	3.71E-09	6.08	0.00
0.1 gm / 3.56 mm	14	3.71E-10	0.61	0.00
0.01 gm / 1.65 mm	1	3.71E-11	0.06	0.00
0.001 gm / 0.77 mm	0	3.71E-12	0.01	0.00

Weight of pure Kuliokite-(Y) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.22 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 ( 0.31 % Th) From Sum REE Elements ( 6.11 % REE)

Kuliokite-(Y) Classification

Dana Class:

78.7.8.1 (78)Unclassified silicates

(78.7)wholly unclassified silicates

(78.7.8)Dana Group

78.7.8.1 Kuliokite-(Y) (Y,REE)4Al(SiO4)2(OH)2F5 P1 1

Strunz Class:

VIII/B.19-10 VIII - Silicates

VIII/B - Nesosubsilicates, with anions unfamiliar to tetraheders, cationes with coordinationnumber between [8] and [12]

VIII/B.19 - Kuliokite-(Y) - Cerite-(Ce) series

VIII/B.19-10 Kuliokite-(Y) (Y,REE)4Al(SiO4)2(OH)2F5 P1 1

VIII/B.19-20 Tornebohmite-(Ce) (Ce,La,Nd)2Al(SiO4)2(OH) P 2₁/c 2/m

VIII/B.19-30 Tornebohmite-(La) (La,Ce)2Al(SiO4)2(OH) P 2₁/c 2/m

VIII/B.19-40 Cerite-(Ce) Ce9Fe(SiO4)6[(SiO3)(OH)](OH)3 R 3c 3m

VIII/B.19-50 Cerite-(La)! (La,Ce,Ca)9(Mg,Fe)(SiO4)6[SiO3(OH)](OH)3 R 3c 3m

Other Kuliokite-(Y) Information

References:

NAME( AntBidBlaNic2) PHYS. PROP.(AntBidBlaNic2) OPTIC PROP.(Am.Min.,Vol.73,p192,1988)

See Also:

Links to other databases for Kuliokite-(Y) :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (MinSocAm) 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST

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Kuliokite-(Y)

(Y,REE)4Al(SiO4)2(OH)2F5
Dana No: 78.7.8.1 Strunz No: VIII/B.19-10
Locality:

Notes: