Kukharenkoite-(La) Mineral Data

Kukharenkoite-(La) Mineral Data +

[Register] [Auction Rules] [Current Listing] [About Us] [Site Map]
e-Rocks.com, auction and sales venue for all rock and mineral enthusiasts
Our mission is to provide an online centre for Buyers and Sellers with reliable service and support
Brought to you by Thames Valley Minerals

General Kukharenkoite-(La) Information

Chemical Formula:

Ba2(La,Ce)(CO3)3F

Composition:

Molecular Weight = 605.99 gm

Potassium 0.26 % K 0.31 % K₂O

Barium 39.88 % Ba 44.53 % BaO

Sodium 0.19 % Na 0.26 % Na₂O

Strontium 2.02 % Sr 2.39 % SrO

Calcium 0.73 % Ca 1.02 % CaO

Lanthanum 9.63 % La 11.29 % La₂O₃

Cerium 4.62 % Ce 5.42 % Ce₂O₃

Praeseodymium 0.70 % Pr 0.82 % Pr₂O₃

Thorium 8.42 % Th 9.59 % ThO₂

Carbon 5.89 % C 21.57 % CO₂

Neodymium 0.71 % Nd 0.83 % Nd₂O₃

Oxygen 23.52 % O

Fluorine 3.42 % F 3.42 % F

- % F -1.44 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ba_1.76Sr_0.14K_0.04La_0.42Th_0.22Ce_0.2Ca_0.11Na_0.05Pr_0.03Nd_0.03(CO₃)_2.97F_1.09

Environment:

Late hydrothermal assemblege in cavities in pegmatites. La-dominant analogue of kukharenkoite-(Ce); structure determined.

IMA Status:

Approved IMA 2003 (Dana # Added)

Locality:

Kirovsky mine, Mount Kukisvumchorr, Khibina massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.

Name Origin:

Named as the La dominant analogue of kukharenkoite-Ce).

Synonym:

IMA2002-019

Search for Kukharenkoite-(La) Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Kukharenkoite-(La) Crystallography

Axial Ratios:

a:b:c =2.621:1:1.3054

Cell Dimensions:

a = 13.396, b = 5.111, c = 6.672, Z = 2; beta = 106.63° V = 437.70 Den(Calc)= 4.60

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): 3.27(1)(310,401,202), 4.01(1)(111,201), 1.998(0.8)(421,222,511, 2.14(0.8)(221,512,600), 2.54(0.5)(020,112), 1.636(0.2), 2.38(0.2), 1.37(0.2)(910,424,712,71

Physical Properties of Kukharenkoite-(La)

Cleavage:

None

Color:

Pale leek green, Colorless, White.

Diaphaniety:

Transparent to Translucent

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Hardness:

4 - Fluorite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Kukharenkoite-(La)

Gladstone-Dale:

CI calc= 0.051 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1457,KC= 0.1536

Optical Data:

Biaxial (-), a=1.581, b=1.715, g=1.715, bire=0.1340, 2V(Calc)=0, 2V(Meas)=5. Dispersion dispersion not observed.

Calculated Properties of Kukharenkoite-(La)

Electron Density:

r_electron=4.03 gm/cc
note: r_{Kukharenkoite-(La)}=4.60 gm/cc.

Fermion Index

Fermion Index = 0.07481
Boson Index = 0.92519

Photoelectric:

PE_{Kukharenkoite-(La)}= 467.67 barns/electron
U=PE_{Kukharenkoite-(La)} x r_electron=1,883.01 barns/cc.

Radioactivity:

GRapi = 157,305.39 (Gamma Ray American Petroleum Institute Units)

Kukharenkoite-(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) 193.36 ± 48.34 grams of pure Kukharenkoite-(La) .

**Estimated Radioactivity from Kukharenkoite-(La)** - strong
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 / 7.46 cm	3,774,035	1.02E-04	157,305.39	51.72
100 gm / 3.46 cm	377,404	1.02E-05	15,730.54	5.17
10 gm / 1.61 cm	37,740	1.02E-06	1,573.05	0.52
1 gm / 7.46 mm	3,774	1.02E-07	157.31	0.05
0.1 gm / 3.46 mm	377	1.02E-08	15.73	0.01
0.01 gm / 1.61 mm	38	1.02E-09	1.57	0.00
0.001 gm / 0.75 mm	4	1.02E-10	0.16	0.00

Weight of pure Kukharenkoite-(La) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.60 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

Kukharenkoite-(La) Classification

Dana Class:

16a.1.8.3 (16a)Carbonates - Hydroxyl or Halogen

(16a.1)in the Bastnasite/Shynchysite/Parasite Groups

(16a.1.8)Dana Group

16a.1.8.1 Zhonghuacerite-(Ce) Ba2Ce(CO3)3F P 2₁/m 2/m

16a.1.8.2 Kukharenkoite-(Ce)! Ba2Ce(CO3)3F P 2₁/m 2/m

16a.1.8.3 Kukharenkoite-(La) ! Ba2(La,Ce)(CO3)3F P 2₁/m 2/m

Strunz Class:

V/C.07-154 V - Nitrates, Carbonates and Borates

V/C - Waterfree carbonates with unfamiliar anions

V/C.07 - Bastnäsite-(Y) - Mineevite-(Y) series

V/C.07-10 Bastnasite-(Y) Y(CO3)F P 62c 6 m2

V/C.07-20 Bastnasite-(La) La(CO3)F P 62c 6 m2

V/C.07-30 Bastnasite-(Ce) Ce(CO3)F P 62c 6 m2

V/C.07-40 Hydroxylbastnasite-(La) La(CO3)(OH) C 222₁ 2 2 2

V/C.07-50 Hydroxylbastnasite-(Ce) Ce(CO3)(OH) P 62c 6 m2

V/C.07-60 Hydroxylbastnasite-(Nd) Nd(CO3)(OH) P 62c 6 m2

V/C.07-61 Kozoite-(Nd)! (Nd,La,Sm,Pr)(CO3)(OH) Pmcn 2/m 2/m 2/m

V/C.07-62 Kozoite-(La)! La(CO3)(OH) Pmcn 2/m 2/m 2/m

V/C.07-64 Horvathite-(Y)! NaY(CO3)F2 Pmcn 2/m 2/m 2/m

V/C.07-70 Parisite-(Ce) Ca(Ce,La)2(CO3)3F2 R 3 3

V/C.07-80 Parisite-(Nd) Ca(Nd,Ce,La)2(CO3)3F2 R 3 3

V/C.07-90 Rontgenite-(Ce) Ca2(Ce,La)3(CO3)5F3 R 3 3

V/C.07-100 Synchysite-(Y) CaY(CO3)2F C 2/c 2/m

V/C.07-110 Synchysite-(Ce) CaCe(CO3)2F C 2/c 2/m

V/C.07-120 Synchysite-(Nd) CaNd(CO3)2F Unk Ortho

V/C.07-130 Huanghoite-(Ce) BaCe(CO3)2F R 3m 3 2/m

V/C.07-140 Cebaite-(Ce) Ba3Ce2(CO3)5F2 C 2/m or C 2 Mono

V/C.07-150 Cebaite-(Nd)! Ba3(Nd,Ce)2(CO3)5F2 Unk Mono

V/C.07-154 Kukharenkoite-(La) Ba2(La,Ce)(CO3)3F P 2₁/m 2/m

V/C.07-155 Kukharenkoite-(Ce)! Ba2Ce(CO3)3F P 2₁/m 2/m

V/C.07-160 Zhonghuacerite-(Ce) Ba2Ce(CO3)3F P 2₁/m 2/m

V/C.07-170 Cordylite-(Ce) Ba(Ce,La)2(CO3)3F2 P 6₃/mmc 6/m 2/m 2/m

V/C.07-175 Lukechangite-(Ce)! Na3Ce2(CO3)4F P 6₃/mmc 6/m 2/m 2/m

V/C.07-190 Mineevite-(Y) Na25Ba(Y,Gd,Dy)2(HCO3)4(CO3)11(SO4)2ClF2 P 6₃/m 6/m

V/C.07-200 Reederite-(Y)! Na15Y2(CO3)9(SO3F)Cl P 6 6

V/C.07-210 Micheelsenite! (Ca,Y)3Al[PO3OH,CO3](CO3)(OH)6·12(H2O) P 6₃ 6

Other Kukharenkoite-(La) Information

References:

NAME( CanMin, v 42, p 928) PHYS. PROP.(CanMin, v 42, p 928) OPTIC PROP.(CanMin, v 42, p 928)

See Also:

Links to other databases for Kukharenkoite-(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

Search for Kukharenkoite-(La) using:

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

Visit our Advertisers for Kukharenkoite-(La) :

AA Mineral Specimens

B & L Fine Minerals

Crystal Vaults

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

MineralsWeb Fine Minerals

Rockshop.cz

T G Fine Minerals

Wrights Rock Shop

Translate Kukharenkoite-(La) Mineral Data :

Ask about Kukharenkoite-(La) 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 Kukharenkoite-(La) Specimen Label here :

Kukharenkoite-(La)

Ba2(La,Ce)(CO3)3F
Dana No: 16a.1.8.3 Strunz No: V/C.07-154
Locality:

Notes: