Loranskite-(Y) Mineral Data

Advertisment

Dakota Matrix was founded in 1996 and has offered systematic and rare mineral specimens online since 1998.

Exceptional Minerals features excellent, high quality mineral specimens for sale. We also have a weekly Best Offer Mineral Auction.

Weinrich Minerals, A Dealer in Fine Mineral Specimens - Since 1989. We buy collections and single high quality specimens.

General Loranskite-(Y) Information

Chemical Formula:

(Y,Ce,Ca)ZrTaO6 (?)

Composition:

Molecular Weight = 464.38 gm

Calcium 2.59 % Ca 3.62 % CaO

Cerium 3.02 % Ce 3.53 % Ce₂O₃

Yttrium 9.57 % Y 12.16 % Y₂O₃

Zirconium 17.68 % Zr 23.88 % ZrO₂

Tantalum 42.86 % Ta 52.34 % Ta₂O₅

Iron 3.61 % Fe 4.64 % FeO

Oxygen 20.67 % O

______ ______

100.00 % 100.17 % = TOTAL OXIDE

Empirical Formula:

Y_0.5Ca_0.3Fe²⁺_0.3Ce_0.1Ta_1.1Zr_0.9O₆

Environment:

An ill-defined mineral of uncertain origin and formula. In a pegmatite.

IMA Status:

Valid Species (Pre-IMA) 1899

Locality:

Impilaks, Lake Ladoga, Finland. Link to MinDat.org Location Data.

Name Origin:

Named for Apollonie Mikhailovich Loranski (1847-1917), inspector and teacher of the Mining Institute, St. Petersburg, Russia.

Name Pronunciation:

Loranskite-(Y) + Pronunciation

Search for Loranskite-(Y) 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.

Loranskite-(Y) Crystallography

Crystal System:

OrthorhombicSpace Group: Unk

Physical Properties of Loranskite-(Y)

Cleavage:

None

Color:

Brownish black, Green yellow, Yellow, Black.

Density:

4.4 - 4.8, Average = 4.59

Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Habit:

Metamict - Mineral originally crystalline, now amorphous due to radiation damage.

Hardness:

5 - Apatite

Luster:

Sub Metallic

Streak:

greenish gray

Optical Properties of Loranskite-(Y)

Optical Data:

NCalc= 1.79 - from Gladstone-Dale relationship (KC = 0.1715) where Ncalc=Dmeas*KC+1

Calculated Properties of Loranskite-(Y)

Electron Density:

Bulk Density (Electron Density)=4.03 gm/cc
note: Specific Gravity of Loranskite-(Y) =4.60 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_{Loranskite-(Y)}= 560.07 barns/electron
U=PE_{Loranskite-(Y)} x r_electron=2,256.85 barns/cc.

Radioactivity:

GRapi = 2,819.31 (Gamma Ray American Petroleum Institute Units)
Concentration of Loranskite-(Y) per GRapi unit = 354.70 (PPM)

**Estimated Radioactivity from Loranskite-(Y)** - mild
Specimen Size Weight/Volume (Sphere) *	Calculated Activity Becquerels (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	67,586	1.83E-06	2,819.31	0.93
100 gm / 3.46 cm	6,759	1.83E-07	281.93	0.09
10 gm / 1.61 cm	676	1.83E-08	28.19	0.01
1 gm / 7.46 mm	68	1.83E-09	2.82	0.00
0.1 gm / 3.46 mm	7	1.83E-10	0.28	0.00
0.01 gm / 1.61 mm	1	1.83E-11	0.03	0.00
0.001 gm / 0.75 mm	0	1.83E-12	0.00	0.00

Weight of pure Loranskite-(Y) 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
Estimated Thorium Activity ( 0.15 % Th) From Sum REE Elements ( 3.02 % REE)

Loranskite-(Y) Classification

Dana Class:

08.01.05.01 (08)Multiple Oxides with Nb, Ta, and Ti

(08.01)where A BO4

(08.01.05)Dana Group

08.01.05.01 Loranskite-(Y) (Y,Ce,Ca)ZrTaO6(?) Unk Ortho

Strunz Class:

04.DG.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.D - Metal:Oxygen = 1:2 and similar

04.DG -With large (± medium-sized) cations; chains of edge-sharing octahedra

04.DG.05 Fersmite (Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6 Pcan 2/m 2/m 2/m

04.DG.05 Euxenite-(Y) (Y,Ca,Ce)(Nb,Ta,Ti)2O6 Pcan 2/m 2/m 2/m

04.DG.05 Kobeite-(Y) (Y,U)(Ti,Nb)2(O,OH)6(?) Cubic Cubic

04.DG.05 Loranskite-(Y) (Y,Ce,Ca)ZrTaO6(?) Unk Ortho

04.DG.05 Polycrase-(Y) (Y,Ca,Ce,U,Th)(Ti,Nb,Ta)2O6 Pcan 2/m 2/m 2/m

04.DG.05 Tanteuxenite-(Y) (Y,Ce,Ca)(Ta,Nb,Ti)2(O,OH)6 Pcan 2/m 2/m 2/m

04.DG.05 Uranopolycrase (U,Y)(Ti,Nb,Ta)2O6 P bcn 2/m 2/m 2/m

04.DG.05 Yttrocrasite-(Y) (Y,Th,Ca,U)(Ti,Fe)2(O,OH)6 Unk Ortho

Other Loranskite-(Y) Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Loranskite-(Y) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

Search for Loranskite-(Y) using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Loranskite-(Y) :

A Bijoux Google Search for Loranskite-(Y)
Adam's Minerals Google Search for Loranskite-(Y)
Cape Minerals Google Search for Loranskite-(Y)
Dakota Matrix Minerals Google Search for Loranskite-(Y)
Excalibur Mineral Corp. Google Search for Loranskite-(Y)
Exceptional Minerals Google Search for Loranskite-(Y)
John Betts Fine Minerals Search for Loranskite-(Y)
McDougall Minerals Google Search for Loranskite-(Y)
Mineral News Website Link
Rock and Mineral Shows Google Search for Loranskite-(Y)
Weinrich Minerals, Inc. Google Search for Loranskite-(Y)

Ask about Loranskite-(Y) 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 Loranskite-(Y) Specimen Label here :

Loranskite-(Y)

(Y,Ce,Ca)ZrTaO6 (?)
Dana No: 08.01.05.01 Strunz No: 04.DG.05
Locality:

Notes: