Luobusaite Mineral Data

[New Updates] [Gallery 1] [Gallery 2] [Gallery 3] [Rock Shop Gallery]
Serving the mineral collector and educator community since 1970
Over 900,000 mineral specimens in stock
New minerals acquired weekly - Wright's Rock Shop

General Luobusaite Information

Chemical Formula:

Fe0.83Si2

Composition:

Molecular Weight = 102.52 gm

Iron 45.21 % Fe

Silicon 54.79 % Si

______

100.00 %

Empirical Formula:

Fe²⁺_0.83Si₂

Environment:

Recovered from a crushed and sieved fraction from a podiform chromitite in ophiolite.

IMA Status:

Approved IMA 2006 (Dana # Added)

Locality:

Luobusa mine, Indus-Yarlung Zangbo suture zone, Qusong County, Tibet Autonomous Region, People’s Republic of China. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

IMA2005-052a

Search for Luobusaite 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.

Luobusaite Crystallography

Axial Ratios:

a:b:c =1.2684:1:1.0057

Cell Dimensions:

a = 9.874, b = 7.784, c = 7.829, Z = 16; V = 601.73 Den(Calc)= 4.53

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: C mca

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

By Intensity(I/I_o): 1.844(1), 3.06(0.8), 1.889(0.6),1.865(0.4), 1.977(0.4), 2.402(0.25), 2.849(0.2), 1.75(0.15),

Physical Properties of Luobusaite

Cleavage:

None

Color:

Steel gray.

Diaphaneity:

Opaque

Fracture:

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

Habit:

Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks.

Hardness:

7 - Quartz

Luster:

Metallic

Streak:

black

Optical Properties of Luobusaite

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Luobusaite in Air**
λ	R	∑ R(λ)
400 nm	49.63
470 nm	44.41
540 nm	46.46
580 nm	49.71
650 nm	46.89
700 nm	47.74

**Calculated Relative Intensity Colors of Luobusaite in Air**
Relative Intensity	0%	20%	40%	60%	80%	100%	120%	140%	160%	180%	190%
R

Calculated Properties of Luobusaite

Electron Density:

Bulk Density (Electron Density)=4.38 gm/cc
note: Specific Gravity of Luobusaite =4.53 gm/cc.

Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Photoelectric:

PE_Luobusaite= 15.40 barns/electron
U=PE_Luobusaite x rElectron Density= 67.45 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Luobusaite is Not Radioactive

Luobusaite Classification

Dana Class:

01.01.23.05 (01)Native Elements

(01.01)with metallic elements other than the platinum group

(01.01.23)Suessite Group silicides

01.01.23.01 Suessite (Fe,Ni)3Si I m3m 4/m 3 2/m

01.01.23.02 Gupeiite Fe3Si F m3m 4/m 3 2/m

01.01.23.03 Xifengite Fe5Si3 P 6₃/mcm 6/m 2/m 2/m

01.01.23.04 Hapkeite! Fe2Si P m3m 4/m 3 2/m

01.01.23.05 Luobusaite! Fe0.83Si2 C mca 2/m 2/m 2/m

01.01.23.06 Mavlyanovite! Mn5Si3 P 6₃/mcm 6/m 2/m 2/m

01.01.23.07 Brownleeite! MnSi P 2₁3 2 3

Strunz Class:

01.BB.25 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)

01.B - Metallic Carbides, Silicides, Nitrides and Phosphides

01.BB -Silicides

01.BB.25 Luobusaite! Fe0.83Si2 C mca 2/m 2/m 2/m

Other Luobusaite Information

References:

NAME( AmMin, v92:1540) PHYS. PROP.(AmMin, v92:1540) OPTIC PROP.(AmMin, v92:1540)

See Also:

Links to other databases for Luobusaite :
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

Search for Luobusaite using:

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

Visit our Advertisers for Luobusaite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Luobusaite Mineral Data :

Ask about Luobusaite 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 Luobusaite Specimen Label here :

Luobusaite

Fe0.83Si2
Dana No: 01.01.23.05 Strunz No: 01.BB.25
Locality:

Notes: