Yuanfuliite Mineral Data

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General Yuanfuliite Information

Chemical Formula:

(Mg,Fe++)(Fe+++,Al,Mg,Ti,Fe++)(BO3)O

Composition:

Molecular Weight = 150.33 gm

Magnesium 13.74 % Mg 22.79 % MgO

Titanium 3.19 % Ti 5.31 % TiO₂

Aluminum 3.59 % Al 6.78 % Al₂O₃

Iron 29.72 % Fe 14.34 % FeO / 26.56 % Fe₂O₃

Boron 7.19 % B 23.16 % B₂O₃

Oxygen 42.57 % O

______ ______

100.00 % 98.94 % = TOTAL OXIDE

Empirical Formula:

Mg_0.75Fe²⁺_0.3Fe³⁺_0.5Al_0.2Mg_0.1Ti_0.1(BO₃)O

Environment:

Disseminated in and between suanite crystal grains in crystalline magnesian marble.

IMA Status:

Approved IMA 1994

Locality:

Zhuanmiao boron deposit, Kuandian bounty, Liaoning Province, People's Republic of China. Link to MinDat.org Location Data.

Name Origin:

Named after Prof. Yuan Fuli (1893-1987).

Name Pronunciation:

Yuanfuliite + Pronunciation

Synonym:

IMA1994-001

Yuanfuliite Image

Images:

Yuanfuliite

Comments: Black inclusions of yuanfuliite in matrix.
Location: Tayeznoye Deposit, 100 km S. of Aldan, Yakutia, Russia. Scale: Specimen Size 1.2x2.2 cm.
© Diederik Visser

Yuanfuliite Crystallography

Axial Ratios:

a:b:c =0.99:1:0.3294

Cell Dimensions:

a = 9.258, b = 9.351, c = 3.081, Z = 4; V = 266.73 Den(Calc)= 3.74

Crystal System:

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

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

By Intensity(I/I_o): 2.57(1), 4.176(0.38), 2.957(0.3),

Crystal Structure:

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Help on Above

Appel P W U , Bigi S , Brigatti M F , European Journal of Mineralogy , 11 (1999) p.483-491, Crystal structure and chemistry of yuanfuliite, and its relationships with warwickite, Sample: 425359

View Additional jPOWD Structure files for Yuanfuliite
[1]

Physical Properties of Yuanfuliite

Cleavage:

{100} Perfect

Color:

Black.

Density:

4.02

Diaphaneity:

Nearly opaque

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Disseminated - Occurs in small, distinct particles dispersed in matrix.

Hardness:

6-6.5 - Orthoclase-Pyrite

Luster:

Adamantine

Streak:

brownish black

Optical Properties of Yuanfuliite

Optical Data:

Biaxial (?)

NCalc= 1.9 - from Gladstone-Dale relationship (KC = 0.2409) where Ncalc=Dcalc*KC+1
NCalc= 1.97 - from Gladstone-Dale relationship (KC = 0.2409) where Ncalc=Dmeas*KC+1

Pleochroism (x):

brown.

Pleochroism (z):

very dark brown or dark brownish red.

RL Anisotrophism:

Weak.

RL Color:

Pale gray with dark red internal reflections.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Yuanfuliite in Air**
λ	R	∑ R(λ)
420 nm	1.20
440 nm	7.70
460 nm	9.77
480 nm	10.11
500 nm	10.12
520 nm	10.03
540 nm	9.66
560 nm	9.40
580 nm	9.38
600 nm	9.27
620 nm	9.22
640 nm	9.98
660 nm	9.79
680 nm	5.33
700 nm	1.33

**Calculated Relative Intensity Colors of Yuanfuliite in Air**
Relative Intensity	0%	100%	200%	300%	400%	500%	600%	700%	800%	900%	1000%
R

Calculated Properties of Yuanfuliite

Electron Density:

Bulk Density (Electron Density)=3.62 gm/cc
note: Specific Gravity of Yuanfuliite =3.74 gm/cc.

Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Photoelectric:

PE_Yuanfuliite= 9.94 barns/electron
U=PE_Yuanfuliite x rElectron Density= 36.02 barns/cc.

Radioactivity:

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

Yuanfuliite Classification

Dana Class:

24.02.02.02 (24)Borates - Anhydrous

(24.02)where (A)2 BO2 [XO3]

(24.02.02)Dana Group

24.02.02.01 Warwickite Mg(Ti,Fe,Al)(BO3)O Pnam 2/m 2/m 2/m

24.02.02.02 Yuanfuliite (Mg,Fe)(Fe,Al,Mg,Ti,Fe)(BO3)O Pnam 2/m 2/m 2/m

Strunz Class:

06.AB.20 06 - BORATES

06.A - Monoborates

06.AB -BO3, with additional anions; 1(D) + OH, etc.

06.AB.20 Warwickite Mg(Ti,Fe,Al)(BO3)O Pnam 2/m 2/m 2/m

06.AB.20 Yuanfuliite (Mg,Fe)(Fe,Al,Mg,Ti,Fe)(BO3)O Pnam 2/m 2/m 2/m

Other Yuanfuliite Information

References:

NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.81,1996) OPTIC PROP.(AntBidBlaNic5)

See Also:

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

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Ask about Yuanfuliite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
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Print or Cut-and-Paste your Yuanfuliite Specimen Label here :

Yuanfuliite

(Mg,Fe++)(Fe+++,Al,Mg,Ti,Fe++)(BO3)O
Dana No: 24.02.02.02 Strunz No: 06.AB.20
Locality:

Notes: