Azoproite Mineral Data
General Azoproite Information
Chemical Formula:
(Mg,Fe++)2(Fe+++,Ti,Mg)BO5
Composition:
Molecular Weight = 186.49 gm
Magnesium 26.98 % Mg 44.74 % MgO
Titanium 9.24 % Ti 15.42 % TiO2
Iron 14.97 % Fe 5.01 % FeO / 15.84 % Fe2 O3
Boron 5.91 % B 19.04 % B2 O3
Oxygen 42.90 % O
______ ______
100.00 % 100.04 % = TOTAL OXIDE
Empirical Formula:
Mg1.82 Fe2+ 0.13 Fe3+ 0.37 Ti0.36 Mg0.25 B1.02 O5
Environment:
Late-stage mineral in the border zone in magnesian contact-metamorphic rocks associated with syenites
IMA Status:
Approved IMA 1970
Locality:
Tazheran alkalic massif, west of Lake Baikal, eastern Siberia, Russia. Link to MinDat.org Location Data.
Name Origin:
Named from a Russian acronym honoring the Study of Deep Zones of the Earth�s Crust (AZOPRO in Russian) sponsored in 1969 by the International Geological Association.
Name Pronunciation:
Azoproite + Pronunciation
Azoproite Image
Images:
Azoproite Crystallography
Axial Ratios:
a:b:c =0.7559:1:0.2457
Cell Dimensions:
a = 9.26, b = 12.25, c = 3.01, Z = 4; V = 341.44 Den(Calc)= 3.63
Crystal System:
Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pbam
X Ray Diffraction:
By Intensity(I/Io ): 2.57(1), 5.07(0.8), 2.16(0.6),
Physical Properties of Azoproite
Cleavage:
{010} Good, {001} Distinct
Color:
Black.
Density:
3.63
Diaphaneity:
Transparent to Subopaque
Fracture:
Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Hardness:
5.5 - Knife Blade
Luster:
Adamantine
Streak:
gray
Optical Properties of Azoproite
Gladstone-Dale:
CI meas = 0.092 (Poor) - where the CI = (1-KPDmeas /KC ) CI calc = 0.092 (Poor) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.2274,KPDmeas = 0.2274,KC = 0.2503 Ncalc = 1.91
Optical Data:
Biaxial (+), a=1.799, b=1.822, g=1.855, bire=0.0560
Calculated Properties of Azoproite
Electron Density:
Bulk Density (Electron Density)=3.54 gm/cc note: Specific Gravity of Azoproite =3.63 gm/cc.
Fermion Index:
Fermion Index = 0.05 Boson Index = 0.95
Photoelectric:
PEAzoproite = 6.65 barns/electronU=PEAzoproite x r Electron Density= 23.52 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Azoproite is Not Radioactive
Azoproite Classification
Dana Class:
24.02.01.03 (24) Borates - Anhydrous
(24.02) where (A)2 BO2 [XO3]
(24.02.01) Ludwigite Group (Space Group: Pbam)
24.02.01.01 Ludwigite Mg2FeBO5 Pbam 2/m 2/m 2/m
24.02.01.02 Vonsenite Fe2FeBO5 Pbam 2/m 2/m 2/m
24.02.01.03 Azoproite (Mg,Fe)2(Fe,Ti,Mg)BO5 Pbam 2/m 2/m 2/m
24.02.01.04 Bonaccordite Ni2FeBO5 Pbam 2/m 2/m 2/m
24.02.01.05 Chestermanite Mg2(Fe,Mg,Al,Sb)BO3O2 Pbam 2/m 2/m 2/m
24.02.01.06 Fredrikssonite Mg2(Mn,Fe)O2(BO3) Pbam 2/m 2/m 2/m
Strunz Class:
06.AB.30 06 - BORATES
06.A - Monoborates
06.AB -BO3, with additional anions; 1(D) + OH, etc.
06.AB.30 Azoproite (Mg,Fe)2(Fe,Ti,Mg)BO5 Pbam 2/m 2/m 2/m
06.AB.30 Bonaccordite Ni2FeBO5 Pbam 2/m 2/m 2/m
06.AB.30 Fredrikssonite Mg2(Mn,Fe)O2(BO3) Pbam 2/m 2/m 2/m
06.AB.30 Ludwigite Mg2FeBO5 Pbam 2/m 2/m 2/m
06.AB.30 Vonsenite Fe2FeBO5 Pbam 2/m 2/m 2/m
Other Azoproite Information
References:
NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
See Also:
Links to other databases for Azoproite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
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Print or Cut-and-Paste your Azoproite Specimen Label here :
Azoproite
(Mg,Fe++)2(Fe+++,Ti,Mg)BO5
Dana No: 24.02.01.03 Strunz No: 06.AB.30
Locality:
Notes:
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