Bonaccordite Mineral Data + 
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- 24.2.1.1 Ludwigite Mg2FeBO5 Pbam 2/m 2/m 2/m
- 24.2.1.2 Vonsenite Fe2FeBO5 Pbam 2/m 2/m 2/m
- 24.2.1.3 Azoproite (Mg,Fe)2(Fe,Ti,Mg)BO5 Pbam 2/m 2/m 2/m
- 24.2.1.4 Bonaccordite Ni2FeBO5 Pbam 2/m 2/m 2/m
- 24.2.1.5 Chestermanite Mg2(Fe,Mg,Al,Sb)BO3O2 Pbam 2/m 2/m 2/m
- 24.2.1.6 Fredrikssonite Mg2(Mn,Fe)O2(BO3) Pbam 2/m 2/m 2/m
- V/G.04-10 Ludwigite Mg2FeBO5 Pbam 2/m 2/m 2/m
- V/G.04-20 Vonsenite Fe2FeBO5 Pbam 2/m 2/m 2/m
- V/G.04-30 Azoproite (Mg,Fe)2(Fe,Ti,Mg)BO5 Pbam 2/m 2/m 2/m
- V/G.04-40 Chestermanite Mg2(Fe,Mg,Al,Sb)BO3O2 Pbam 2/m 2/m 2/m
- V/G.04-50 Fredrikssonite Mg2(Mn,Fe)O2(BO3) Pbam 2/m 2/m 2/m
- V/G.04-60 Bonaccordite Ni2FeBO5 Pbam 2/m 2/m 2/m
- V/G.04-70 Takeuchiite Mg2MnO2(BO3) Pnnm 2/m 2/m 2/m
- V/G.04-80 Orthopinakiolite (Mg,Mn)2MnBO5 Pnnm 2/m 2/m 2/m
- V/G.04-90 Blatterite (Mn,Mg)35Sb3(Mn,Fe)9(BO3)16O32 Pnnm 2/m 2/m 2/m
- V/G.04-100 Gaudefroyite Ca4Mn3-x(BO3)3(CO3)(O,OH)3 P 63 6
General Bonaccordite Information |
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 Chemical Formula: |
Ni2Fe+++BO5 | ||
| Composition: |
Molecular Weight = 264.03 gm | ||
| Iron 21.15 % Fe 30.24 % Fe2O3 | |||
| Nickel 44.46 % Ni 56.58 % NiO | |||
| Boron 4.09 % B 13.18 % B2O3 | |||
| Oxygen 30.30 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Ni2Fe3+BO5 | ||
| IMA Status: |
Approved IMA 1974 | ||
| Locality: |
Link to MinDat.org Location Data. | ||
| Synonym: |
ICSD 71193 | ||
| PDF 29-939 | |||
Search for Bonaccordite Images | |||
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Images:
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Bonaccordite Crystallography |
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| Axial Ratios: |
a:b:c =0.7533:1:0.2454 | ||
| Cell Dimensions: |
a = 9.213, b = 12.229, c = 3.001, Z = 4; V = 338.11 Den(Calc)= 5.19 | ||
| Crystal System: |
Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pbam | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.514(1), 2.548(1), 5.1(0.5), | ||
Physical Properties of Bonaccordite |
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| Color: |
Reddish brown. | ||
| Density: |
5.17 | ||
| Diaphaniety: |
Opaque | ||
| Hardness: |
7 - Quartz | ||
| Luster: |
Vitreous - Adamantine | ||
| Streak: |
brown | ||
Optical Properties of Bonaccordite |
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| Optical Data: |
NCalc= 2.16 - from Gladstone-Dale relationship (KC = 0.2232) where Ncalc=Dcalc*KC+1 NCalc= 2.15 - from Gladstone-Dale relationship (KC = 0.2232) where Ncalc=Dmeas*KC+1 |
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Calculated Properties of Bonaccordite |
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| Electron Density: |
relectron=4.99 gm/cc |
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| Fermion Index |
Fermion Index = 0.0178 Boson Index = 0.9822 |
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| Photoelectric: |
PEBonaccordite = 24.37 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Bonaccordite is Not Radioactive |
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Bonaccordite Classification |
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| Dana Class: |
24.2.1.4 (24)Borates - Anhydrous | ||
| (24.2)where (A)2 BO2 [XO3] | |||
| (24.2.1)Ludwigite Group (Space Group: Pbam) | |||
| Strunz Class: |
V/G.04-60 V - Nitrates, Carbonates and Borates | ||
| V/G - "Insel" borates [BO3]3- "inseln" | |||
| V/G.04 - Ludwigite group | |||
Other Bonaccordite Information |
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| References: |
PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Bonaccordite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris Search for Bonaccordite using: Visit our Advertisers for Bonaccordite : Translate Bonaccordite Mineral Data : Ask about Bonaccordite here : Print or Cut-and-Paste your Bonaccordite Specimen Label here :
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