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Bonaccordite

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Formula:
Ni
 
2
Fe
3+
 
(BO
 
3
)O
 
2
System:OrthorhombicColour:Reddish-brown, light grey
Hardness:7
Member of:Ludwigite Group
Name:Named for the type locality at Bon Accord, South Africa.
This page provides mineralogical data about Bonaccordite.

Classification of Bonaccordite

IMA status:Approved 1974
Strunz 8th edition ID:5/G.04-40
Nickel-Strunz 10th (pending) edition ID:6.AB.30

6 : BORATES
A : Monoborates
B : BO3, with additional anions; 1(D) + OH, etc.
Dana 8th edition ID:24.2.1.4

24 : ANHYDROUS BORATES
2 : A2BO2[XO3]
Hey's CIM Ref.:9.9.1

9 : Borates
9 : Borates of Ni
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Type Occurrence of Bonaccordite

Type Locality:Scotia Talc mine, Bon Accord, Barberton, Ehlanzeni District, Mpumalanga Province, South Africa
Year of Discovery:1974

Physical Properties of Bonaccordite

Colour:Reddish-brown, light grey
Hardness (Mohs):7

Crystallography of Bonaccordite

Crystal System:Orthorhombic
Cell Parameters:a = 9.21Å, b = 12.22Å, c = 3Å
Ratio:a:b:c = 0.754 : 1 : 0.245
Unit Cell Volume:V 337.64 ų (Calculated from Unit Cell)

Chemical Properties of Bonaccordite

Formula:
Ni
 
2
Fe
3+
 
(BO
 
3
)O
 
2
Simplified for copy/paste:Ni2Fe3+(BO3)O2
Essential elements:B, Fe, Ni, O
All elements listed in formula:B, Fe, Ni, O

Relationship of Bonaccordite to other Species

Member of:Ludwigite Group
Other Members of Group:

- +
Azoproite
(Mg,Fe
2+
 
)
 
2
(Fe
3+
 
,Ti,Mg)(BO
 
3
)O
 
2
Fredrikssonite
Mg
 
2
(Mn
3+
 
,Fe
3+
 
)(BO
 
3
)O
 
2
Ludwigite
Mg
 
2
Fe
3+
 
(BO
 
3
)O
 
2
Vonsenite
Fe
2+
2
Fe
3+
 
(BO
 
3
)O
 
2
Related Minerals - Nickel-Strunz Grouping):

- +
6.AB.05Hambergite
Be
 
2
(BO
 
3
)(OH)
6.AB.10Berborite
Be
 
2
(BO
 
3
)(OH,F) · H
 
2
O
6.AB.15Jeremejevite
Al
 
6
(BO
 
3
)
 
5
(F,OH)
 
3
6.AB.20Warwickite
(Mg,Fe
2+
 
)
 
3
Ti(BO
 
3
)
 
2
O
 
2
6.AB.20Yuanfuliite
Mg(Fe
3+
 
,Fe
2+
 
,Al,Ti,Mg)(BO
 
3
)O
6.AB.25Karlite
Mg
 
7
(BO
 
3
)
 
3
(OH,Cl)
 
5
6.AB.30Azoproite
(Mg,Fe
2+
 
)
 
2
(Fe
3+
 
,Ti,Mg)(BO
 
3
)O
 
2
6.AB.30Fredrikssonite
Mg
 
2
(Mn
3+
 
,Fe
3+
 
)(BO
 
3
)O
 
2
6.AB.30Ludwigite
Mg
 
2
Fe
3+
 
(BO
 
3
)O
 
2
6.AB.30Vonsenite
Fe
2+
2
Fe
3+
 
(BO
 
3
)O
 
2
6.AB.35Pinakiolite
(Mg,Mn
2+
 
)
 
2
Mn
3+
 
(BO
 
3
)O
 
2
6.AB.40Blatterite
(Mn
2+
 
,Mg)
 
2
(Mn
3+
 
,Sb
3+
 
,Fe
3+
 
)(BO
 
3
)O
 
2
6.AB.40Chestermanite
Mg
 
2
(Fe
3+
 
,Mn
3+
 
,Al,Sb
3+
 
)(BO
 
3
)O
 
2
6.AB.40Orthopinakiolite
(Mg,Mn
2+
 
)
 
2
Mn
3+
 
(BO
 
3
)O
 
2
6.AB.40Takéuchiite
(Mg,Mn
2+
 
)
 
2
(Mn
3+
 
,Fe
3+
 
)(BO
 
3
)O
 
2
6.AB.45Hulsite
(Fe
2+
 
,Mg)
 
2
(Fe
3+
 
,Sn)(BO
 
3
)O
 
2
6.AB.45Magnesiohulsite
(Mg,Fe
2+
 
)
 
2
(Fe
3+
 
,Sn,Mg)(BO
 
3
)O
 
2
6.AB.45Aluminomagnesiohulsite
(Mg,Fe
2+
 
)
 
2
(Al,Mg,Sn)(BO
 
3
)O
 
2
6.AB.50Fluoborite
Mg
 
3
(BO
 
3
)(F,OH)
 
3
6.AB.50Hydroxylborite
Mg
 
3
(BO
 
3
)(OH)
 
3
6.AB.55Shabynite
Mg
 
5
(BO
 
3
)(OH)
 
5
(Cl,OH)
 
2
· 4H
 
2
O
6.AB.55Wightmanite
Mg
 
5
(BO
 
3
)O(OH)
 
5
· 2H
 
2
O
6.AB.60Gaudefroyite
Ca
 
4
Mn
3+
2-3
(BO
 
3
)
 
3
(CO
 
3
)(O,OH)
 
3
6.AB.65Sakhaite
Ca
 
12
Mg
 
4
(BO
 
3
)
 
7
(CO
 
3
)
 
4
(OH)
 
2
Cl
6.AB.70Harkerite
Ca
 
12
Mg
 
4
Al(BO
 
3
)
 
3
(SiO
 
4
)
 
4
(CO
 
3
)
 
5
· H
 
2
O
6.AB.75Pertsevite-(F)
Mg
 
2
(BO
 
3
)(F,OH)
6.AB.75Pertsevite-(OH)
Mg
 
2
(BO
 
3
)(OH)
6.AB.80Jacquesdietrichite
Cu
 
2
(H
 
2
BO
 
3
)(OH)
 
3
6.AB.85Painite
CaZrAl
 
9
(BO
 
3
)O
 
15

Other Names for Bonaccordite

Synonyms:
IMA1974-019
Other Languages:
German:Bonaccordit
Spanish:Bonaccordita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Bonaccordite

Reference List:

- +
American Mineralogist: 61: 502.

Internet Links for Bonaccordite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Bonaccordite details from Handbook of Mineralogy (PDF)
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  • Localities for Bonaccordite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    South Africa
     
    • Mpumalanga Province
      • Ehlanzeni District
        • Barberton
          • Bon Accord
    [Trans.Geol.Soc.S.Afr.(1974) 77, 373; Nickel & Nichols, 1991 - "Mineral Reference Manual, p25]
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    Updated Mineral Entry: AmesiteFrom Uwe Kolitsch, 1st Sep 2014 18:19:05