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Brokenhillite

Formula:
Mn
 
8
Si
 
6
O
 
15
(OH)
 
10
System:Hexagonal
Name:Named for the type locality


Thought to be a new member of the pyrosmalite group, but this turned out to be erroneous.
Originally reported from Broken Hill, Yancowinna Co., New South Wales, Australia.

Classification of Brokenhillite

IMA status:Rejected 2001
Nickel-Strunz 10th (pending) edition ID:9.EE.10

9 : SILICATES (Germanates)
E : Phyllosilicates
E : Single tetrahedral nets of 6-membered rings connected by octahedral nets or octahedral bands
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Crystallography of Brokenhillite

Crystal System:Hexagonal
Class (H-M):6mm - Dihexagonal Pyramidal
Space Group:P63mc
Cell Parameters:a = 13.481Å, c = 14.084Å
Ratio:a:c = 1 : 1.045
Unit Cell Volume:V 2,216.67 ų (Calculated from Unit Cell)

Chemical Properties of Brokenhillite

Formula:
Mn
 
8
Si
 
6
O
 
15
(OH)
 
10
Idealised Formula:
(Mn,Fe)
 
32
[Si
 
24
O
 
60
](OH)
 
29
Cl
 
11
Essential elements:H, Mn, O, Si
All elements listed in formula:H, Mn, O, Si

Relationship of Brokenhillite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.EE.05Bementite
Mn
 
5
Si
 
4
O
 
10
(OH)
 
6
9.EE.10Pyrosmalite-(Fe)
(Fe,Mn)
 
8
Si
 
6
O
 
15
(OH,Cl)
 
10
9.EE.10Friedelite
(Mn,Fe)
 
8
Si
 
6
O
 
15
(OH,Cl)
 
10
9.EE.10Pyrosmalite-(Mn)
(Mn,Fe)
 
8
Si
 
6
O
 
15
(OH,Cl)
 
10
9.EE.10Mcgillite
(Mn,Fe)
 
8
Si
 
6
O
 
15
(OH)
 
8
Cl
 
2
9.EE.15Nelenite
(Mn,Fe)
 
16
(Si
 
12
O
 
30
)(OH)
 
14
[As
3+
3
O
 
6
(OH)
 
3
]
9.EE.15Schallerite
(Mn,Fe)
 
16
Si
 
12
As
 
3
O
 
36
(OH)
 
17
9.EE.20Palygorskite
(Mg,Al)
 
5
(Si,Al)
 
8
O
 
20
(OH)
 
2
·8H
 
2
O
9.EE.20Tuperssuatsiaite
Na
 
2
Fe
 
3
Si
 
8
O
 
20
(OH)
 
2
·4H
 
2
O
9.EE.20Yofortierite
Mn
 
5
Si
 
8
O
 
20
(OH)
 
2
·8-9H
 
2
O
9.EE.25Falcondoite
(Ni,Mg)
 
4
Si
 
6
O
 
15
(OH)
 
2
·6H
 
2
O
9.EE.25Loughlinite
Na
 
2
Mg
 
3
Si
 
6
O
 
16
·8H
 
2
O
9.EE.25Sepiolite
Mg
 
4
Si
 
6
O
 
15
(OH)
 
2
·6H
 
2
O
9.EE.25Kalifersite
(K,Na)
 
5
Fe
3+
7
Si
 
20
O
 
50
(OH)
 
6
·12H
 
2
O
9.EE.30Gyrolite
Ca
 
4
(Si
 
6
O
 
15
)(OH)
 
2
·3H
 
2
O
9.EE.30Orlymanite
Ca
 
4
Mn
 
3
Si
 
8
O
 
20
(OH)
 
6
·2H
 
2
O
9.EE.30Tungusite
Ca
 
4
Fe
 
2
Si
 
6
O
 
15
(OH)
 
6
9.EE.35Reyerite
(Na,K)
 
2
Ca
 
14
(Si,Al)
 
24
O
 
58
(OH)
 
8
·6H
 
2
O
9.EE.35Truscottite
(Ca,Mn)
 
14
Si
 
24
O
 
58
(OH)
 
8
·2H
 
2
O
9.EE.40Natrosilite
Na
 
2
Si
 
2
O
 
5
9.EE.45Makatite
Na
 
2
Si
 
4
O
 
8
(OH)
 
2
·4H
 
2
O
9.EE.50Varennesite
Na
 
8
Mn
 
2
Si
 
10
O
 
25
(OH,Cl)
 
2
·12H
 
2
O
9.EE.55Raite
Na
 
4
Mn
2+
3
Ti
 
0.25
Si
 
8
O
 
20
(OH)
 
2
·10H
 
2
O
9.EE.60Intersilite
Na
 
6
Mn
2+
 
Ti[Si
 
10
O
 
24
(OH)](OH)
 
3
·4H
 
2
O
9.EE.65Shafranovskite
(Na,K)
 
6
(Mn,Fe)
 
3
Si
 
9
O
 
24
·6H
 
2
O
9.EE.65Zakharovite
Na
 
4
Mn
 
5
Si
 
10
O
 
24
(OH)
 
6
·6H
 
2
O
9.EE.70Zeophyllite
Ca
 
4
Si
 
3
O
 
8
(OH,F)
 
4
·2H
 
2
O
9.EE.75Minehillite
(K,Na)
 
2-3
Ca
 
28
Zn
 
4
Al
 
4
Si
 
40
O
 
112
(OH)
 
16
9.EE.80Fedorite
(Na,K)
 
2-3
(Ca
 
4
Na
 
3
)Si
 
16
O
 
38
F
 
2
 · 3.5H
 
2
O
9.EE.80Martinite
(Na,Ca)
 
11
Ca
 
4
(Si,S,B)
 
14
B
 
2
O
 
40
F
 
2
·4H
 
2
O
9.EE.85Lalondeite
(Na,Ca)
 
6
(Ca,Na)
 
3
Si
 
16
O
 
38
(F,OH)
 
2
·3H
 
2
O

Other Names for Brokenhillite

Other Languages:
German:Brokenhillit
Spanish:Brokenhillita

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 Brokenhillite

Reference List:Czank, M. (1987): Structure determination and HRTEM investigation of a new pyrosmalite group mineral. Collected Abstracts, 14th International Congress of Crystallogrpahy, C-155 (1987)[Am. Min. 74,1399(1989) abstract]

Internet Links for Brokenhillite

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    Localities for Brokenhillite

    Hide Locality List
    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.
    Australia
     
    • New South Wales
      • Yancowinna Co.
    		Am Min 74 (1989), 1399
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 16th Oct 2009 11:42:33