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Bruce mine, Sishen, Kathu, Postmasburg manganese field, Northern Cape, South Africai
Regional Level Types
Bruce mineMine
Sishen- not defined -
Kathu- not defined -
Postmasburg manganese field- not defined -
Northern CapeProvince
South AfricaCountry

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Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude: 28° South , 26° East (est.)
Margin of Error:~375km
Locality type:Mine


High-grade iron ore mine.

Located close to the Sishen mine.

Mn minerals are found within Wolhaarkop chert breccia. They are found in the upper portion of the breccia among, i.a., void-fills. The outer part of the fills consists of norrishite, followed by serandite + albite + feldspar + granular sugilite. The cores of some vugs have armbrusterite and/or fibrous sugilite. There are also unzoned assemblages of similar mineralogy, but with minor kentrolite, strontianite and witherite. Dating of fibrous sugilite yields the age of 620.2 ± 3.3 Ma, thus younger for the Kalahari Manganese Fields assemblages.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


11 valid minerals.

Detailed Mineral List:

Aegirine
Formula: NaFe3+Si2O6
Albite
Formula: Na(AlSi3O8)
Armbrusterite
Formula: K5Na7Mn15[(Si9O22)4](OH)10 · 4H2O
Braunite
Formula: Mn2+Mn3+6(SiO4)O8
'Feldspar Group'
Kentrolite
Formula: Pb2Mn3+2(Si2O7)O2
Norrishite
Formula: KLiMn3+2(Si4O10)O2
Quartz
Formula: SiO2
Serandite
Formula: NaMn2+2Si3O8(OH)
Strontianite
Formula: SrCO3
Sugilite
Formula: K(Na,□)2Li3(Fe,Mn,Al,Zr)2[Si12O30]
Witherite
Formula: BaCO3

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Strontianite5.AB.15SrCO3
Witherite5.AB.15BaCO3
Group 9 - Silicates
Aegirine9.DA.25NaFe3+Si2O6
Albite9.FA.35Na(AlSi3O8)
Armbrusterite9.EG.65K5Na7Mn15[(Si9O22)4](OH)10 · 4H2O
Braunite9.AG.05Mn2+Mn3+6(SiO4)O8
Kentrolite9.BE.80Pb2Mn3+2(Si2O7)O2
Norrishite9.EC.20KLiMn3+2(Si4O10)O2
Serandite9.DG.05NaMn2+2Si3O8(OH)
Sugilite9.CM.05K(Na,□)2Li3(Fe,Mn,Al,Zr)2[Si12O30]
Unclassified Minerals, Rocks, etc.
'Feldspar Group'-

List of minerals arranged by Dana 8th Edition classification

Group 7 - MULTIPLE OXIDES
(AB)2X3
Braunite7.5.1.3Mn2+Mn3+6(SiO4)O8
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Strontianite14.1.3.3SrCO3
Witherite14.1.3.2BaCO3
Group 56 - SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
Si2O7 Groups and O, OH, F, and H2O with cations in [4] and/or >[4] coordination
Kentrolite56.2.10.2Pb2Mn3+2(Si2O7)O2
Group 63 - CYCLOSILICATES Condensed Rings
Condensed Rings (Milarite - Osumilite group)
Sugilite63.2.1a.9K(Na,□)2Li3(Fe,Mn,Al,Zr)2[Si12O30]
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Aegirine65.1.3c.2NaFe3+Si2O6
Single-Width Unbranched Chains, W=1 with chains P=3
Serandite65.2.1.5NaMn2+2Si3O8(OH)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Norrishite71.2.2b.11KLiMn3+2(Si4O10)O2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
Armbrusterite-K5Na7Mn15[(Si9O22)4](OH)10 · 4H2O
'Feldspar Group'-

List of minerals for each chemical element

HHydrogen
H ArmbrusteriteK5Na7Mn15[(Si9O22)4](OH)10 · 4H2O
H SeranditeNaMn22+Si3O8(OH)
LiLithium
Li NorrishiteKLiMn23+(Si4O10)O2
Li SugiliteK(Na,□)2Li3(Fe,Mn,Al,Zr)2[Si12O30]
CCarbon
C StrontianiteSrCO3
C WitheriteBaCO3
OOxygen
O AlbiteNa(AlSi3O8)
O AegirineNaFe3+Si2O6
O ArmbrusteriteK5Na7Mn15[(Si9O22)4](OH)10 · 4H2O
O BrauniteMn2+Mn63+(SiO4)O8
O KentrolitePb2Mn23+(Si2O7)O2
O NorrishiteKLiMn23+(Si4O10)O2
O QuartzSiO2
O SeranditeNaMn22+Si3O8(OH)
O StrontianiteSrCO3
O SugiliteK(Na,□)2Li3(Fe,Mn,Al,Zr)2[Si12O30]
O WitheriteBaCO3
NaSodium
Na AlbiteNa(AlSi3O8)
Na AegirineNaFe3+Si2O6
Na ArmbrusteriteK5Na7Mn15[(Si9O22)4](OH)10 · 4H2O
Na SeranditeNaMn22+Si3O8(OH)
Na SugiliteK(Na,□)2Li3(Fe,Mn,Al,Zr)2[Si12O30]
AlAluminium
Al AlbiteNa(AlSi3O8)
Al SugiliteK(Na,□)2Li3(Fe,Mn,Al,Zr)2[Si12O30]
SiSilicon
Si AlbiteNa(AlSi3O8)
Si AegirineNaFe3+Si2O6
Si ArmbrusteriteK5Na7Mn15[(Si9O22)4](OH)10 · 4H2O
Si BrauniteMn2+Mn63+(SiO4)O8
Si KentrolitePb2Mn23+(Si2O7)O2
Si NorrishiteKLiMn23+(Si4O10)O2
Si QuartzSiO2
Si SeranditeNaMn22+Si3O8(OH)
Si SugiliteK(Na,□)2Li3(Fe,Mn,Al,Zr)2[Si12O30]
KPotassium
K ArmbrusteriteK5Na7Mn15[(Si9O22)4](OH)10 · 4H2O
K NorrishiteKLiMn23+(Si4O10)O2
K SugiliteK(Na,□)2Li3(Fe,Mn,Al,Zr)2[Si12O30]
MnManganese
Mn ArmbrusteriteK5Na7Mn15[(Si9O22)4](OH)10 · 4H2O
Mn BrauniteMn2+Mn63+(SiO4)O8
Mn KentrolitePb2Mn23+(Si2O7)O2
Mn NorrishiteKLiMn23+(Si4O10)O2
Mn SeranditeNaMn22+Si3O8(OH)
Mn SugiliteK(Na,□)2Li3(Fe,Mn,Al,Zr)2[Si12O30]
FeIron
Fe AegirineNaFe3+Si2O6
Fe SugiliteK(Na,□)2Li3(Fe,Mn,Al,Zr)2[Si12O30]
SrStrontium
Sr StrontianiteSrCO3
ZrZirconium
Zr SugiliteK(Na,□)2Li3(Fe,Mn,Al,Zr)2[Si12O30]
BaBarium
Ba WitheriteBaCO3
PbLead
Pb KentrolitePb2Mn23+(Si2O7)O2

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
- John M. Moore, Barbara K. Kuhn, Darren F. Mark, and Harilaos Tsikos (2011): A sugilite-bearing assemblage from the Wolhaarkop breccia, Bruce iron-ore mine, South Africa: Evidence for alkali metasomatism and 40Ar-39Ar dating. European Journal of Mineralogy 23, 661-673.


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