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Mumba cassiterite gravels, Mumba, Masisi Territory, North Kivu, DR Congoi
Regional Level Types
Mumba cassiterite gravelsAlluvials
Mumba- not defined -
Masisi TerritoryTerritory
North KivuProvince
DR CongoCountry

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Key
Latitude & Longitude (WGS84):
1° 27' 21'' South , 28° 53' 3'' East
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Sake17,151 (2012)22.0km
Goma144,124 (2012)45.3km
Gisenyi83,623 (2010)49.6km
Other/historical names associated with this locality:
Zaïre


The Mumba district occurs in a NE-SW synclinorium with granitic massifs on each side. The micaschists on the edges of the granites are topped by a schisto-quartzitic formation. The whole set is affected by the Kibaran (Mesoproterozoic) orogeny.

GPS coordinates are currently set for the town of Mumba.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


4 valid minerals. 1 (TL) - type locality of valid minerals. 1 (FRL) - first recorded locality of unapproved mineral/variety/etc.

Detailed Mineral List:

Cassiterite
Formula: SnO2
Reference: Safiannikoff, A. and van Wambeke, L. (1961): Sur un terme plombifere du groupe pyrochlore-microlite. Bulletin de la Société Francaise de Minéralogie et de Cristallographie 84: 382-384.
'Microlite Group'
Formula: A2-mTa2X6-wZ-n
'Plumbomicrolite (of Hogarth 1977)' (FRL)
Type Locality:
Reference: Safiannikoff, A. and van Wambeke, L. (1961): Sur un terme plombifère du groupe pyrochlore-microlite. Bulletin de la Société Francaise de Minéralogie et de Cristallographie: 84: 382-384
Rankamaite (TL)
Formula: (Na,K)3(Ta,Nb,Al)11(O,OH)31
Type Locality:
Reference: Safiannikoff, A. and van Wambeke, L. (1961): Sur un terme plombifere du groupe pyrochlore-microlite. Bulletin de la Société Francaise de Minéralogie et de Cristallographie 84: 382-384
Simpsonite
Formula: Al4(Ta,Nb)3O13(OH,F)
Reference: Safiannikoff, A. and van Wambeke, L. (1961): Sur un terme plombifere du groupe pyrochlore-microlite. Bulletin de la Société Francaise de Minéralogie et de Cristallographie 84: 382-384.
Tantalite-(Mn)
Formula: Mn2+Ta2O6
Reference: Roy Kristiansen specimen

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Cassiterite4.DB.05SnO2
'Microlite Group'4.00.A2-mTa2X6-wZ-n
'Plumbomicrolite (of Hogarth 1977)' (TL)4.DH.15
Rankamaite (TL)4.DM.05(Na,K)3(Ta,Nb,Al)11(O,OH)31
Simpsonite4.DC.10Al4(Ta,Nb)3O13(OH,F)
Tantalite-(Mn)4.DB.35Mn2+Ta2O6

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
AX2
Cassiterite4.4.1.5SnO2
Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
A2B2O6(O,OH,F)
'Microlite Group'8.2.2.1A2-mTa2X6-wZ-n
'Plumbomicrolite (of Hogarth 1977)' (FRL)8.2.2.3
AB2O6
Tantalite-(Mn)8.3.2.3Mn2+Ta2O6
Miscellaneous
Rankamaite (TL)8.7.6.1(Na,K)3(Ta,Nb,Al)11(O,OH)31
Simpsonite8.7.5.1Al4(Ta,Nb)3O13(OH,F)

List of minerals for each chemical element

HHydrogen
H Rankamaite(Na,K)3(Ta,Nb,Al)11(O,OH)31
H SimpsoniteAl4(Ta,Nb)3O13(OH,F)
OOxygen
O Rankamaite(Na,K)3(Ta,Nb,Al)11(O,OH)31
O CassiteriteSnO2
O SimpsoniteAl4(Ta,Nb)3O13(OH,F)
O Tantalite-(Mn)Mn2+Ta2O6
NaSodium
Na Rankamaite(Na,K)3(Ta,Nb,Al)11(O,OH)31
AlAluminium
Al Rankamaite(Na,K)3(Ta,Nb,Al)11(O,OH)31
Al SimpsoniteAl4(Ta,Nb)3O13(OH,F)
KPotassium
K Rankamaite(Na,K)3(Ta,Nb,Al)11(O,OH)31
MnManganese
Mn Tantalite-(Mn)Mn2+Ta2O6
NbNiobium
Nb Rankamaite(Na,K)3(Ta,Nb,Al)11(O,OH)31
SnTin
Sn CassiteriteSnO2
TaTantalum
Ta Rankamaite(Na,K)3(Ta,Nb,Al)11(O,OH)31
Ta SimpsoniteAl4(Ta,Nb)3O13(OH,F)
Ta Tantalite-(Mn)Mn2+Ta2O6
Ta Microlite GroupA2-mTa2X6-wZ-n
PbLead
Pb Rankamaite(Na,K)3(Ta,Nb,Al)11(O,OH)31

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Safiannikoff, A. and van Wambeke, L. (1961) Sur un terme plombifere du groupe pyrochlore-microlite. Bulletin de la Société Francaise de Minéralogie et de Cristallographie, 84, 382-384.
Kristiansen, R. (2001) Sjeldne tantalniobater fra Sentral-Afrika. eksotiske minerallokaliteter II (Exotic mineral-locations II). STEIN, 28(2), 21-28 [notes on rankamaite and plumbomicrolite].

External Links


Other Regions, Features and Areas containg this locality

Africa
African PlateTectonic Plate
DR Congo

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