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Amis Complex, Brandberg Complex, Brandberg Area, Dâures, Erongo Region, Namibiai
Regional Level Types
Amis ComplexComplex
Brandberg ComplexComplex
Brandberg AreaMountain Area
DâuresConstituency
Erongo RegionRegion
NamibiaCountry

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Key
07525340015789892588777.jpg
Geologic map of the Brandberg Intrusion, Amis Complex at the southwestern rim

Amis Complex, Brandberg Complex, Brandberg Area, Dâures, Erongo Region, Namibia
02321640014962167043683.jpg
Amis Schlucht on the western slopes of the Brandberg Complex in

Amis Complex, Brandberg Complex, Brandberg Area, Dâures, Erongo Region, Namibia
Latitude & Longitude (WGS84):
21° 11' 52'' South , 14° 28' 47'' East
Latitude & Longitude (decimal):
Area:
1.0 km2
Locality type:
Köppen climate type:


A late intrusive phase associated with the Brandberg anorogenic granite intrusion. Early Cretaceous fenitized peralkaline arfvedsonite-aegirine granite and associated agpaitic pegmatites. Located in the SW periphery of the Brandberg Complex.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


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

Detailed Mineral List:

Aegirine
Formula: NaFe3+Si2O6
Reference: Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.
Arfvedsonite
Formula: [Na][Na2][Fe2+4Fe3+]Si8O22(OH)2
Reference: Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.
Astrophyllite
Formula: K2NaFe2+7Ti2Si8O26(OH)4F
Reference: Economic Geology, Vol. 97, 2002, pp. 399–413
'Bastnäsite'
Reference: Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.
Cassiterite
Formula: SnO2
Reference: Von Bezing, L., Bode, R., and Jahn, S., (2008) Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern, 621 pp (in English).
Dalyite
Formula: K2ZrSi6O15
Reference: Economic Geology, Vol. 97, 2002, pp. 399–413
'Fergusonite'
Reference: Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.
Fluorite
Formula: CaF2
Reference: Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.
Fluorite var: Yttrofluorite
Formula: (Ca1-xYx)F2+x where 0.05< x <0.3
Reference: Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.
'Fluorkenopyrochlore' (FRL)
Formula: (□,Sr,Ce,Ca,Na)2(Nb,Ti)2O6F
Type Locality:
Reference: Atencio, D., Andrade, M.B., Christy, A.G., Gieré, R., Kartashov, P.M. (2010): The pyrochlore supergroup of minerals: nomenclature. Canadian Mineralogist, 48, 673-698.; Schmitt A.K., Trumbull R.B., Dulski P., Emmermann R. (2002) Zr-Nb-REE mineralization in peralkaline granites from the Amis Complex, Brandberg (Namibia): evidence for magmatic pre-enrichment from melt inclusions, - Economic geology, v.97, pp. 399-413.
'Gadolinite'
Reference: Economic Geology, Vol. 97, 2002, pp. 399–413
'Monazite'
Reference: Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.
Monazite-(Ce)
Formula: Ce(PO4)
Reference: Bezing, L. von, Bode, R. & Jahn, S. (2008): Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern: 656 (in English)
'Pyrochlore Group'
Formula: A2Nb2(O,OH)6Z
Reference: Economic Geology, Vol. 97, 2002, pp. 399–413
Rutile
Formula: TiO2
Reference: Economic Geology, Vol. 97, 2002, pp. 399–413
Thorite
Formula: Th(SiO4)
Reference: Economic Geology, Vol. 97, 2002, pp. 399–413
Wulfenite
Formula: Pb(MoO4)
Reference: Economic Geology, Vol. 97, 2002, pp. 399–413
Xenotime-(Y)
Formula: Y(PO4)
Reference: Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.
Zircon
Formula: Zr(SiO4)
Reference: Economic Geology, Vol. 97, 2002, pp. 399–413

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
Fluorite3.AB.25CaF2
var: Yttrofluorite3.AB.25(Ca1-xYx)F2+x where 0.05< x <0.3
Group 4 - Oxides and Hydroxides
Cassiterite4.DB.05SnO2
'Pyrochlore Group'4.00.A2Nb2(O,OH)6Z
Rutile4.DB.05TiO2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Wulfenite7.GA.05Pb(MoO4)
Group 8 - Phosphates, Arsenates and Vanadates
Monazite-(Ce)8.AD.50Ce(PO4)
Xenotime-(Y)8.AD.35Y(PO4)
Group 9 - Silicates
Aegirine9.DA.25NaFe3+Si2O6
Arfvedsonite9.DE.25[Na][Na2][Fe2+4Fe3+]Si8O22(OH)2
Astrophyllite9.DC.05K2NaFe2+7Ti2Si8O26(OH)4F
Dalyite9.EA.25K2ZrSi6O15
Thorite9.AD.30Th(SiO4)
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Bastnäsite'-
'Fergusonite'-
'Fluorkenopyrochlore' (TL)-(□,Sr,Ce,Ca,Na)2(Nb,Ti)2O6F
'Gadolinite'-
'Monazite'-

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
AX2
Cassiterite4.4.1.5SnO2
Rutile4.4.1.1TiO2
Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
A2B2O6(O,OH,F)
'Pyrochlore Group'8.2.1.1A2Nb2(O,OH)6Z
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
AXO4
Monazite-(Ce)38.4.3.1Ce(PO4)
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Wulfenite48.1.3.1Pb(MoO4)
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in >[6] coordination
Thorite51.5.2.3Th(SiO4)
Zircon51.5.2.1Zr(SiO4)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Aegirine65.1.3c.2NaFe3+Si2O6
Group 69 - INOSILICATES Chains with Side Branches or Loops
Chains with Side Branches or Loops with (P=2, and N=4, 2 branches)
Astrophyllite69.1.1.1K2NaFe2+7Ti2Si8O26(OH)4F
Group 72 - PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 4-, 6-, and 8-membered rings
Dalyite72.2.1.1K2ZrSi6O15
Unclassified Minerals, Mixtures, etc.
Arfvedsonite-[Na][Na2][Fe2+4Fe3+]Si8O22(OH)2
'Bastnäsite'-
'Fergusonite'-
Fluorite
var: Yttrofluorite
-(Ca1-xYx)F2+x where 0.05< x <0.3
'Fluorkenopyrochlore' (FRL)-(□,Sr,Ce,Ca,Na)2(Nb,Ti)2O6F
'Gadolinite'-
'Monazite'-
Xenotime-(Y)-Y(PO4)

List of minerals for each chemical element

HHydrogen
H Arfvedsonite[Na][Na2][Fe42+Fe3+]Si8O22(OH)2
H Pyrochlore GroupA2Nb2(O,OH)6Z
H AstrophylliteK2NaFe72+Ti2Si8O26(OH)4F
OOxygen
O Fluorkenopyrochlore(□,Sr,Ce,Ca,Na)2(Nb,Ti)2O6F
O Arfvedsonite[Na][Na2][Fe42+Fe3+]Si8O22(OH)2
O ZirconZr(SiO4)
O ThoriteTh(SiO4)
O Pyrochlore GroupA2Nb2(O,OH)6Z
O DalyiteK2ZrSi6O15
O AstrophylliteK2NaFe72+Ti2Si8O26(OH)4F
O RutileTiO2
O WulfenitePb(MoO4)
O Xenotime-(Y)Y(PO4)
O AegirineNaFe3+Si2O6
O Monazite-(Ce)Ce(PO4)
O CassiteriteSnO2
FFluorine
F Fluorkenopyrochlore(□,Sr,Ce,Ca,Na)2(Nb,Ti)2O6F
F AstrophylliteK2NaFe72+Ti2Si8O26(OH)4F
F Fluorite (var: Yttrofluorite)(Ca1-xYx)F2+x where 0.05< x <0.3
F FluoriteCaF2
NaSodium
Na Fluorkenopyrochlore(□,Sr,Ce,Ca,Na)2(Nb,Ti)2O6F
Na Arfvedsonite[Na][Na2][Fe42+Fe3+]Si8O22(OH)2
Na AstrophylliteK2NaFe72+Ti2Si8O26(OH)4F
Na AegirineNaFe3+Si2O6
SiSilicon
Si Arfvedsonite[Na][Na2][Fe42+Fe3+]Si8O22(OH)2
Si ZirconZr(SiO4)
Si ThoriteTh(SiO4)
Si DalyiteK2ZrSi6O15
Si AstrophylliteK2NaFe72+Ti2Si8O26(OH)4F
Si AegirineNaFe3+Si2O6
PPhosphorus
P Xenotime-(Y)Y(PO4)
P Monazite-(Ce)Ce(PO4)
KPotassium
K DalyiteK2ZrSi6O15
K AstrophylliteK2NaFe72+Ti2Si8O26(OH)4F
CaCalcium
Ca Fluorkenopyrochlore(□,Sr,Ce,Ca,Na)2(Nb,Ti)2O6F
Ca Fluorite (var: Yttrofluorite)(Ca1-xYx)F2+x where 0.05< x <0.3
Ca FluoriteCaF2
TiTitanium
Ti Fluorkenopyrochlore(□,Sr,Ce,Ca,Na)2(Nb,Ti)2O6F
Ti AstrophylliteK2NaFe72+Ti2Si8O26(OH)4F
Ti RutileTiO2
FeIron
Fe Arfvedsonite[Na][Na2][Fe42+Fe3+]Si8O22(OH)2
Fe AstrophylliteK2NaFe72+Ti2Si8O26(OH)4F
Fe AegirineNaFe3+Si2O6
SrStrontium
Sr Fluorkenopyrochlore(□,Sr,Ce,Ca,Na)2(Nb,Ti)2O6F
YYttrium
Y Fluorite (var: Yttrofluorite)(Ca1-xYx)F2+x where 0.05< x <0.3
Y Xenotime-(Y)Y(PO4)
ZrZirconium
Zr ZirconZr(SiO4)
Zr DalyiteK2ZrSi6O15
NbNiobium
Nb Fluorkenopyrochlore(□,Sr,Ce,Ca,Na)2(Nb,Ti)2O6F
Nb Pyrochlore GroupA2Nb2(O,OH)6Z
MoMolybdenum
Mo WulfenitePb(MoO4)
SnTin
Sn CassiteriteSnO2
CeCerium
Ce Fluorkenopyrochlore(□,Sr,Ce,Ca,Na)2(Nb,Ti)2O6F
Ce Monazite-(Ce)Ce(PO4)
PbLead
Pb WulfenitePb(MoO4)
ThThorium
Th ThoriteTh(SiO4)

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Orris, G.J., and Grauch, R.I. (2002): Rare earth element mines, deposits, and occurrences. USGS Open-File Report 02-189.
Schmitt A.K., Trumbull R.B., Dulski P., Emmermann R. (2002) Zr-Nb-REE mineralization in peralkaline granites from the Amis Complex, Brandberg (Namibia): evidence for magmatic pre-enrichment from melt inclusions, - Economic geology, v. 97, pp. 399-413.
Von Bezing, L., Bode, R., and Jahn, S., (2008) Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern, (in English).
Diehl, M. (1990): Geology, mineralogy, geochemistry, and hydrothermal alteration of the Brandberg Alkaline Complex, Namibia (Memoir 10 / Ministry of Mines and Energy, Geological Survey of Namibia). Diss. Rer. Nat., 1990, Johannes Gutenberg University, Mainz/Germany.

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